Google said no. The 0.9.44 release would be based off this commit instead as it's has the current minimum target sdk.

Revision: 034402ca4ed4243122bd88857c7d306e295c9fbe
  Parent:   9f9a905cf75324471b3a8eb41da2feebf620207c
  Author:   meeh@mail.i2p
  Date:     10/27/2019 15:00:33
  Branch:   i2p.android.base
  Changelog:
  Merged two heads

.tx/config

@@ -4,15 +4,15 @@ lang_map = he: iw, id: in, pt_BR: pt-rBR, ru_RU: ru, sv_SE: sv, tr_TR: tr, uk_UA
 
 [I2P.android]
 file_filter = app/src/main/res/values-<lang>/strings.xml
+minimum_perc = 22
 source_file = app/src/main/res/values/strings.xml
 source_lang = en
 type = ANDROID
-minimum_perc = 50
 
 [I2P.android_lib_helper]
 file_filter = lib/helper/src/main/res/values-<lang>/strings.xml
+minimum_perc = 50
 source_file = lib/helper/src/main/res/values/strings.xml
 source_lang = en
 type = ANDROID
-minimum_perc = 50
 

CHANGELOG

@@ -1,4 +1,103 @@
-0.9.27 / 2016-11-20
+0.9.44 / 2019-12-03
+ * Updated translations
+ * Bumped target sdk version to 28, enforced by google
+
+0.9.43-1 / 2019-10-28
+ * Fix crash at startup in TCG
+
+0.9.43 / 2019-10-27
+ * Save state in background thread (tickets #2595, #2632)
+ * Fix ISE in language dialog (ticket #2631)
+ * Fix NPE in create tunnel (ticket #2629)
+ * Update logo after router killed in background
+ * Fix message in tunnels tabs when tunnels not up yet
+ * Hide tunnel actions while TCG is starting
+ * Add battery permissions dialog (ticket #2607)
+
+0.9.42 / 2019-08-28
+ * Possible fix for tunnel edit dialog crash (ticket #2598)
+
+0.9.41 / 2019-07-03
+ * New 64 bit libjbigi (ticket #2503)
+ * Update 32 bit jbigi to GMP 6.1.2
+ * Fix for client tunnels not starting after reseed
+ * UPnP Fixes (ticket #2499)
+ * WebView crash fixes (ticket #2390)
+ * i2ptunnel crash fix (ticket #2552)
+ * i2ptunnel ANR fix (ticket #2491)
+ * Browser help pages improvements (tickets #2521, 2523)
+ * Code cleanups and fixes
+ * Update visibility of floating menu items
+ * Put our router info at top of list
+ * Table layout cleanups
+ * Fixes for threads remaining after router stop
+ * Remove BOB
+ * Remove welterde IRC tunnel
+ * Various lint fixes
+ * New translations: Add cs, da, el
+ * Add missing translations to menu: ar, fi, gl, hu, zh_TW
+
+0.9.40 / 2019-05-10
+ * Open local I2CP socket for 3rd party apps
+ * Fix News URLs
+ * Numerous bug fixes (see trac)
+
+0.9.39 / 2019-03-23
+ * Set App ID
+
+0.9.38 / 2019-01-27
+
+0.9.37 / 2018-10-10
+
+0.9.36 / 2018-08-27
+
+0.9.35 / 2018-07-03
+
+0.9.34 / 2018-04-25
+
+0.9.33 / 2018-02-18
+ * Translation updates
+
+0.9.32 / 2017-11-28
+ * Fixed "Application Not Responding" error when restarting all tunnels
+ * Fixed crashes when:
+   * opening the console menu
+   * starting the router
+   * starting the router for the first time
+   * viewing tunnels
+   * viewing the addressbook
+   * opening the addressbook menu
+   * configuring addressbook subscriptions
+   * using a configuration wizard
+   * loading a B64 Destination from file
+   * viewing tunnel settings
+   * saving tunnel settings
+   * installing a tunnel's recommended app without a market app
+   * installing a browser without a market app
+   * rotating the screen while using the built-in browser
+ * Added a "sync" icon to more clearly indicate tunnel "starting" status
+ * Updated Firefox browser config instructions for Firefox Quantum
+ * Translation updates
+
+0.9.31 / 2017-08-19
+ * Fixed various crashes in the Tunnels UI
+ * Updated Firefox browser config instructions
+ * Minor bug fixes
+ * Dependency and translation updates
+
+0.9.30 / 2017-05-20
+ * Fixed crashes when creating or deleting tunnels, or adding names to the
+   private addressbook
+ * Minor bug fixes
+ * Dependency and translation updates
+
+0.9.29 / 2017-03-27
+ * Dependency and translation updates
+
+0.9.28 / 2017-01-02
+ * Bug fixes and translation updates
+
+0.9.27 / 2016-11-20 / 64ff68efe98c345acb6ba1d0432fa49d1d650358
  * Removed kytv's IRC server from default tunnel list
  * Translation updates
 

DEVELOPMENT-README.md

@@ -0,0 +1,11 @@
+# Development Readme
+
+## How to build development builds of the router core for android?
+
+Check the RELEASE-PROCESS.md file for general information about how to build and to bump the version.
+
+In your i2p.i2p codebase checkout, execute `./installer/resources/maven-dev-release.sh` with your build number as first argument.
+The script locates itself and uses the same codebase as it's in, to produce the maven builds which will be locally installed.
+
+Next, add the build number to the gradle.properties and build the android build as usual.
+

README.md

@@ -7,8 +7,8 @@
 - Java SDK (preferably Oracle/Sun or OpenJDK) 1.6.0 or higher
 - Apache Ant 1.8.0 or higher
 - I2P source
-- Android SDK for API 21
-- Android Build Tools 21.1.2
+- Android SDK for API 28 or higher
+- Android Build Tools 28.0.0 or higher
 - Android Support Repository
 - Gradle 2.2.1
 
@@ -67,10 +67,18 @@ systemProp.socksProxyPort=9150
     ```
     sdk.dir=/path/to/android-studio/sdk
     ```
+1a. For building with a local router development build:
+    cd ../i2p.i2p
+    installer/resources/maven-dev-release.sh x // x is the build number, e.g. 6
+    cd back here
+    edit gradle.properties, add the build number x to I2P_PROPERTIES=0.9.xx-x
 
 2. `gradle assembleDebug`
 
-3. The APK will be placed in `i2p.android.base/app/build/outputs/apk`.
+3. The APK files will be placed in `i2p.android.base/app/build/outputs/apk` subdirectories.
+
+4. Install debug build on phone in USB debugging mode
+    adb install app/build/outputs/apk/free/debug/app-free-debug.apk 
 
 ### Building with Android Studio
 

RELEASE-PROCESS.md

@@ -0,0 +1,59 @@
+# Release Process
+
+## Prerequirements
+
+1. Ensure you got the deprecated maven ant tasks. ( https://maven.apache.org/ant-tasks/download.cgi )
+2. It should exist at `~/.ant/lib/maven-ant-tasks-2.1.3.jar`
+3. Ensure you got hamcrest-integration, hamcrest-library, hamcrest-core in the hamcrest.home directory.
+4. Ensure junit 4.12 at least in junit.home, ensure the jar file is named `junit4.jar`.
+5. Ensure to have updated the changelog with the changes done.
+
+## Maven Central
+
+1. Check out a clean copy of i2p.i2p at the correct release version. (Make a clean checkout)
+2. Build the maven packages via `ant mavenCentral` where you end up with mavencentral-*.jar files in the current directory.
+3. Login to http://oss.sonatype.org for uploading the mavencentral-*.jar bundles.
+4. In nexus, choose "Staging Upload" and upload all of the bundles with upload mode set to "Artifact Bundle"
+5. Under "Staging Repositories" ensure all where uploaded correctly, select them all and press "Release" in the toolbar.
+
+## Android Common Build
+
+1. Edit `routerjars/local.properties` to use the clean i2p.i2p copy.
+2. Pull the latest translations with `tx pull -a` and commit them. (If you don't have the `tx` command, do `pip install transifex-client` )
+2a. If there are any new translations, `mtn add` them, and add them to `app/src/main/res/values/arrays.xml` (two places, alphabetical order please)
+3. Ensure that `signing.properties` contains the details of the release key.
+4. Edit `gradle.properties` to bump the I2P version.
+5. Edit `app/build.gradle` to bump the Android version number.
+6. Edit `CHANGELOG` to add the release and date.
+7. If the helper has changed since the last release, edit
+   `lib/helper/gradle.properties` to bump the version.
+8. `./gradlew clean assembleRelease`
+
+### Libraries
+
+1. `./gradlew :lib:client:uploadArchives`
+2. If the helper version was changed and should be released: `./gradlew :lib:helper:uploadArchives`
+3. Check on Sonatype that everything worked, and close/release.
+
+## F-Droid Guide
+
+1. Ensure you have the release keys, the keyfile must be placed at `~/.local/share/fdroidserver/keystore.jks`
+2. If it's the first time, or you have reinstalled anything, ensure `path/to/fdroid/config.py` has correct information.
+3. Assuming you already have ran `./gradlew clean assembleRelease` from a earlier step, continue.
+4. `cp app/build/outputs/apk/free/release/app-free-release.apk path/to/fdroid/repo/I2P-VERSION.apk`
+5. Update `path/to/fdroid/metadata/net.i2p.android.txt` (The versions at the bottom of the file)
+6. Run `fdroid update` from inside the fdroid path (install fdroid command via `pip install fdroidserver`)
+7. Zip/tar the local fdroid repo and archive. `rm fdroid.tgz && tar czf fdroid.tgz archive/ repo/` from the fdroid directory.
+8. Push to download server and put in place. (via SSH for example, `scp fdroid.tgz download.i2p2.de:~/`)
+9. On the server run `bin-fd/update-fdroid` and `sudo bin-fd/update-app i2p 0.9.40` (This ensures we use the exact same apk file for the download page as in fdroid and gplay)
+10. Check F-Droid repo works, and app works.
+
+## Google Play and finishing up
+
+1. Verify which files that are changed via `mtn ls cha`. It shouldn't be much more than those bellow this line and possible translations (`mtn ls unk`).
+2. Commit your release changes, `mtn ci gradle.properties lib/helper/gradle.properties app/build.gradle`
+3. Push free and donate builds to Google Play via https://play.google.com/apps/publish/
+4. Tag the new release. Example `mtn tag h: android-0.9.36`
+5. Push the monotone changes
+6. Update download page (version and hash, including F-Droid)
+

TODO

@@ -19,38 +19,61 @@
   - Style for addressbook headers
   - Change console FAM icon when possible
     <zzz> on the bottom right, the + and x icons might be better as a double-up arrow and double-down arrow?
+  - Use Material design for LongPressButton
+  - Highlight selected tunnel in two-pane mode
 
 # Short-term
 
+- Remove peers page (HTML version)
+- Add firewall help page showing current port settings
+- GMP 6
+- Fetch all JARs from Maven Central (ie. upload everything that I2P Android uses)
 - Disable uPnP when on cell networks
     <zzz> spewing UPnP out into cell networks is a waste of time at best and a security risk at worst, but you really want it for wifi
+- Rewrite settings config handling
+- Rewrite InitActivities
 - I2PTunnel
   - Improve tunnel list status indicators
+  - Icon overlay to indicate which tunnels are shared
+    - Or reorder / group tunnels?
   - Show all messages somewhere
+    - Bottom toolbar?
   - Icons/header images for tunnel types on details page
+  - Setting to close when not on WiFi
 - Progress feedback for addressbook subscriptions reload
 - Display release notes directly on new router version
 - Fill out help pages
+- Fix navigation to specific settings pages
 - Rewrite release notes to be release-specific
 - Fix release notes UI, either make back button use clear or add buttons
+- Notify user when autostart fails?
 - NetDB tablet view fixes
   - Refresh detail fragment when changing tab
   - Move list to correct item when changing tab
   - Create nav history when viewing RI from LS
+- Handle NetDB null cases (failed lookup of requested hash in detail page)
 - Include GeoIP db for country info
 - Maybe change router-off mechanic for various pages? Enable as they become available?
 
 # Medium-term
 
+- SQLite naming service backend to store addresses more effectively
+  - Leverage for name completion in e.g. browsers
+- Create/edit tunnels while router is not running
+- Separate out shared tunnel config
+  - Convey to users that one config controls all shared tunnels
 - Network profiles
   - User selects profile in settings
   - Change network participation etc. based on profile
   - Also look at connection type: Connectivity.isConnectionFast()
 - Expose log level overrides
+- Bug report feature
+- Replace peers page (native version)
 - Improve graphs
   - Show fixed x range, not only available data
   - Think about pan/zoom
   - How to persist data across restarts?
+- Enable apps to specify when they don't need the router anymore
 
 # Silent Store approval checks to confirm/implement
 
@@ -98,6 +121,8 @@
 
 # Long-term
 
+- Reproducible builds
+- Extract RouterService into a library
 - Remote router support
   - Implement a "router wrapper" that can represent a local or remote router
   - Implement/use client APIs to talk to remote router

app/build.gradle

@@ -1,13 +1,15 @@
 apply plugin: 'com.android.application'
-apply plugin: 'witness'
+repositories {
+    mavenLocal()
+    mavenCentral()
+}
 
 android {
-    compileSdkVersion Integer.parseInt(project.ANDROID_BUILD_SDK_VERSION as String)
-    buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION as String
+    compileSdkVersion 28
     defaultConfig {
-        versionCode 4745234
-        versionName '0.9.27'
-        minSdkVersion 9
+        versionCode 4745253
+        versionName "$I2P_VERSION"
+        minSdkVersion 14
         targetSdkVersion Integer.parseInt(project.ANDROID_BUILD_TARGET_SDK_VERSION as String)
 
         // For Espresso
@@ -23,6 +25,7 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
         debug {
+            debuggable true
             applicationIdSuffix '.debug'
             versionNameSuffix '-DEBUG'
         }
@@ -33,69 +36,59 @@ android {
     }
     lintOptions {
         abortOnError false
+        disable 'MissingDefaultResource'
     }
     packagingOptions {
         exclude 'LICENSE.txt'
     }
+    flavorDimensions 'tier'
     productFlavors {
         free {
+            dimension 'tier'
             applicationId 'net.i2p.android'
         }
         donate {
+            dimension 'tier'
             applicationId 'net.i2p.android.donate'
         }
         legacy {
+            dimension 'tier'
             applicationId 'net.i2p.android.router'
         }
     }
+    buildToolsVersion '28.0.3'
 }
 
 dependencies {
     // Local dependencies
-    compile project(':lib:client')
-    compile project(':lib:helper')
-    compile project(':routerjars')
-
+    implementation project(':lib:client')
+    implementation project(':lib:helper')
+    implementation project(path: ':routerjars', configuration: 'routerjars')
     // Android Support Repository dependencies
-    def supportVersion = '25.0.0'
-    compile "com.android.support:support-v4:$supportVersion"
-    compile "com.android.support:appcompat-v7:$supportVersion"
-    compile "com.android.support:preference-v7:$supportVersion"
-    compile "com.android.support:preference-v14:$supportVersion"
-    compile "com.android.support:recyclerview-v7:$supportVersion"
-
+    def supportVersion = '28.0.0'
+    implementation "com.android.support:support-v4:$supportVersion"
+    implementation "com.android.support:appcompat-v7:$supportVersion"
+    implementation "com.android.support:preference-v7:$supportVersion"
+    implementation "com.android.support:preference-v14:$supportVersion"
+    implementation "com.android.support:recyclerview-v7:$supportVersion"
     // Remote dependencies
-    compile 'com.androidplot:androidplot-core:0.9.8'
-    compile 'com.eowise:recyclerview-stickyheaders:0.5.2@aar'
-    compile ('com.mcxiaoke.viewpagerindicator:library:2.4.1') {
-        exclude group: 'com.android.support', module: 'support-v4'
-    }
-    compile 'com.pnikosis:materialish-progress:1.7'
-    compile 'net.i2p:router:0.9.27'
-    compile 'net.i2p.android.ext:floatingactionbutton:1.10.1'
-    compile 'org.sufficientlysecure:html-textview:1.6'
-
+    implementation 'com.androidplot:androidplot-core:1.4.1'
+    implementation 'com.eowise:recyclerview-stickyheaders:0.5.2@aar'
+    implementation 'com.inkapplications.viewpageindicator:library:2.4.4'
+    implementation 'com.pnikosis:materialish-progress:1.7'
+    implementation "net.i2p:router:$I2P_VERSION"
+    implementation "net.i2p:i2p:$I2P_VERSION"
+    implementation "net.i2p.client:mstreaming:$I2P_VERSION"
+    implementation "net.i2p.client:streaming:$I2P_VERSION"
+    implementation 'net.i2p.android.ext:floatingactionbutton:1.10.1'
+    implementation 'org.sufficientlysecure:html-textview:3.1'
     // Testing-only dependencies
-    androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2'
+    androidTestImplementation('com.android.support.test.espresso:espresso-core:3.0.2') {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    }
 }
 
-dependencyVerification {
-    verify = [
-            'com.android.support:support-v4:c25c657954152c4315584572f5008a6780b086169519f67acd20c2617b9da325',
-            'com.android.support:appcompat-v7:bc0b13b1ba63ed226ae509044c880fdfe225cb86d21924ef19f2fb97a71c877e',
-            'com.android.support:preference-v7:a3ebe066ad04787dd377562abb391255b89d056f8dc450365a504f14d74c825c',
-            'com.android.support:preference-v14:6a374214736eff84637b847ba0015d43c52edef6d320b9f6920ead580c8dbe05',
-            'com.android.support:recyclerview-v7:fc6d6a9b802ed3a26789812f29167135cac7b4d956f4deda54fc1f317721da64',
-            'com.androidplot:androidplot-core:e44d9e59e06f025330831f7d3c987d2778a3302025184cf0cef05714b5171212',
-            'com.eowise:recyclerview-stickyheaders:7b236da49b33b840e9ba6e7e4182218d1a2d9047236fdbc3ca947352f9b0883b',
-            'com.mcxiaoke.viewpagerindicator:library:1e8aad664137f68abdfee94889f6da3dc98be652a235176a403965a07a25de62',
-            'com.pnikosis:materialish-progress:da089a90d1dab61e9b50038c09081019398f81190d12b0b567ce94b83ef8cf93',
-            'net.i2p.android.ext:floatingactionbutton:09d43e2d4ac04a91bf7a37e1ec48a8d220204e3a55dca72cd36cd9fa27461ade',
-            'org.sufficientlysecure:html-textview:c409b471618b675e3d2a8588f883c5fe8f3369d00df61ec84b29f29c648370ae',
-    ]
-}
-
-project.ext.i2pbase = '../i2p.i2p'
+project.ext.i2pbase = "../i2p.i2p"
 def Properties props = new Properties()
 def propFile = new File(project(':routerjars').projectDir, 'local.properties')
 

app/proguard-rules.pro

@@ -6,6 +6,10 @@
 #   http://developer.android.com/guide/developing/tools/proguard.html
 
 # Add any project specific keep options here:
+-dontobfuscate
+-dontoptimize
+-dontpreverify
+-dontshrink
 
 # If your project uses WebView with JS, uncomment the following
 # and specify the fully qualified class name to the JavaScript interface
@@ -21,8 +25,5 @@
 # https://code.google.com/p/android/issues/detail?id=78377#c302
 -keepattributes **
 -keep class !android.support.v7.view.menu.**,** {*;}
--dontpreverify
--dontoptimize
--dontshrink
 -dontwarn **
--dontnote **
+-dontnote **

app/src/main/AndroidManifest.xml

@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="net.i2p.android.router"
-    android:installLocation="auto">
+    android:installLocation="auto"
+    android:sharedUserId="net.i2p">
 
     <uses-sdk xmlns:tools="http://schemas.android.com/tools"
         tools:overrideLibrary="android.support.v14.preference" />
@@ -9,6 +10,15 @@
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <!-- following two are for UPnP -->
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE" />
+    <!-- required for reliable core functionality on Android, see:
+    https://geti2p.net/en/docs/applications/embedding
+    heading: "Design for and Encourage Long Uptimes"
+    -->
+    <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
 
     <application
         android:icon="@drawable/ic_launcher_itoopie"

app/src/main/java/android/support/v4/view/CustomViewPager.java

@@ -31,6 +31,13 @@ public class CustomViewPager extends ViewPager {
 
     @Override
     public boolean onInterceptTouchEvent(MotionEvent event) {
+        // See Nov. 20, 2013 comment at:
+        // https://github.com/JakeWharton/ViewPagerIndicator/pull/257
+        // Our ticket #2488
+
+        // prevent NPE if fake dragging and touching ViewPager
+        if(isFakeDragging()) return false;
+
         return mEnabled && mFixedPage < 0 && super.onInterceptTouchEvent(event);
     }
 

app/src/main/java/com/pavelsikun/seekbarpreference/MaterialSeekBarController.java

@@ -125,7 +125,8 @@ public class MaterialSeekBarController implements SeekBar.OnSeekBarChangeListene
     }
 
     private void setPaddedValue(int value) {
-        mSeekBarValue.setText(String.format("%0" + mMaxDigits +"d", value));
+        //mSeekBarValue.setText(String.format("%0" + mMaxDigits +"d", value));
+        mSeekBarValue.setText(String.format("%" + mMaxDigits +"d", value));
     }
 
 

app/src/main/java/net/i2p/android/apps/EepGetFetcher.java

@@ -5,6 +5,8 @@ import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
+import java.util.Locale;
+
 import net.i2p.I2PAppContext;
 import net.i2p.data.DataHelper;
 import net.i2p.util.EepGet;
@@ -83,7 +85,7 @@ public class EepGetFetcher implements EepGet.StatusListener {
         int semi = rv.indexOf(";");
         if (semi > 0)
             rv = rv.substring(0, semi);
-        return rv.toLowerCase();
+        return rv.toLowerCase(Locale.US);
     }
 
     /**

app/src/main/java/net/i2p/android/apps/NewsFetcher.java

@@ -5,18 +5,23 @@ import android.content.Context;
 import net.i2p.android.router.NewsActivity;
 import net.i2p.android.router.R;
 import net.i2p.android.router.util.Notifications;
+import net.i2p.app.ClientApp;
+import net.i2p.app.ClientAppManager;
+import net.i2p.app.ClientAppState;
+import static net.i2p.app.ClientAppState.*;
 import net.i2p.crypto.SU3File;
 import net.i2p.data.DataHelper;
 import net.i2p.router.RouterContext;
 import net.i2p.router.news.NewsEntry;
 import net.i2p.router.news.NewsMetadata;
 import net.i2p.router.news.NewsXMLParser;
-import net.i2p.router.util.RFC822Date;
 import net.i2p.util.EepGet;
 import net.i2p.util.FileUtil;
+import net.i2p.util.I2PAppThread;
 import net.i2p.util.Log;
 import net.i2p.util.ReusableGZIPInputStream;
 import net.i2p.util.SecureFileOutputStream;
+import net.i2p.util.RFC822Date;
 
 import java.io.BufferedWriter;
 import java.io.File;
@@ -32,8 +37,11 @@ import java.util.List;
 /**
  * From router console, simplified since we don't deal with router versions
  * or updates.
+ *
+ * As of 0.9.41, implements ClientApp to hang us off the ClientAppManager,
+ * so we can remove the static reference.
  */
-public class NewsFetcher implements Runnable, EepGet.StatusListener {
+public class NewsFetcher implements Runnable, EepGet.StatusListener, ClientApp {
     private final Context mCtx;
     private final RouterContext _context;
     private final Notifications _notif;
@@ -44,20 +52,18 @@ public class NewsFetcher implements Runnable, EepGet.StatusListener {
     private boolean _invalidated;
     private File _newsFile;
     private File _tempFile;
-    private static NewsFetcher _instance;
     private volatile boolean _isRunning = true;
     private Thread _thread;
+    private final ClientAppManager _mgr;
+    private volatile ClientAppState _state = UNINITIALIZED;
+    public static final String APP_NAME = "NewsFetcher";
 
-    public static /*final */ NewsFetcher getInstance() {
-        return _instance;
-    }
-
+    /**
+     *  As of 0.9.41, returns a new one every time. Only call once.
+     */
     public static /* final */ synchronized NewsFetcher getInstance(
             Context context, RouterContext ctx, Notifications notif) {
-        if (_instance != null)
-            return _instance;
-        _instance = new NewsFetcher(context, ctx, notif);
-        return _instance;
+        return new NewsFetcher(context, ctx, notif);
     }
 
     private static final String NEWS_DIR = "docs";
@@ -71,18 +77,17 @@ public class NewsFetcher implements Runnable, EepGet.StatusListener {
      *
      * @since 0.7.14 not configurable
      */
-    private static final String BACKUP_NEWS_URL_SU3 = "http://avviiexdngd32ccoy4kuckvc3mkf53ycvzbz6vz75vzhv4tbpk5a.b32.i2p/news.su3";
+    private static final String BACKUP_NEWS_URL_SU3 = "http://dn3tvalnjz432qkqsvpfdqrwpqkw3ye4n4i2uyfr4jexvo3sp5ka.b32.i2p/news/news.su3";
     private static final String PROP_LAST_CHECKED = "router.newsLastChecked";
     private static final String PROP_REFRESH_FREQUENCY = "router.newsRefreshFrequency";
     private static final String DEFAULT_REFRESH_FREQUENCY = 24 * 60 * 60 * 1000 + "";
     private static final String PROP_NEWS_URL = "router.newsURL";
-    public static final String DEFAULT_NEWS_URL_SU3 = "http://echelon.i2p/news/news.su3";
+    public static final String DEFAULT_NEWS_URL_SU3 = "http://tc73n4kivdroccekirco7rhgxdg5f3cjvbaapabupeyzrqwv5guq.b32.i2p/news.su3";
 
     private NewsFetcher(Context context, RouterContext ctx, Notifications notif) {
         mCtx = context;
         _context = ctx;
         _notif = notif;
-        _context.addShutdownTask(new Shutdown());
         _log = ctx.logManager().getLog(NewsFetcher.class);
         try {
             String last = ctx.getProperty(PROP_LAST_CHECKED);
@@ -96,6 +101,9 @@ public class NewsFetcher implements Runnable, EepGet.StatusListener {
         _newsFile = new File(newsDir, NEWS_FILE);
         _tempFile = new File(_context.getTempDir(), TEMP_NEWS_FILE);
         updateLastFetched();
+        _mgr = ctx.clientAppManager();
+        changeState(INITIALIZED);
+        _mgr.register(this);
     }
 
     private void updateLastFetched() {
@@ -134,7 +142,17 @@ public class NewsFetcher implements Runnable, EepGet.StatusListener {
     private static final long RUN_DELAY = 30 * 60 * 1000;
 
     public void run() {
-        _thread = Thread.currentThread();
+        changeState(RUNNING);
+        try {
+            run2();
+        } finally {
+            _mgr.unregister(this);
+            changeState(STOPPED);
+        }
+    }
+
+
+    private void run2() {
         try {
             Thread.sleep(INITIAL_DELAY);
         } catch (InterruptedException ie) {
@@ -276,14 +294,6 @@ public class NewsFetcher implements Runnable, EepGet.StatusListener {
     public void attempting(String url) {
     }
 
-    private class Shutdown implements Runnable {
-        public void run() {
-            _isRunning = false;
-            if (_thread != null)
-                _thread.interrupt();
-        }
-    }
-
     //
     // SU3 handlers
     //
@@ -417,4 +427,69 @@ public class NewsFetcher implements Runnable, EepGet.StatusListener {
             } catch (IOException ioe) {}
         }
     }
+
+    ////// begin ClientApp interface
+
+    /**
+     *  @since 0.9.41
+     */
+    public synchronized void startup() {
+        changeState(STARTING);
+        _thread = new I2PAppThread(this, "NewsFetcher", true);
+        _thread.start();
+    }
+
+    /**
+     *  @since 0.9.41
+     */
+    public synchronized void shutdown(String[] args) {
+        if (_state != RUNNING)
+            return;
+        changeState(STOPPING);
+        _isRunning = false;
+        if (_thread != null)
+            _thread.interrupt();
+        changeState(STOPPED);
+    }
+
+    /**
+     *  @since 0.9.41
+     */
+    public ClientAppState getState() {
+        return _state;
+    }
+
+    /**
+     *  @since 0.9.41
+     */
+    public String getName() {
+        return APP_NAME;
+    }
+
+    /**
+     *  @since 0.9.41
+     */
+    public String getDisplayName() {
+        return APP_NAME;
+    }
+
+    ////// end ClientApp interface
+    ////// begin ClientApp helpers
+
+    /**
+     *  @since 0.9.41
+     */
+    private void changeState(ClientAppState state) {
+        changeState(state, null);
+    }
+
+    /**
+     *  @since 0.9.41
+     */
+    private synchronized void changeState(ClientAppState state, Exception e) {
+        _state = state;
+        _mgr.notify(this, state, null, e);
+    }
+
+    ////// end ClientApp helpers
 }

app/src/main/java/net/i2p/android/help/Browser.java

@@ -1,19 +1,26 @@
 package net.i2p.android.help;
 
+import android.content.Context;
+import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.graphics.drawable.Drawable;
+import android.net.Uri;
 import android.support.annotation.NonNull;
 
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+
 public class Browser implements Comparable<Browser> {
     public final String packageName;
     public final CharSequence label;
     public final Drawable icon;
-    public final boolean isInstalled;
     public final boolean isKnown;
     public final boolean isSupported;
     public final boolean isRecommended;
 
+    private boolean isInstalled;
     /**
      * A browser that we don't know about.
      *
@@ -80,4 +87,23 @@ public class Browser implements Comparable<Browser> {
         } else
             return 2;
     }
+
+    public boolean isInstalled(Context context){
+        if (isInstalled) {
+            return true;
+        }
+        // Find all installed browsers that listen for ".i2p"
+        Intent intent = new Intent(Intent.ACTION_VIEW);
+        intent.setData(Uri.parse("http://stats.i2p"));
+
+        final PackageManager pm = context.getPackageManager();
+        List<ResolveInfo> installedBrowsers = pm.queryIntentActivities(intent, 0);
+        for (ResolveInfo browser : installedBrowsers) {
+            if (browser.activityInfo.packageName.equals(packageName)) {
+                isInstalled = true;
+                break;
+            }
+        }
+        return isInstalled;
+    }
 }

app/src/main/java/net/i2p/android/help/BrowserAdapter.java

@@ -1,5 +1,6 @@
 package net.i2p.android.help;
 
+import android.content.ActivityNotFoundException;
 import android.content.Context;
 import android.content.Intent;
 import android.graphics.ColorMatrix;
@@ -11,6 +12,7 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ImageView;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import net.i2p.android.router.R;
 
@@ -71,11 +73,15 @@ public class BrowserAdapter extends RecyclerView.Adapter<BrowserAdapter.ViewHold
         holder.mLabel.setText(browser.label);
 
         if (browser.isKnown) {
-            if (browser.isRecommended && browser.isInstalled) {
+            if (browser.isRecommended && browser.isInstalled(mCtx)) {
                 holder.mStatus.setImageDrawable(
                         mCtx.getResources().getDrawable(R.drawable.ic_stars_white_24dp));
                 holder.mStatus.setVisibility(View.VISIBLE);
-            } else if (browser.isSupported && !browser.isInstalled) {
+            } else if (browser.isSupported && browser.isInstalled(mCtx)) {
+                holder.mStatus.setImageDrawable(
+                        mCtx.getResources().getDrawable(R.drawable.ic_stars_white_24dp));
+                holder.mStatus.setVisibility(View.INVISIBLE);
+            } else if (browser.isSupported && !browser.isInstalled(mCtx)) {
                 holder.mStatus.setImageDrawable(
                         mCtx.getResources().getDrawable(R.drawable.ic_shop_white_24dp));
                 holder.mStatus.setOnClickListener(new View.OnClickListener() {
@@ -84,11 +90,15 @@ public class BrowserAdapter extends RecyclerView.Adapter<BrowserAdapter.ViewHold
                         String uriMarket = "market://search?q=pname:" + browser.packageName;
                         Uri uri = Uri.parse(uriMarket);
                         Intent intent = new Intent(Intent.ACTION_VIEW, uri);
-                        mCtx.startActivity(intent);
+                        try {
+                            mCtx.startActivity(intent);
+                        } catch (ActivityNotFoundException e) {
+                            Toast.makeText(mCtx, R.string.no_market_app, Toast.LENGTH_LONG).show();
+                        }
                     }
                 });
                 holder.mStatus.setVisibility(View.VISIBLE);
-            } else if (!browser.isSupported) {
+            } else if (browser.isInstalled(mCtx) && !browser.isSupported) {
                 // Make the icon gray-scale to show it is unsupported
                 ColorMatrix matrix = new ColorMatrix();
                 matrix.setSaturation(0);

app/src/main/java/net/i2p/android/help/BrowserListFragment.java

@@ -26,6 +26,8 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Set;
 import java.util.List;
 import java.util.Map;
 
@@ -121,8 +123,9 @@ public class BrowserListFragment extends Fragment implements
             intent.setData(Uri.parse("http://stats.i2p"));
 
             final PackageManager pm = getContext().getPackageManager();
-            List<ResolveInfo> installedBrowsers = pm.queryIntentActivities(intent, 0);
+            Set<ResolveInfo> installedBrowsers = new HashSet<>(pm.queryIntentActivities(intent, 0));
 
+            // Compare installed browsers to supported browsers
             for (ResolveInfo browser : installedBrowsers) {
                 if (recommended.contains(browser.activityInfo.packageName)) {
                     browsers.add(new Browser(pm, browser, true, true));

app/src/main/java/net/i2p/android/help/HelpHtmlFragment.java

@@ -30,7 +30,7 @@ public class HelpHtmlFragment extends Fragment {
         int padH = getResources().getDimensionPixelOffset(R.dimen.activity_horizontal_margin);
         int padV = getResources().getDimensionPixelOffset(R.dimen.activity_vertical_margin);
         text.setPadding(padH, padV, padH, padV);
-        text.setHtmlFromRawResource(getActivity(), getArguments().getInt(ARG_HTML_FILE), true);
+        text.setHtml(getArguments().getInt(ARG_HTML_FILE));
         return scroller;
     }
 }

app/src/main/java/net/i2p/android/i2ptunnel/TunnelDetailFragment.java

@@ -22,14 +22,17 @@ import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.CheckBox;
+import android.widget.ImageView;
 import android.widget.TextView;
 import android.widget.Toast;
 
 import net.i2p.I2PAppContext;
 import net.i2p.android.i2ptunnel.util.TunnelUtil;
 import net.i2p.android.router.R;
+import net.i2p.android.router.util.Util;
 import net.i2p.android.util.FragmentUtils;
 import net.i2p.app.ClientAppState;
+import net.i2p.i2ptunnel.TunnelController;
 import net.i2p.i2ptunnel.TunnelControllerGroup;
 
 import java.util.List;
@@ -41,6 +44,7 @@ public class TunnelDetailFragment extends Fragment {
     private TunnelControllerGroup mGroup;
     private TunnelEntry mTunnel;
     private Toolbar mToolbar;
+    private ImageView mStatus;
 
     public static TunnelDetailFragment newInstance(int tunnelId) {
         TunnelDetailFragment f = new TunnelDetailFragment();
@@ -73,21 +77,33 @@ public class TunnelDetailFragment extends Fragment {
         super.onCreate(savedInstanceState);
 
         String error;
+        List<TunnelController> controllers;
         try {
             mGroup = TunnelControllerGroup.getInstance();
             error = mGroup == null ? getResources().getString(R.string.i2ptunnel_not_initialized) : null;
+            controllers = mGroup == null ? null : mGroup.getControllers();
         } catch (IllegalArgumentException iae) {
             mGroup = null;
+            controllers = null;
             error = iae.toString();
         }
 
         if (mGroup == null) {
-            // Show error
+            Toast.makeText(getActivity().getApplicationContext(),
+                    error, Toast.LENGTH_LONG).show();
+            getActivity().finish();
         } else if (getArguments().containsKey(TUNNEL_ID)) {
             int tunnelId = getArguments().getInt(TUNNEL_ID);
-            mTunnel = new TunnelEntry(getActivity(),
-                    mGroup.getControllers().get(tunnelId),
-                    tunnelId);
+            try {
+                TunnelController controller = controllers.get(tunnelId);
+                mTunnel = new TunnelEntry(getActivity(), controller, tunnelId);
+            } catch (IndexOutOfBoundsException e) {
+                // Tunnel doesn't exist
+                Util.e("Could not load tunnel details", e);
+                Toast.makeText(getActivity().getApplicationContext(),
+                        R.string.i2ptunnel_no_tunnel_details, Toast.LENGTH_LONG).show();
+                getActivity().finish();
+            }
         }
     }
 
@@ -107,18 +123,18 @@ public class TunnelDetailFragment extends Fragment {
         updateToolbar();
 
         if (mTunnel != null) {
+            mStatus = (ImageView) v.findViewById(R.id.tunnel_status);
+            updateStatus();
+            ViewCompat.setTransitionName(mStatus, "status" + mTunnel.getId());
+
             TextView name = (TextView) v.findViewById(R.id.tunnel_name);
             name.setText(mTunnel.getName());
-            ViewCompat.setTransitionName(name,
-                    getActivity().getString(R.string.TUNNEL_NAME) + mTunnel.getId());
 
             TextView type = (TextView) v.findViewById(R.id.tunnel_type);
             type.setText(mTunnel.getType());
 
             TextView description = (TextView) v.findViewById(R.id.tunnel_description);
             description.setText(mTunnel.getDescription());
-            ViewCompat.setTransitionName(description,
-                    getActivity().getString(R.string.TUNNEL_DESCRIPTION) + mTunnel.getId());
 
             if (!mTunnel.getDetails().isEmpty()) {
                 v.findViewById(R.id.tunnel_details_container).setVisibility(View.VISIBLE);
@@ -204,7 +220,13 @@ public class TunnelDetailFragment extends Fragment {
                                         Uri uri = mTunnel.getRecommendedAppForTunnel();
                                         if (uri != null) {
                                             Intent intent = new Intent(Intent.ACTION_VIEW, uri);
-                                            startActivity(intent);
+                                            try {
+                                                startActivity(intent);
+                                            } catch (ActivityNotFoundException e) {
+                                                Toast.makeText(getContext(),
+                                                        R.string.no_market_app,
+                                                        Toast.LENGTH_LONG).show();
+                                            }
                                         }
                                     }
                                 })
@@ -244,6 +266,14 @@ public class TunnelDetailFragment extends Fragment {
         }
     }
 
+    private void updateStatus() {
+        mStatus.setImageDrawable(mTunnel.getStatusIcon());
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN)
+            mStatus.setBackgroundDrawable(mTunnel.getStatusBackground());
+        else
+            mStatus.setBackground(mTunnel.getStatusBackground());
+    }
+
     private boolean onToolbarItemSelected(MenuItem item) {
         if (mTunnel == null)
             return false;
@@ -257,6 +287,8 @@ public class TunnelDetailFragment extends Fragment {
                     + ' ' + mTunnel.getName(), Toast.LENGTH_LONG).show();
             // Reload the toolbar to change the start/stop action
             updateToolbar();
+            // Update the status icon
+            updateStatus();
             return true;
         case R.id.action_stop_tunnel:
             mTunnel.getController().stopTunnel();
@@ -265,42 +297,31 @@ public class TunnelDetailFragment extends Fragment {
                     + ' ' + mTunnel.getName(), Toast.LENGTH_LONG).show();
             // Reload the toolbar to change the start/stop action
             updateToolbar();
+            // Update the status icon
+            updateStatus();
             return true;
         case R.id.action_edit_tunnel:
             mCallback.onEditTunnel(mTunnel.getId());
             return true;
         case R.id.action_delete_tunnel:
-            DialogFragment dg = new DialogFragment() {
-                @NonNull
-                @Override
-                public Dialog onCreateDialog(Bundle savedInstanceState) {
-                    return new AlertDialog.Builder(getActivity())
-                        .setMessage(R.string.i2ptunnel_delete_confirm_message)
-                        .setPositiveButton(R.string.i2ptunnel_delete_confirm_button,
-                                new DialogInterface.OnClickListener() {
-
-                                    public void onClick(DialogInterface dialog, int which) {
-                                        List<String> msgs = TunnelUtil.deleteTunnel(
-                                                I2PAppContext.getGlobalContext(),
-                                                mGroup, mTunnel.getId(), null);
-                                        dialog.dismiss();
-                                        Toast.makeText(getActivity().getApplicationContext(),
-                                                msgs.get(0), Toast.LENGTH_LONG).show();
-                                        mCallback.onTunnelDeleted(mTunnel.getId(),
-                                                mGroup.getControllers().size());
-                                    }
-                                })
-                        .setNegativeButton(android.R.string.cancel, null)
-                        .create();
-                }
-            };
-            dg.show(getFragmentManager(), "delete_tunnel_dialog");
+            DialogFragment dg = DeleteTunnelDialogFragment.newInstance();
+            dg.show(getChildFragmentManager(), "delete_tunnel_dialog");
             return true;
         default:
             return super.onOptionsItemSelected(item);
         }
     }
 
+    private void onDeleteTunnel() {
+        List<String> msgs = TunnelUtil.deleteTunnel(
+                I2PAppContext.getGlobalContext(),
+                mGroup, mTunnel.getId(), null);
+        Toast.makeText(getActivity().getApplicationContext(),
+                msgs.get(0), Toast.LENGTH_LONG).show();
+        mCallback.onTunnelDeleted(mTunnel.getId(),
+                mGroup.getControllers().size());
+    }
+
     private void copyToClipbardLegacy() {
         android.text.ClipboardManager clipboard = (android.text.ClipboardManager) getActivity().getSystemService(Context.CLIPBOARD_SERVICE);
         clipboard.setText(mTunnel.getDetails());
@@ -313,4 +334,47 @@ public class TunnelDetailFragment extends Fragment {
                 mTunnel.getName(), mTunnel.getDetails());
         clipboard.setPrimaryClip(clip);
     }
+
+    public static class DeleteTunnelDialogFragment extends DialogFragment {
+        TunnelDetailFragment mListener;
+
+        public static DialogFragment newInstance() {
+            return new DeleteTunnelDialogFragment();
+        }
+
+        private void onAttachToParentFragment(Fragment fragment) {
+            // Verify that the host fragment implements the callback interface
+            try {
+                // Instantiate the TunnelDetailFragment so we can send events to the host
+                mListener = (TunnelDetailFragment) fragment;
+            } catch (ClassCastException e) {
+                // The fragment doesn't implement the interface, throw exception
+                throw new ClassCastException(fragment.toString()
+                        + " must be TunnelDetailFragment");
+            }
+        }
+
+        @Override
+        public void onCreate(Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+            onAttachToParentFragment(getParentFragment());
+        }
+
+        @NonNull
+        @Override
+        public Dialog onCreateDialog(Bundle savedInstanceState) {
+            return new AlertDialog.Builder(getActivity())
+                    .setMessage(R.string.i2ptunnel_delete_confirm_message)
+                    .setPositiveButton(R.string.i2ptunnel_delete_confirm_button,
+                            new DialogInterface.OnClickListener() {
+
+                                public void onClick(DialogInterface dialog, int which) {
+                                    dialog.dismiss();
+                                    mListener.onDeleteTunnel();
+                                }
+                            })
+                    .setNegativeButton(android.R.string.cancel, null)
+                    .create();
+        }
+    }
 }

app/src/main/java/net/i2p/android/i2ptunnel/TunnelEntry.java

@@ -6,16 +6,24 @@ import android.net.Uri;
 import android.widget.Toast;
 
 import net.i2p.I2PAppContext;
+import net.i2p.android.i2ptunnel.util.SaveTunnelTask;
 import net.i2p.android.i2ptunnel.util.TunnelUtil;
 import net.i2p.android.router.R;
+import net.i2p.android.router.util.Util;
 import net.i2p.data.Destination;
 import net.i2p.data.PrivateKeyFile;
 import net.i2p.i2ptunnel.TunnelController;
 import net.i2p.i2ptunnel.TunnelControllerGroup;
 import net.i2p.i2ptunnel.ui.TunnelConfig;
 
+import java.util.ArrayList;
 import java.util.List;
+import java.util.concurrent.ExecutionException;
 
+/**
+ *  A single tunnel.
+ *  Stored by the TunnelEntryAdapter.
+ */
 public class TunnelEntry {
     public static final int RUNNING = 1;
     public static final int STARTING = 2;
@@ -26,18 +34,33 @@ public class TunnelEntry {
     private final TunnelController mController;
     private final int mId;
 
+    /**
+     * @param tcg non-null
+     * @return the new TunnelEntry, or null if there was an error.
+     */
     public static TunnelEntry createNewTunnel(
             Context ctx,
             TunnelControllerGroup tcg,
             TunnelConfig cfg) {
         int tunnelId = tcg.getControllers().size();
-        List<String> msgs = TunnelUtil.saveTunnel(
-                I2PAppContext.getGlobalContext(), tcg, -1, cfg);
+        TunnelEntry ret = null;
+        List<String> msgs = new ArrayList<>();
+        SaveTunnelTask task = new SaveTunnelTask(tcg, -1, cfg);
+        try {
+            msgs.addAll(task.execute().get());
+            TunnelController cur = TunnelUtil.getController(tcg, tunnelId);
+            ret = new TunnelEntry(ctx, cur, tunnelId);
+        } catch (InterruptedException e) {
+            Util.e("Interrupted while saving tunnel config", e);
+            msgs.add(ctx.getString(R.string.i2ptunnel_msg_config_save_failed));
+        } catch (ExecutionException e) {
+            Util.e("Error while saving tunnel config", e);
+            msgs.add(ctx.getString(R.string.i2ptunnel_msg_config_save_failed));
+        }
         // TODO: Do something else with the other messages.
         Toast.makeText(ctx.getApplicationContext(),
                 msgs.get(0), Toast.LENGTH_LONG).show();
-        TunnelController cur = TunnelUtil.getController(tcg, tunnelId);
-        return new TunnelEntry(ctx, cur, tunnelId);
+        return ret;
     }
 
     public TunnelEntry(Context context, TunnelController controller, int id) {
@@ -262,6 +285,8 @@ public class TunnelEntry {
             return mContext.getResources()
                     .getDrawable(R.drawable.ic_schedule_black_24dp);
         case STARTING:
+            return mContext.getResources()
+                    .getDrawable(R.drawable.ic_sync_black_24dp);
         case RUNNING:
         case NOT_RUNNING:
         default:

app/src/main/java/net/i2p/android/i2ptunnel/TunnelEntryAdapter.java

@@ -14,13 +14,20 @@ import android.widget.TextView;
 import net.i2p.android.router.R;
 import net.i2p.android.util.FragmentUtils;
 
+import java.util.ArrayList;
 import java.util.List;
 
+/**
+ *  Contains the List of TunnelEntries.
+ *  There's two of these, one for client tunnels and
+ *  one for server tunnels.
+ *  Created by the TunnelListFragment.
+ */
 public class TunnelEntryAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
-    private Context mCtx;
-    private boolean mClientTunnels;
-    private TunnelListFragment.OnTunnelSelectedListener mListener;
-    private FragmentUtils.TwoPaneProvider mTwoPane;
+    private final Context mCtx;
+    private final boolean mClientTunnels;
+    private final TunnelListFragment.OnTunnelSelectedListener mListener;
+    private final FragmentUtils.TwoPaneProvider mTwoPane;
     private List<TunnelEntry> mTunnels;
     /**
      * The current activated item position. Only used on tablets.
@@ -34,10 +41,10 @@ public class TunnelEntryAdapter extends RecyclerView.Adapter<RecyclerView.ViewHo
     }
 
     public static class TunnelViewHolder extends RecyclerView.ViewHolder {
-        public ImageView status;
-        public TextView name;
-        public TextView description;
-        public TextView interfacePort;
+        public final ImageView status;
+        public final TextView name;
+        public final TextView description;
+        public final TextView interfacePort;
 
         public TunnelViewHolder(View itemView) {
             super(itemView);
@@ -65,6 +72,8 @@ public class TunnelEntryAdapter extends RecyclerView.Adapter<RecyclerView.ViewHo
     }
 
     public void addTunnel(TunnelEntry tunnel) {
+        if (mTunnels == null)
+            mTunnels = new ArrayList<TunnelEntry>();
         boolean wasEmpty = mTunnels.isEmpty();
         mTunnels.add(tunnel);
         if (wasEmpty) {
@@ -126,7 +135,7 @@ public class TunnelEntryAdapter extends RecyclerView.Adapter<RecyclerView.ViewHo
         switch (holder.getItemViewType()) {
             case R.string.router_not_running:
                 ((TextView) holder.itemView).setText(
-                        mCtx.getString(R.string.router_not_running));
+                        mCtx.getString(R.string.i2ptunnel_not_initialized));
                 break;
 
             case R.layout.listitem_empty:
@@ -144,31 +153,35 @@ public class TunnelEntryAdapter extends RecyclerView.Adapter<RecyclerView.ViewHo
                     tvh.status.setBackgroundDrawable(tunnel.getStatusBackground());
                 else
                     tvh.status.setBackground(tunnel.getStatusBackground());
+                ViewCompat.setTransitionName(tvh.status,
+                        "status" + tunnel.getId());
 
                 tvh.name.setText(tunnel.getName());
                 tvh.description.setText(tunnel.getDescription());
                 tvh.interfacePort.setText(tunnel.getTunnelLink(false));
 
-                ViewCompat.setTransitionName(tvh.name,
-                        mCtx.getString(R.string.TUNNEL_NAME) + tunnel.getId());
-                ViewCompat.setTransitionName(tvh.description,
-                        mCtx.getString(R.string.TUNNEL_DESCRIPTION) + tunnel.getId());
-
                 tvh.itemView.setSelected(mTwoPane.isTwoPane() && position == mActivatedPosition);
                 tvh.itemView.setOnClickListener(new View.OnClickListener() {
                     @Override
                     public void onClick(View view) {
+                        // TODO
+                        // lint priority 8/10
+                        // lint: Do not treat position as fixed; only use immediately and call holder.getAdapterPosition() to look it up later
+                        // javadocs: Note that unlike ListView, RecyclerView will not call this method again
+                        // if the position of the item changes in the data set unless the item itself is invalidated
+                        // or the new position cannot be determined.
+                        // For this reason, you should only use the position parameter while acquiring
+                        // the related data item inside this method and should not keep a copy of it.
+                        // If you need the position of an item later on (e.g. in a click listener),
+                        // use RecyclerView.ViewHolder.getAdapterPosition() which will have the updated adapter position.
                         int oldPosition = mActivatedPosition;
                         mActivatedPosition = position;
                         notifyItemChanged(oldPosition);
                         notifyItemChanged(position);
-                        Pair<View, String> namePair = Pair.create(
-                                (View)tvh.name,
-                                ViewCompat.getTransitionName(tvh.name));
-                        Pair<View, String> descPair = Pair.create(
-                                (View)tvh.description,
-                                ViewCompat.getTransitionName(tvh.description));
-                        Pair<View, String>[] pairs = new Pair[]{ namePair, descPair};
+                        Pair<View, String> statusPair = Pair.create(
+                                (View)tvh.status,
+                                ViewCompat.getTransitionName(tvh.status));
+                        Pair<View, String>[] pairs = new Pair[]{ statusPair};
                         mListener.onTunnelSelected(tunnel.getId(), pairs);
                     }
                 });

app/src/main/java/net/i2p/android/i2ptunnel/TunnelEntryLoader.java

@@ -13,10 +13,10 @@ import java.util.ArrayList;
 import java.util.List;
 
 public class TunnelEntryLoader extends AsyncTaskLoader<List<TunnelEntry>> {
-    private TunnelControllerGroup mGroup;
-    private boolean mClientTunnels;
+    private final TunnelControllerGroup mGroup;
+    private final boolean mClientTunnels;
     private List<TunnelEntry> mData;
-    private Handler mHandler;
+    private final Handler mHandler;
     private TunnelControllerMonitor mMonitor;
 
     public TunnelEntryLoader(Context context, TunnelControllerGroup tcg, boolean clientTunnels) {

app/src/main/java/net/i2p/android/i2ptunnel/TunnelListFragment.java

@@ -31,6 +31,12 @@ import net.i2p.i2ptunnel.TunnelControllerGroup;
 import java.util.ArrayList;
 import java.util.List;
 
+/**
+ *  The list of tunnels.
+ *  There's two of these, one for client tunnels and
+ *  one for server tunnels.
+ *  Creates the TunnelEntryAdapter.
+ */
 public class TunnelListFragment extends Fragment implements
         LoaderManager.LoaderCallbacks<List<TunnelEntry>> {
     public static final String SHOW_CLIENT_TUNNELS = "show_client_tunnels";
@@ -150,14 +156,21 @@ public class TunnelListFragment extends Fragment implements
     };
 
     public void updateState(State state) {
-        if (state == State.STOPPING || state == State.STOPPED ||
-                state == State.MANUAL_STOPPING ||
-                state == State.MANUAL_STOPPED ||
-                state == State.MANUAL_QUITTING ||
-                state == State.MANUAL_QUITTED)
-            getLoaderManager().destroyLoader(mClientTunnels ? CLIENT_LOADER_ID : SERVER_LOADER_ID);
-        else
-            initTunnels();
+        try {
+            if (state == State.INIT ||
+                    state == State.STARTING || // Wait until RouterContext is initialised
+                    state == State.STOPPING ||
+                    state == State.STOPPED ||
+                    state == State.MANUAL_STOPPING ||
+                    state == State.MANUAL_STOPPED ||
+                    state == State.MANUAL_QUITTING ||
+                    state == State.MANUAL_QUITTED)
+                getLoaderManager().destroyLoader(mClientTunnels ? CLIENT_LOADER_ID : SERVER_LOADER_ID);
+            else
+                initTunnels();
+        } catch (IllegalStateException ise) {
+            // Fragment isn't attached to any activity, so ignore state change
+        }
     }
 
     private void initTunnels() {

app/src/main/java/net/i2p/android/i2ptunnel/TunnelWizardActivity.java

@@ -2,6 +2,7 @@ package net.i2p.android.i2ptunnel;
 
 import android.app.Activity;
 import android.app.Dialog;
+import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Bundle;
@@ -21,26 +22,51 @@ public class TunnelWizardActivity extends AbstractWizardActivity {
 
     @Override
     protected DialogFragment onGetFinishWizardDialog() {
-        return new DialogFragment() {
-            @NonNull
-            @Override
-            public Dialog onCreateDialog(Bundle savedInstanceState) {
-                return new AlertDialog.Builder(getActivity())
-                        .setMessage(R.string.i2ptunnel_wizard_submit_confirm_message)
-                        .setPositiveButton(R.string.i2ptunnel_wizard_submit_confirm_button,
-                                new DialogInterface.OnClickListener() {
+        return FinishWizardDialogFragment.newInstance();
+    }
 
-                                    public void onClick(DialogInterface dialog, int which) {
-                                        Intent result = new Intent();
-                                        result.putExtra(TunnelsContainer.TUNNEL_WIZARD_DATA, mWizardModel.save());
-                                        setResult(Activity.RESULT_OK, result);
-                                        dialog.dismiss();
-                                        finish();
-                                    }
-                                })
-                        .setNegativeButton(android.R.string.cancel, null)
-                        .create();
+    public void onFinishWizard() {
+        Intent result = new Intent();
+        result.putExtra(TunnelsContainer.TUNNEL_WIZARD_DATA, mWizardModel.save());
+        setResult(Activity.RESULT_OK, result);
+        finish();
+    }
+
+    public static class FinishWizardDialogFragment extends DialogFragment {
+        TunnelWizardActivity mListener;
+
+        public static DialogFragment newInstance() {
+            return new FinishWizardDialogFragment();
+        }
+
+        public void onAttach(Context context) {
+            super.onAttach(context);
+            // Verify that the host fragment implements the callback interface
+            try {
+                // Instantiate the TunnelWizardActivity so we can send events to the host
+                mListener = (TunnelWizardActivity) context;
+            } catch (ClassCastException e) {
+                // The fragment doesn't implement the interface, throw exception
+                throw new ClassCastException(context.toString()
+                        + " must be TunnelWizardActivity");
             }
-        };
+        }
+
+        @NonNull
+        @Override
+        public Dialog onCreateDialog(Bundle savedInstanceState) {
+            return new AlertDialog.Builder(getActivity())
+                    .setMessage(R.string.i2ptunnel_wizard_submit_confirm_message)
+                    .setPositiveButton(R.string.i2ptunnel_wizard_submit_confirm_button,
+                            new DialogInterface.OnClickListener() {
+
+                                public void onClick(DialogInterface dialog, int which) {
+                                    dialog.dismiss();
+                                    mListener.onFinishWizard();
+                                }
+                            })
+                    .setNegativeButton(android.R.string.cancel, null)
+                    .create();
+        }
     }
 }

app/src/main/java/net/i2p/android/i2ptunnel/TunnelsContainer.java

@@ -33,6 +33,11 @@ import net.i2p.router.RouterContext;
 
 import java.util.List;
 
+/**
+ *  The top level Fragment of the tunnels tabs.
+ *  Creates client and server TunnelListFragments,
+ *  the options menu, and the new tunnel wizard button.
+ */
 public class TunnelsContainer extends Fragment implements
         FragmentUtils.TwoPaneProvider,
         TunnelListFragment.OnTunnelSelectedListener,
@@ -65,6 +70,13 @@ public class TunnelsContainer extends Fragment implements
         setHasOptionsMenu(true);
     }
 
+    private static boolean showActions() {
+        RouterContext rCtx = Util.getRouterContext();
+        TunnelControllerGroup tcg = TunnelControllerGroup.getInstance();
+        return rCtx != null && tcg != null &&
+               tcg.getState() == ClientAppState.RUNNING;
+    }
+
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View v = inflater.inflate(R.layout.container_tunnels, container, false);
@@ -72,6 +84,7 @@ public class TunnelsContainer extends Fragment implements
         mViewPager = (ViewPager) v.findViewById(R.id.pager);
         mPageIndicator = (TitlePageIndicator) v.findViewById(R.id.page_indicator);
         mNewTunnel = (ImageButton) v.findViewById(R.id.promoted_action);
+        mNewTunnel.setVisibility(showActions() ? View.VISIBLE : View.GONE);
 
         if (v.findViewById(R.id.detail_fragment) != null) {
             // The detail container view will be present only in the
@@ -154,17 +167,16 @@ public class TunnelsContainer extends Fragment implements
 
     @Override
     public void onPrepareOptionsMenu(Menu menu) {
-        RouterContext rCtx = Util.getRouterContext();
-        TunnelControllerGroup tcg = TunnelControllerGroup.getInstance();
-        boolean showActions = rCtx != null && tcg != null &&
-                (tcg.getState() == ClientAppState.STARTING ||
-                        tcg.getState() == ClientAppState.RUNNING);
+        boolean showActions = showActions();
 
         menu.findItem(R.id.action_start_all_tunnels).setVisible(showActions);
         menu.findItem(R.id.action_stop_all_tunnels).setVisible(showActions);
         menu.findItem(R.id.action_restart_all_tunnels).setVisible(showActions);
 
-        mNewTunnel.setVisibility(showActions ? View.VISIBLE : View.GONE);
+        // Was causing a NPE in version 4745238 (0.9.31)
+        if (mNewTunnel != null) {
+            mNewTunnel.setVisibility(showActions ? View.VISIBLE : View.GONE);
+        }
     }
 
     @Override
@@ -183,7 +195,10 @@ public class TunnelsContainer extends Fragment implements
                 msgs = tcg.stopAllControllers();
                 break;
             case R.id.action_restart_all_tunnels:
-                msgs = tcg.restartAllControllers();
+                // Do a manual stop-start cycle, because tcg.restartAllControllers() happens in the
+                // foreground, whereas tcg.startAllControllers() fires off threads for starting.
+                msgs = tcg.stopAllControllers();
+                msgs.addAll(tcg.startAllControllers());
                 break;
             default:
                 return super.onOptionsItemSelected(item);
@@ -200,15 +215,26 @@ public class TunnelsContainer extends Fragment implements
         if (requestCode == TUNNEL_WIZARD_REQUEST) {
             if (resultCode == Activity.RESULT_OK) {
                 Bundle tunnelData = data.getExtras().getBundle(TUNNEL_WIZARD_DATA);
+                // ticket #2483
+                if (tunnelData == null)
+                    return;
                 // TODO fetch earlier
                 TunnelControllerGroup tcg = TunnelControllerGroup.getInstance();
+                if (tcg == null) {
+                    // router went away
+                    Toast.makeText(getActivity().getApplicationContext(),
+                                   R.string.router_not_running, Toast.LENGTH_LONG).show();
+                    return;
+                }
                 TunnelConfig cfg = TunnelUtil.createConfigFromWizard(getActivity(), tcg, tunnelData);
                 TunnelEntry tunnel = TunnelEntry.createNewTunnel(getActivity(), tcg, cfg);
 
-                if (tunnel.isClient() && mClientFrag != null)
-                    mClientFrag.addTunnel(tunnel);
-                else if (mServerFrag != null)
-                    mServerFrag.addTunnel(tunnel);
+                if (tunnel != null) {
+                    if (tunnel.isClient() && mClientFrag != null)
+                        mClientFrag.addTunnel(tunnel);
+                    else if (mServerFrag != null)
+                        mServerFrag.addTunnel(tunnel);
+                }
             }
         }
     }

app/src/main/java/net/i2p/android/i2ptunnel/preferences/BaseTunnelPreferenceFragment.java

@@ -5,14 +5,21 @@ import android.os.Bundle;
 import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceGroup;
 import android.support.v7.preference.PreferenceScreen;
+import android.widget.Toast;
 
-import net.i2p.I2PAppContext;
+import net.i2p.android.i2ptunnel.util.SaveTunnelTask;
 import net.i2p.android.i2ptunnel.util.TunnelUtil;
 import net.i2p.android.preferences.util.CustomPreferenceFragment;
 import net.i2p.android.router.R;
+import net.i2p.android.router.util.Util;
 import net.i2p.i2ptunnel.TunnelControllerGroup;
 import net.i2p.i2ptunnel.ui.TunnelConfig;
 
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.CancellationException;
+import java.util.concurrent.TimeoutException;
+import java.util.concurrent.TimeUnit;
+
 public abstract class BaseTunnelPreferenceFragment extends CustomPreferenceFragment {
     protected static final String ARG_TUNNEL_ID = "tunnelId";
 
@@ -31,13 +38,30 @@ public abstract class BaseTunnelPreferenceFragment extends CustomPreferenceFragm
         }
 
         if (mGroup == null) {
-            // TODO Show error
+            Toast.makeText(getActivity().getApplicationContext(),
+                    error, Toast.LENGTH_LONG).show();
+            getActivity().finish();
         } else if (getArguments().containsKey(ARG_TUNNEL_ID)) {
             mTunnelId = getArguments().getInt(ARG_TUNNEL_ID, 0);
-            TunnelUtil.writeTunnelToPreferences(getActivity(), mGroup, mTunnelId);
+            try {
+                TunnelUtil.writeTunnelToPreferences(getActivity(), mGroup, mTunnelId);
+            } catch (IllegalArgumentException e) {
+                // Tunnel doesn't exist, or the tunnel config file could not be read
+                Util.e("Could not load tunnel details", e);
+                Toast.makeText(getActivity().getApplicationContext(),
+                        R.string.i2ptunnel_no_tunnel_details, Toast.LENGTH_LONG).show();
+                getActivity().finish();
+            }
             // https://stackoverflow.com/questions/17880437/which-settings-file-does-preferencefragment-read-write
             getPreferenceManager().setSharedPreferencesName(TunnelUtil.getPreferencesFilename(mTunnelId));
-            loadPreferences();
+            try {
+                loadPreferences();
+            } catch (IllegalArgumentException iae) {
+                // mGroup couldn't load its config file
+                Toast.makeText(getActivity().getApplicationContext(),
+                        iae.toString(), Toast.LENGTH_LONG).show();
+                getActivity().finish();
+            }
         }
     }
 
@@ -62,7 +86,21 @@ public abstract class BaseTunnelPreferenceFragment extends CustomPreferenceFragm
     private void saveTunnel() {
         if (mGroup != null) {
             TunnelConfig cfg = TunnelUtil.createConfigFromPreferences(getActivity(), mGroup, mTunnelId);
-            TunnelUtil.saveTunnel(I2PAppContext.getGlobalContext(), mGroup, mTunnelId, cfg);
+            SaveTunnelTask task = new SaveTunnelTask(mGroup, mTunnelId, cfg);
+            try {
+                // TODO: There used to be a possible ANR here, because the underlying I2P code
+                // checks if the session is open as part of updating its config. We may need to save
+                // completely asynchronously (and ensure we do actually save before the app closes).
+                task.execute().get(2, TimeUnit.SECONDS);
+            } catch (InterruptedException e) {
+                Util.e("Interrupted while saving tunnel config", e);
+            } catch (ExecutionException e) {
+                Util.e("Error while saving tunnel config", e);
+            } catch (CancellationException e) {
+                Util.e("Cancelled while saving tunnel config", e);
+            } catch (TimeoutException e) {
+                Util.e("Timed out while savomg tunnel config", e);
+            }
         }
     }
 

app/src/main/java/net/i2p/android/i2ptunnel/preferences/GeneralTunnelPreferenceFragment.java

@@ -1,5 +1,6 @@
 package net.i2p.android.i2ptunnel.preferences;
 
+import android.app.Activity;
 import android.content.DialogInterface;
 import android.content.SharedPreferences;
 import android.os.AsyncTask;
@@ -110,7 +111,8 @@ public class GeneralTunnelPreferenceFragment extends BaseTunnelPreferenceFragmen
                 generalCategory.removePreference(generalCategory.findPreference(getString(R.string.TUNNEL_SHARED_CLIENT)));
                 addPreferencesFromResource(R.xml.tunnel_gen_server_port, portCategory);
                 portCategory.removePreference(portCategory.findPreference(getString(R.string.TUNNEL_TARGET_PORT)));
-                portCategory.removePreference(portCategory.findPreference(getString(R.string.TUNNEL_USE_SSL)));
+                // # TODO: See trac issue #2296
+                //portCategory.removePreference(portCategory.findPreference(getString(R.string.TUNNEL_USE_SSL)));
             }
         }
 
@@ -135,14 +137,17 @@ public class GeneralTunnelPreferenceFragment extends BaseTunnelPreferenceFragmen
                 protected Void doInBackground(Void... voids) {
                     Set<String> interfaceSet = Addresses.getAllAddresses();
                     final String[] interfaces = interfaceSet.toArray(new String[interfaceSet.size()]);
-                    getActivity().runOnUiThread(new Runnable() {
-                        @Override
-                        public void run() {
-                            reachableBy.setEntries(interfaces);
-                            reachableBy.setEntryValues(interfaces);
-                            reachableBy.setEnabled(true);
-                        }
-                    });
+                    Activity activity = getActivity();
+                    if (activity != null) {
+                        activity.runOnUiThread(new Runnable() {
+                            @Override
+                            public void run() {
+                                reachableBy.setEntries(interfaces);
+                                reachableBy.setEntryValues(interfaces);
+                                reachableBy.setEnabled(true);
+                            }
+                        });
+                    }
                     return null;
                 }
             }.execute();
@@ -164,8 +169,11 @@ public class GeneralTunnelPreferenceFragment extends BaseTunnelPreferenceFragmen
 
         @Override
         protected void generalClientStandardOrIrc(boolean isStandardOrIrc) {
+            /*
+            # TODO: See trac issue #2296
             if (!isStandardOrIrc)
                 portCategory.removePreference(portCategory.findPreference(getString(R.string.TUNNEL_USE_SSL)));
+                 */
         }
 
         @Override
@@ -181,7 +189,8 @@ public class GeneralTunnelPreferenceFragment extends BaseTunnelPreferenceFragmen
         @Override
         protected void generalServerHttpBidirOrStreamr(boolean isStreamr) {
             addPreferencesFromResource(R.xml.tunnel_gen_client_port, portCategory);
-            portCategory.removePreference(portCategory.findPreference(getString(R.string.TUNNEL_USE_SSL)));
+            // # TODO: See trac issue #2296
+            //portCategory.removePreference(portCategory.findPreference(getString(R.string.TUNNEL_USE_SSL)));
             if (isStreamr)
                 portCategory.removePreference(portCategory.findPreference(getString(R.string.TUNNEL_LISTEN_PORT)));
 
@@ -197,7 +206,8 @@ public class GeneralTunnelPreferenceFragment extends BaseTunnelPreferenceFragmen
         protected void generalServerPortStreamr(boolean isStreamr) {
             if (isStreamr) {
                 portCategory.removePreference(portCategory.findPreference(getString(R.string.TUNNEL_TARGET_HOST)));
-                portCategory.removePreference(portCategory.findPreference(getString(R.string.TUNNEL_USE_SSL)));
+                // # TODO: See trac issue #2296
+                //portCategory.removePreference(portCategory.findPreference(getString(R.string.TUNNEL_USE_SSL)));
             }
         }
 

app/src/main/java/net/i2p/android/i2ptunnel/util/SaveTunnelTask.java

@@ -0,0 +1,32 @@
+package net.i2p.android.i2ptunnel.util;
+
+import android.os.AsyncTask;
+
+import net.i2p.I2PAppContext;
+import net.i2p.i2ptunnel.TunnelControllerGroup;
+import net.i2p.i2ptunnel.ui.TunnelConfig;
+
+import java.util.List;
+
+/**
+ * Save a TunnelConfig.
+ *
+ * This must be performed in a background thread, because the underlying I2P code calls
+ * InetAddress.getByName(), which will trigger a NetworkOnMainThreadException otherwise.
+ */
+public class SaveTunnelTask  extends AsyncTask<Void, Void, List<String>> {
+    final TunnelControllerGroup mGroup;
+    final int mTunnelId;
+    final TunnelConfig mCfg;
+
+    public SaveTunnelTask(TunnelControllerGroup group, int tunnelId, TunnelConfig cfg) {
+        mGroup = group;
+        mTunnelId = tunnelId;
+        mCfg = cfg;
+    }
+
+    @Override
+    protected List<String> doInBackground(Void... voids) {
+        return TunnelUtil.saveTunnel(I2PAppContext.getGlobalContext(), mGroup, mTunnelId, mCfg);
+    }
+}

app/src/main/java/net/i2p/android/i2ptunnel/util/TunnelLogic.java

@@ -11,7 +11,7 @@ package net.i2p.android.i2ptunnel.util;
  * tunnel properties always exist.
  */
 public abstract class TunnelLogic {
-    protected String mType;
+    protected final String mType;
 
     public TunnelLogic(String type) {
         mType = type;

app/src/main/java/net/i2p/android/i2ptunnel/util/TunnelUtil.java

@@ -7,6 +7,7 @@ import android.os.Bundle;
 
 import net.i2p.I2PAppContext;
 import net.i2p.android.router.R;
+import net.i2p.android.router.util.Util;
 import net.i2p.android.wizard.model.Page;
 import net.i2p.i2ptunnel.TunnelController;
 import net.i2p.i2ptunnel.TunnelControllerGroup;
@@ -99,6 +100,7 @@ public class TunnelUtil extends GeneralHelper {
     public static void writeTunnelToPreferences(Context ctx, TunnelControllerGroup tcg, int tunnel) {
         new TunnelUtil(tcg).writeTunnelToPreferences(ctx, tunnel);
     }
+
     public void writeTunnelToPreferences(Context ctx, int tunnel) {
         Resources res = ctx.getResources();
 
@@ -122,9 +124,9 @@ public class TunnelUtil extends GeneralHelper {
     }
 
     class TunnelToPreferences extends TunnelLogic {
-        SharedPreferences.Editor ed;
-        Resources res;
-        int tunnel;
+        final SharedPreferences.Editor ed;
+        final Resources res;
+        final int tunnel;
 
         public TunnelToPreferences(SharedPreferences.Editor ed, Resources res, int tunnel, String type) {
             super(type);
@@ -182,8 +184,10 @@ public class TunnelUtil extends GeneralHelper {
 
         @Override
         protected void generalClientStandardOrIrc(boolean isStandardOrIrc) {
+            /* # TODO: See trac issue #2296
             if (isStandardOrIrc)
                 ed.putBoolean(res.getString(R.string.TUNNEL_USE_SSL), isSSLEnabled(tunnel));
+                */
         }
 
         @Override
@@ -212,7 +216,8 @@ public class TunnelUtil extends GeneralHelper {
         protected void generalServerPortStreamr(boolean isStreamr) {
             if (!isStreamr) {
                 ed.putString(res.getString(R.string.TUNNEL_TARGET_HOST), getTargetHost(tunnel));
-                ed.putBoolean(res.getString(R.string.TUNNEL_USE_SSL), isSSLEnabled(tunnel));
+                // # TODO: See trac issue #2296
+                //ed.putBoolean(res.getString(R.string.TUNNEL_USE_SSL), isSSLEnabled(tunnel));
             }
         }
 
@@ -325,6 +330,7 @@ public class TunnelUtil extends GeneralHelper {
     public static TunnelConfig createConfigFromPreferences(Context ctx, TunnelControllerGroup tcg, int tunnel) {
         return new TunnelUtil(tcg).createConfigFromPreferences(ctx, tunnel);
     }
+
     public TunnelConfig createConfigFromPreferences(Context ctx, int tunnel) {
         Resources res = ctx.getResources();
 
@@ -345,11 +351,11 @@ public class TunnelUtil extends GeneralHelper {
     }
 
     class TunnelConfigFromPreferences extends TunnelLogic {
-        TunnelConfig cfg;
-        SharedPreferences prefs;
-        Resources res;
-        TunnelControllerGroup tcg;
-        int tunnel;
+        final TunnelConfig cfg;
+        final SharedPreferences prefs;
+        final Resources res;
+        final TunnelControllerGroup tcg;
+        final int tunnel;
 
         public TunnelConfigFromPreferences(TunnelConfig cfg, SharedPreferences prefs, Resources res,
                                            TunnelControllerGroup tcg, int tunnel, String type) {
@@ -414,8 +420,10 @@ public class TunnelUtil extends GeneralHelper {
 
         @Override
         protected void generalClientStandardOrIrc(boolean isStandardOrIrc) {
+            /* # TODO: See trac issue #2296
             if (isStandardOrIrc)
                 cfg.setUseSSL(prefs.getBoolean(res.getString(R.string.TUNNEL_USE_SSL), false));
+                */
         }
 
         @Override
@@ -444,7 +452,8 @@ public class TunnelUtil extends GeneralHelper {
         protected void generalServerPortStreamr(boolean isStreamr) {
             if (!isStreamr) {
                 cfg.setTargetHost(prefs.getString(res.getString(R.string.TUNNEL_TARGET_HOST), "127.0.0.1"));
-                cfg.setUseSSL(prefs.getBoolean(res.getString(R.string.TUNNEL_USE_SSL), false));
+                // # TODO: See trac issue #2296
+                //cfg.setUseSSL(prefs.getBoolean(res.getString(R.string.TUNNEL_USE_SSL), false));
             }
         }
 
@@ -560,10 +569,17 @@ public class TunnelUtil extends GeneralHelper {
         }
     }
 
+    /**
+     *  @param data non-null
+     */
     public static TunnelConfig createConfigFromWizard(
             Context ctx, TunnelControllerGroup tcg, Bundle data) {
         return new TunnelUtil(tcg).createConfigFromWizard(ctx, data);
     }
+
+    /**
+     *  @param data non-null
+     */
     public TunnelConfig createConfigFromWizard(Context ctx, Bundle data) {
         // Get the Bundle keys
         Resources res = ctx.getResources();
@@ -574,21 +590,26 @@ public class TunnelUtil extends GeneralHelper {
         // Update the TunnelConfig from the tunnel wizard settings
         String kClientServer = res.getString(R.string.i2ptunnel_wizard_k_client_server);
         String kType = res.getString(R.string.i2ptunnel_wizard_k_type);
-        String clientServer = data.getBundle(kClientServer).getString(Page.SIMPLE_DATA_KEY);
-        String typeName = data.getBundle(clientServer + ":" + kType).getString(Page.SIMPLE_DATA_KEY);
-        String type = getTypeFromName(typeName, ctx);
-        cfg.setType(type);
+        try {
+            String clientServer = data.getBundle(kClientServer).getString(Page.SIMPLE_DATA_KEY);
+            String typeName = data.getBundle(clientServer + ":" + kType).getString(Page.SIMPLE_DATA_KEY);
+            String type = getTypeFromName(typeName, ctx);
+            cfg.setType(type);
+
+            new TunnelConfigFromWizard(cfg, data, res, _group, type).runLogic();
+        } catch (NullPointerException ex) {
+            Util.e("Exception while trying to create config from wizard: "+ex.getMessage());
+        }
 
-        new TunnelConfigFromWizard(cfg, data, res, _group, type).runLogic();
 
         return cfg;
     }
 
     class TunnelConfigFromWizard extends TunnelLogic {
-        TunnelConfig cfg;
-        Bundle data;
-        Resources res;
-        TunnelControllerGroup tcg;
+        final TunnelConfig cfg;
+        final Bundle data;
+        final Resources res;
+        final TunnelControllerGroup tcg;
 
         public TunnelConfigFromWizard(TunnelConfig cfg, Bundle data, Resources res,
                                            TunnelControllerGroup tcg, String type) {

app/src/main/java/net/i2p/android/preferences/AdvancedPreferenceFragment.java

@@ -3,12 +3,11 @@ package net.i2p.android.preferences;
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
 import android.support.v7.preference.Preference;
-import android.support.v7.preference.PreferenceFragmentCompat;
 
 import net.i2p.android.router.R;
 import net.i2p.android.router.SettingsActivity;
 
-public class AdvancedPreferenceFragment extends PreferenceFragmentCompat {
+public class AdvancedPreferenceFragment extends I2PreferenceFragment {
     private static final String PREFERENCE_CATEGORY_TRANSPORTS = "preference_category_transports";
     private static final String PREFERENCE_CATEGORY_EXPL_TUNNELS = "preference_category_expl_tunnels";
 

app/src/main/java/net/i2p/android/preferences/TransportsPreferenceFragment.java

@@ -1,5 +1,6 @@
 package net.i2p.android.preferences;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.Bundle;
@@ -30,6 +31,7 @@ public class TransportsPreferenceFragment extends I2PreferenceFragment {
         ((SettingsActivity) getActivity()).getSupportActionBar().setTitle(R.string.settings_label_transports);
     }
 
+    @SuppressLint("ApplySharedPref")
     private void loadProperties() {
         Context context= getActivity();
         RouterContext ctx = Util.getRouterContext();

app/src/main/java/net/i2p/android/preferences/util/ConnectionLimitPreference.java

@@ -68,6 +68,10 @@ public class ConnectionLimitPreference extends EditTextPreference {
 
     @Override
     protected boolean persistString(String value) {
-        return value != null && persistInt(Integer.valueOf(value));
+        try {
+            return value != null && persistInt(Integer.valueOf(value));
+        } catch (NumberFormatException e) {
+            return false;
+        }
     }
 }

app/src/main/java/net/i2p/android/preferences/util/IntEditTextPreference.java

@@ -38,6 +38,10 @@ public class IntEditTextPreference extends EditTextPreference {
 
     @Override
     protected boolean persistString(String value) {
-        return value != null && persistInt(Integer.valueOf(value));
+        try {
+            return value != null && persistInt(Integer.valueOf(value));
+        } catch (NumberFormatException e) {
+            return false;
+        }
     }
 }

app/src/main/java/net/i2p/android/preferences/util/IntListPreference.java

@@ -20,7 +20,7 @@ public class IntListPreference extends ListPreference {
                 getPersistedInt(0);
             } catch (ClassCastException e) {
                 // Fix for where this preference was previously stored in a ListPreference
-                getSharedPreferences().edit().remove(getKey()).commit();
+                getSharedPreferences().edit().remove(getKey()).apply();
             }
         }
 

app/src/main/java/net/i2p/android/router/ConsoleContainer.java

@@ -12,6 +12,7 @@ import android.view.View;
 import android.view.ViewGroup;
 
 import net.i2p.android.ext.floatingactionbutton.FloatingActionsMenu;
+import net.i2p.android.ext.floatingactionbutton.FloatingActionsMenu.OnFloatingActionsMenuUpdateListener;
 import net.i2p.android.router.dialog.AboutDialog;
 import net.i2p.android.router.dialog.TextResourceDialog;
 import net.i2p.android.router.log.LogActivity;
@@ -42,6 +43,17 @@ public class ConsoleContainer extends Fragment {
         }
 
         mConsoleMenu = (FloatingActionsMenu) v.findViewById(R.id.console_action_menu);
+        // update visibility based on router state
+        mConsoleMenu.setOnFloatingActionsMenuUpdateListener(new OnFloatingActionsMenuUpdateListener() {
+            public void onMenuExpanded() {
+                // this is called after the animation starts, sadly
+                setMenuVisibility();
+            }
+            public void onMenuCollapsed() {
+                // call it here too so the expand animation isn't glitchy as often
+                setMenuVisibility();
+            }
+        });
         mConsoleMenu.findViewById(R.id.action_news).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
@@ -63,13 +75,13 @@ public class ConsoleContainer extends Fragment {
                 startActivity(graphs);
             }
         });
-        mConsoleMenu.findViewById(R.id.action_peers).setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View view) {
-                Intent peers = new Intent(getActivity(), PeersActivity.class);
-                startActivity(peers);
-            }
-        });
+//        mConsoleMenu.findViewById(R.id.action_peers).setOnClickListener(new View.OnClickListener() {
+//            @Override
+//            public void onClick(View view) {
+//                Intent peers = new Intent(getActivity(), PeersActivity.class);
+//                startActivity(peers);
+//            }
+//        });
         mConsoleMenu.findViewById(R.id.action_netdb).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
@@ -87,11 +99,6 @@ public class ConsoleContainer extends Fragment {
         inflater.inflate(R.menu.activity_main_actions, menu);
     }
 
-    @Override
-    public void onPrepareOptionsMenu(Menu menu) {
-        setMenuVisibility();
-    }
-
     private void setMenuVisibility() {
         boolean routerRunning = Util.getRouterContext() != null;
         mConsoleMenu.findViewById(R.id.action_logs).setVisibility(routerRunning ? View.VISIBLE : View.GONE);
@@ -100,8 +107,8 @@ public class ConsoleContainer extends Fragment {
         if (getActivity() != null) {
             boolean advanced = PreferenceManager.getDefaultSharedPreferences(getActivity())
                     .getBoolean("i2pandroid.main.showStats", false);
-            mConsoleMenu.findViewById(R.id.action_peers).setVisibility(
-                    advanced && routerRunning ? View.VISIBLE : View.GONE);
+//            mConsoleMenu.findViewById(R.id.action_peers).setVisibility(
+//                    advanced && routerRunning ? View.VISIBLE : View.GONE);
             mConsoleMenu.findViewById(R.id.action_netdb).setVisibility(
                     advanced && routerRunning ? View.VISIBLE : View.GONE);
         }

app/src/main/java/net/i2p/android/router/MainFragment.java

@@ -1,15 +1,19 @@
 package net.i2p.android.router;
 
 import android.app.Activity;
+import android.content.ActivityNotFoundException;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.graphics.Typeface;
+import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
+import android.os.PowerManager;
 import android.preference.PreferenceManager;
+import android.provider.Settings;
 import android.support.v4.content.LocalBroadcastManager;
 import android.support.v7.app.AlertDialog;
 import android.view.Gravity;
@@ -69,6 +73,7 @@ public class MainFragment extends I2PFragmentBase {
     private TextView vAdvStatusText;
 
     private static final String PREF_CONFIGURE_BROWSER = "app.dialog.configureBrowser";
+    private static final String PREF_CONFIGURE_BATTERY = "app.dialog.configureBattery";
     private static final String PREF_FIRST_START = "app.router.firstStart";
     private static final String PREF_SHOW_STATS = "i2pandroid.main.showStats";
     protected static final String PROP_NEW_INSTALL = "i2p.newInstall";
@@ -320,7 +325,10 @@ public class MainFragment extends I2PFragmentBase {
         }
     }
 
-    public void updateState(State newState) {
+    /**
+     *  Changes the logo based on the state.
+     */
+    private void updateState(State newState) {
         if (newState == State.INIT ||
                 newState == State.STOPPED ||
                 newState == State.MANUAL_STOPPED ||
@@ -328,13 +336,13 @@ public class MainFragment extends I2PFragmentBase {
                 newState == State.NETWORK_STOPPED) {
             mConsoleLights.setImageResource(R.drawable.routerlogo_0);
         } else if (newState == State.STARTING ||
-                //newState == State.GRACEFUL_SHUTDOWN || // Don't change lights for graceful
                 newState == State.STOPPING ||
                 newState == State.MANUAL_STOPPING ||
                 newState == State.MANUAL_QUITTING ||
                 newState == State.NETWORK_STOPPING) {
             mConsoleLights.setImageResource(R.drawable.routerlogo_1);
-        } else if (newState == State.RUNNING) {
+        } else if (newState == State.RUNNING ||
+                   newState == State.GRACEFUL_SHUTDOWN) {
             mConsoleLights.setImageResource(R.drawable.routerlogo_2);
         } else if (newState == State.ACTIVE) {
             mConsoleLights.setImageResource(R.drawable.routerlogo_3);
@@ -375,9 +383,9 @@ public class MainFragment extends I2PFragmentBase {
             String uptime = DataHelper.formatDuration(ctx.router().getUptime());
             int active = ctx.commSystem().countActivePeers();
             int known = Math.max(ctx.netDb().getKnownRouters() - 1, 0);
-            vUptime.setText("" + uptime);
-            vActive.setText("" + active);
-            vKnown.setText("" + known);
+            vUptime.setText(uptime);
+            vActive.setText(Integer.toString(active));
+            vKnown.setText(Integer.toString(known));
 
             // Load running tunnels
             loadDestinations(ctx);
@@ -437,6 +445,7 @@ public class MainFragment extends I2PFragmentBase {
             // network but no router context
             vStatusContainer.setVisibility(View.GONE);
             getActivity().findViewById(R.id.console_usage_stats).setVisibility(View.INVISIBLE);
+            updateState(State.STOPPED);
             /**
              * **
              * RouterService svc = _routerService; String status = "connected? "
@@ -526,12 +535,12 @@ public class MainFragment extends I2PFragmentBase {
      * compare translated nicknames - put "shared clients" first in the sort
      */
     private class AlphaComparator implements Comparator<Destination> {
-        private String xsc;
-        private RouterContext _ctx;
+        private final String xsc;
+        private final RouterContext _ctx;
 
         public AlphaComparator(RouterContext ctx) {
             _ctx = ctx;
-            xsc = _(ctx, SHARED_CLIENTS);
+            xsc = _t(ctx, SHARED_CLIENTS);
         }
 
         public int compare(Destination lhs, Destination rhs) {
@@ -559,12 +568,12 @@ public class MainFragment extends I2PFragmentBase {
         if (name == null)
             name = d.calculateHash().toBase64().substring(0, 6);
         else
-            name = _(ctx, name);
+            name = _t(ctx, name);
 
         return name;
     }
 
-    private String _(RouterContext ctx, String s) {
+    private String _t(RouterContext ctx, String s) {
         if (SHARED_CLIENTS.equals(s))
             return getString(R.string.shared_clients);
         else
@@ -578,16 +587,18 @@ public class MainFragment extends I2PFragmentBase {
         );
         if (language == null) {
             AlertDialog.Builder b = new AlertDialog.Builder(getActivity());
+            // avoid ISE caused by fragment detachment ticket #2631
+            final String languages[] = getResources().getStringArray(R.array.languages);
             b.setTitle(R.string.choose_language)
                     .setItems(R.array.language_names, new DialogInterface.OnClickListener() {
                         @Override
                         public void onClick(DialogInterface dialog, int which) {
                             // Save the language choice
-                            String language = getResources().getStringArray(R.array.languages)[which];
+                            String language = languages[which];
                             PreferenceManager.getDefaultSharedPreferences(getActivity())
                                     .edit()
                                     .putString(getString(R.string.PREF_LANGUAGE), language)
-                                    .commit();
+                                    .apply();
                             // Close the dialog
                             dialog.dismiss();
                             // Broadcast the change to RouterService just in case the router is running
@@ -614,16 +625,57 @@ public class MainFragment extends I2PFragmentBase {
                             ab.setPref(PREF_CONFIGURE_BROWSER, false);
                             Intent hi = new Intent(getActivity(), BrowserConfigActivity.class);
                             startActivity(hi);
+                            checkDialog();
                         }
                     })
                     .setNegativeButton(R.string.no, new DialogInterface.OnClickListener() {
                         @Override
                         public void onClick(DialogInterface dialog, int i) {
-                            dialog.cancel();
+                            dialog.dismiss();
                             ab.setPref(PREF_CONFIGURE_BROWSER, false);
+                            checkDialog();
                         }
                     })
                     .show();
+        } else if (ab.getPref(PREF_CONFIGURE_BATTERY, true)) {
+            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
+                // only for Marshmallow and newer versions
+                final Intent intent = new Intent();
+                final Context mContext = ab.getApplicationContext();
+                String packageName = mContext.getPackageName();
+                PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
+                if (!pm.isIgnoringBatteryOptimizations(packageName)) {
+                    AlertDialog.Builder b = new AlertDialog.Builder(getActivity());
+                    b.setTitle(R.string.configure_no_doze_title)
+                            .setMessage(R.string.configure_no_doze)
+                            .setCancelable(false)
+                            .setPositiveButton(R.string.yes, new DialogInterface.OnClickListener() {
+                                @Override
+                                public void onClick(DialogInterface dialog, int i) {
+                                    String packageName = mContext.getPackageName();
+                                    dialog.dismiss();
+                                    ab.setPref(PREF_CONFIGURE_BATTERY, true);
+                                    intent.setAction(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS);
+                                    intent.setData(Uri.parse("package:" + packageName));
+                                    try {
+                                        mContext.startActivity(intent);
+                                    } catch (ActivityNotFoundException activityNotFound) {
+                                        ab.setPref(PREF_CONFIGURE_BATTERY, true);
+                                    }
+                                }
+                            })
+                            .setNegativeButton(R.string.no, new DialogInterface.OnClickListener() {
+                                @Override
+                                public void onClick(DialogInterface dialog, int i) {
+                                    dialog.cancel();
+                                    ab.setPref(PREF_CONFIGURE_BATTERY, false);
+                                }
+                            })
+                            .show();
+                }
+            } else {
+                ab.setPref(PREF_CONFIGURE_BATTERY, false);
+            }
         }
         /*VersionDialog dialog = new VersionDialog();
         String oldVersion = ((I2PActivityBase) getActivity()).getPref(PREF_INSTALLED_VERSION, "??");
@@ -648,9 +700,11 @@ public class MainFragment extends I2PFragmentBase {
     private void checkFirstStart() {
         I2PActivityBase ab = (I2PActivityBase) getActivity();
         boolean firstStart = ab.getPref(PREF_FIRST_START, true);
-        if (firstStart) {
+        // Check ab.isFinishing() because DialogFragment.show() will throw IllegalStateException if
+        // called after ab.onSaveInstanceState().
+        if (firstStart && !ab.isFinishing()) {
             FirstStartDialog dialog = new FirstStartDialog();
-            dialog.show(getActivity().getSupportFragmentManager(), "firststart");
+            dialog.show(ab.getSupportFragmentManager(), "firststart");
             ab.setPref(PREF_FIRST_START, false);
         }
     }

app/src/main/java/net/i2p/android/router/NewsFragment.java

@@ -13,6 +13,7 @@ import android.widget.TextView;
 
 import net.i2p.android.apps.NewsFetcher;
 import net.i2p.android.router.util.Util;
+import net.i2p.router.RouterContext;
 
 import java.io.ByteArrayOutputStream;
 import java.io.File;
@@ -33,12 +34,16 @@ public class NewsFragment extends I2PFragmentBase {
     @Override
     public void onResume() {
         super.onResume();
-        NewsFetcher nf = NewsFetcher.getInstance();
-        if (nf != null) {
-            // Always update the status
-            TextView tv = (TextView) getActivity().findViewById(R.id.news_status);
-            tv.setText(nf.status().replace(" ", " "));
-            tv.setVisibility(View.VISIBLE);
+        RouterContext ctx = getRouterContext();
+        if (ctx != null) {
+            NewsFetcher nf = (NewsFetcher) ctx.clientAppManager().getRegisteredApp(NewsFetcher.APP_NAME);
+            if (nf != null) {
+                // Always update the status
+                // This is the news last updated/checked text at the bottom
+                TextView tv = (TextView) getActivity().findViewById(R.id.news_status);
+                tv.setText(nf.status().replace(" ", " "));
+                tv.setVisibility(View.VISIBLE);
+            }
         }
 
         // Only update the content if we need to

app/src/main/java/net/i2p/android/router/addressbook/AddressbookAddWizardActivity.java

@@ -2,6 +2,7 @@ package net.i2p.android.router.addressbook;
 
 import android.app.Activity;
 import android.app.Dialog;
+import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Bundle;
@@ -20,26 +21,51 @@ public class AddressbookAddWizardActivity extends AbstractWizardActivity {
 
     @Override
     protected DialogFragment onGetFinishWizardDialog() {
-        return new DialogFragment() {
-            @NonNull
-            @Override
-            public Dialog onCreateDialog(Bundle savedInstanceState) {
-                return new AlertDialog.Builder(getActivity())
-                        .setMessage("Add to private addressbook?")
-                        .setPositiveButton("Add",
-                                new DialogInterface.OnClickListener() {
+        return FinishWizardDialogFragment.newInstance();
+    }
 
-                                    public void onClick(DialogInterface dialog, int which) {
-                                        Intent result = new Intent();
-                                        setResult(Activity.RESULT_OK, result);
-                                        result.putExtra(AddressbookContainer.ADD_WIZARD_DATA, mWizardModel.save());
-                                        dialog.dismiss();
-                                        finish();
-                                    }
-                                })
-                        .setNegativeButton(android.R.string.cancel, null)
-                        .create();
+    public void onFinishWizard() {
+        Intent result = new Intent();
+        result.putExtra(AddressbookContainer.ADD_WIZARD_DATA, mWizardModel.save());
+        setResult(Activity.RESULT_OK, result);
+        finish();
+    }
+
+    public static class FinishWizardDialogFragment extends DialogFragment {
+        AddressbookAddWizardActivity mListener;
+
+        public static DialogFragment newInstance() {
+            return new FinishWizardDialogFragment();
+        }
+
+        public void onAttach(Context context) {
+            super.onAttach(context);
+            // Verify that the host fragment implements the callback interface
+            try {
+                // Instantiate the AddressbookAddWizardActivity so we can send events to the host
+                mListener = (AddressbookAddWizardActivity) context;
+            } catch (ClassCastException e) {
+                // The fragment doesn't implement the interface, throw exception
+                throw new ClassCastException(context.toString()
+                        + " must be AddressbookAddWizardActivity");
             }
-        };
+        }
+
+        @NonNull
+        @Override
+        public Dialog onCreateDialog(Bundle savedInstanceState) {
+            return new AlertDialog.Builder(getActivity())
+                    .setMessage("Add to private addressbook?")
+                    .setPositiveButton("Add",
+                            new DialogInterface.OnClickListener() {
+
+                                public void onClick(DialogInterface dialog, int which) {
+                                    dialog.dismiss();
+                                    mListener.onFinishWizard();
+                                }
+                            })
+                    .setNegativeButton(android.R.string.cancel, null)
+                    .create();
+        }
     }
 }

app/src/main/java/net/i2p/android/router/addressbook/AddressbookFragment.java

@@ -26,7 +26,6 @@ import com.eowise.recyclerview.stickyheaders.StickyHeadersBuilder;
 import com.eowise.recyclerview.stickyheaders.StickyHeadersItemDecoration;
 import com.pnikosis.materialishprogress.ProgressWheel;
 
-import net.i2p.addressbook.Daemon;
 import net.i2p.android.router.R;
 import net.i2p.android.router.service.RouterService;
 import net.i2p.android.router.service.State;
@@ -167,15 +166,23 @@ public class AddressbookFragment extends Fragment implements
         int loaderId = PRIVATE_BOOK.equals(mBook) ?
                 PRIVATE_LOADER_ID : ROUTER_LOADER_ID;
 
-        if (state == State.STOPPING || state == State.STOPPED ||
-                state == State.MANUAL_STOPPING ||
-                state == State.MANUAL_STOPPED ||
-                state == State.MANUAL_QUITTING ||
-                state == State.MANUAL_QUITTED)
-            getLoaderManager().destroyLoader(loaderId);
-        else {
-            mRecyclerView.setLoading(true);
-            getLoaderManager().initLoader(loaderId, null, this);
+        try {
+            LoaderManager manager = getLoaderManager();
+            if (state == State.INIT ||
+                    state == State.STARTING || // Wait until RouterContext is initialised
+                    state == State.STOPPING ||
+                    state == State.STOPPED ||
+                    state == State.MANUAL_STOPPING ||
+                    state == State.MANUAL_STOPPED ||
+                    state == State.MANUAL_QUITTING ||
+                    state == State.MANUAL_QUITTED)
+                manager.destroyLoader(loaderId);
+            else {
+                mRecyclerView.setLoading(true);
+                manager.initLoader(loaderId, null, this);
+            }
+        } catch (IllegalStateException ise) {
+            // Fragment isn't attached to any activity, so ignore state change
         }
     }
 
@@ -207,8 +214,11 @@ public class AddressbookFragment extends Fragment implements
             mAddToAddressbook.setVisibility(rCtx == null ? View.GONE : View.VISIBLE);
 
         // Only show "Reload subscriptions" for router addressbook
-        menu.findItem(R.id.action_reload_subscriptions).setVisible(
-                rCtx != null && !PRIVATE_BOOK.equals(mBook));
+        MenuItem reloadSubs = menu.findItem(R.id.action_reload_subscriptions);
+        if (reloadSubs != null) {
+            reloadSubs.setVisible(
+                    rCtx != null && !PRIVATE_BOOK.equals(mBook));
+        }
 
         // Only allow adding to private book 
         if (!PRIVATE_BOOK.equals(mBook) && mAddToAddressbook != null) {
@@ -223,9 +233,12 @@ public class AddressbookFragment extends Fragment implements
 
         switch (item.getItemId()) {
             case R.id.action_reload_subscriptions:
-                Daemon.wakeup();
-                Toast.makeText(getActivity(), "Reloading subscriptions...",
-                        Toast.LENGTH_SHORT).show();
+                RouterContext rCtx = Util.getRouterContext();
+                if (rCtx != null) {
+                    rCtx.namingService().requestUpdate(null);
+                    Toast.makeText(getActivity(), "Reloading subscriptions...",
+                            Toast.LENGTH_SHORT).show();
+                }
                 return true;
             default:
                 return super.onOptionsItemSelected(item);

app/src/main/java/net/i2p/android/router/addressbook/AddressbookSettingsActivity.java

@@ -61,7 +61,7 @@ public class AddressbookSettingsActivity extends AppCompatActivity {
 
     private boolean load() {
         String res = FileUtil.readTextFile(i2pDir.getAbsolutePath(), -1, true);
-        if (res.length() > 0) {
+        if (res != null && res.length() > 0) {
             text_content_subscriptions.setText(res);
             return true;
         }

app/src/main/java/net/i2p/android/router/netdb/NetDbDetailFragment.java

@@ -154,6 +154,8 @@ public class NetDbDetailFragment extends I2PFragmentBase {
             String val = (String)e.getValue();
             addTableRow(table, DataHelper.stripHTML(key), DataHelper.stripHTML(val));
         }
+        // spacer
+        addTableRow(table, "", "");
 
         addresses.addView(table);
     }
@@ -230,9 +232,11 @@ public class NetDbDetailFragment extends I2PFragmentBase {
         TextView tl1, tl2;
 
         row = new TableRow(getActivity());
+        // left top right bottom
         row.setPadding(10, 0, 0, 0);
 
         tl1 = new TextView(getActivity());
+        tl1.setPadding(0, 0, 20, 0);
         tl2 = new TextView(getActivity());
 
         tl1.setText(key);

app/src/main/java/net/i2p/android/router/netdb/NetDbEntryLoader.java

@@ -5,6 +5,7 @@ import android.support.v4.content.AsyncTaskLoader;
 
 import net.i2p.android.router.util.Util;
 import net.i2p.data.Destination;
+import net.i2p.data.Hash;
 import net.i2p.data.LeaseSet;
 import net.i2p.data.router.RouterInfo;
 import net.i2p.router.RouterContext;
@@ -24,14 +25,27 @@ public class NetDbEntryLoader extends AsyncTaskLoader<List<NetDbEntry>> {
         mRouters = routers;
     }
 
+    /** put us on top */
     private static class RouterInfoComparator implements Comparator<RouterInfo> {
+        private final Hash _us;
+
+        public RouterInfoComparator(Hash us) {
+            _us = us;
+        }
+
         public int compare(RouterInfo l, RouterInfo r) {
-            return l.getIdentity().getHash().toBase64().compareTo(r.getIdentity().getHash().toBase64());
+            Hash lh = l.getIdentity().getHash();
+            Hash rh = r.getIdentity().getHash();
+            if (lh.equals(_us))
+                return -1;
+            if (rh.equals(_us))
+                return 1;
+            return lh.toBase64().compareTo(rh.toBase64());
         }
     }
 
     private class LeaseSetComparator implements Comparator<LeaseSet> {
-        private RouterContext mRContext;
+        private final RouterContext mRContext;
 
         public LeaseSetComparator(RouterContext rContext) {
             super();
@@ -53,9 +67,9 @@ public class NetDbEntryLoader extends AsyncTaskLoader<List<NetDbEntry>> {
     public List<NetDbEntry> loadInBackground() {
         List<NetDbEntry> ret = new ArrayList<>();
         RouterContext routerContext = Util.getRouterContext();
-        if (routerContext != null && routerContext.netDb().isInitialized()) {
+        if (routerContext != null && routerContext.netDb().isInitialized() && routerContext.routerHash() != null) {
             if (mRouters) {
-                Set<RouterInfo> routers = new TreeSet<>(new RouterInfoComparator());
+                Set<RouterInfo> routers = new TreeSet<>(new RouterInfoComparator(routerContext.routerHash()));
                 routers.addAll(routerContext.netDb().getRouters());
                 for (RouterInfo ri : routers) {
                     NetDbEntry entry = NetDbEntry.fromRouterInfo(routerContext, ri);

app/src/main/java/net/i2p/android/router/netdb/NetDbStatsLoader.java

@@ -17,7 +17,7 @@ import java.util.Set;
 import java.util.TreeSet;
 
 public class NetDbStatsLoader extends AsyncTaskLoader<List<ObjectCounter<String>>> {
-    private RouterContext mRContext;
+    private final RouterContext mRContext;
     private List<ObjectCounter<String>> mData;
 
     public NetDbStatsLoader(Context context, RouterContext rContext) {
@@ -95,7 +95,7 @@ public class NetDbStatsLoader extends AsyncTaskLoader<List<ObjectCounter<String>
         int rv = 0;
         for (RouterAddress addr : info.getAddresses()) {
             String style = addr.getTransportStyle();
-            if (style.equals("NTCP")) {
+            if (style.equals("NTCP") || style.equals("NTCP2")) {
                 rv |= NTCP;
             } else if (style.equals("SSU")) {
                 if (addr.getOption("iport0") != null)
@@ -108,7 +108,12 @@ public class NetDbStatsLoader extends AsyncTaskLoader<List<ObjectCounter<String>
                 rv |= IPV6;
 
         }
-        return getContext().getString(TNAMES[rv]);
+        int tname = TNAMES[rv];
+        // remap cases with no string to "Hidden or starting up"
+        // so we don't crash NotFoundException
+        if (tname == 0)
+            tname = TNAMES[0];
+        return getContext().getString(tname);
     }
 
     @Override

app/src/main/java/net/i2p/android/router/netdb/NetDbSummaryTableFragment.java

@@ -77,6 +77,7 @@ public class NetDbSummaryTableFragment extends Fragment {
         titleRow.setPadding(10, 0, 0, 0);
 
         tl1 = new TextView(getActivity());
+        tl1.setPadding(0, 0, 20, 0);
         tl1.setTextSize(20);
         tl2 = new TextView(getActivity());
         tl2.setTextSize(20);
@@ -108,6 +109,7 @@ public class NetDbSummaryTableFragment extends Fragment {
         row.setPadding(10, 0, 0, 0);
 
         tl1 = new TextView(getActivity());
+        tl1.setPadding(0, 0, 20, 0);
         tl2 = new TextView(getActivity());
 
         tl1.setText(name);

app/src/main/java/net/i2p/android/router/provider/CacheProvider.java

@@ -2,6 +2,7 @@ package net.i2p.android.router.provider;
 
 import android.content.ContentProvider;
 import android.content.ContentValues;
+import android.content.Context;
 import android.content.SharedPreferences;
 import android.database.Cursor;
 import android.net.Uri;
@@ -18,6 +19,7 @@ import java.io.IOException;
 import java.io.OutputStream;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 
 /**
@@ -153,7 +155,7 @@ public class CacheProvider extends ContentProvider {
         // first seg is empty since string starts with /
         String nonce = segs.length > 1 ? segs[1] : null;
         String scheme = segs.length > 2 ? segs[2] : null;
-        String host = segs.length > 3 ? segs[3].toLowerCase() : null;
+        String host = segs.length > 3 ? segs[3].toLowerCase(Locale.US) : null;
         String realPath = segs.length > 4 ? segs[4] : "";
         String query = uri.getEncodedQuery();
         if (query == null) {
@@ -230,10 +232,11 @@ public class CacheProvider extends ContentProvider {
     }
 
     private ParcelFileDescriptor eepFetch(Uri uri) throws FileNotFoundException {
-        AppCache cache = AppCache.getInstance(getContext());
+        Context ctx = getContext();
+        AppCache cache = AppCache.getInstance(ctx);
         OutputStream out;
         try {
-            out = cache.createCacheFile(uri);
+            out = cache.createCacheFile(ctx, uri);
         } catch (IOException ioe) {
             throw new FileNotFoundException(ioe.toString());
         }
@@ -244,7 +247,7 @@ public class CacheProvider extends ContentProvider {
             File file = cache.getCacheFile(uri);
             if (file.length() > 0) {
                 // this call will insert it back to us (don't set as current base)
-                Uri content = cache.addCacheFile(uri, false);
+                Uri content = cache.addCacheFile(ctx, uri, false);
                 return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
             } else {
                  Util.d("CacheProvider Sucess but no data " + uri);
@@ -252,7 +255,7 @@ public class CacheProvider extends ContentProvider {
         } else {
             Util.d("CacheProvider Eepget fail " + uri);
         }
-        AppCache.getInstance().removeCacheFile(uri);
+        cache.removeCacheFile(ctx, uri);
         throw new FileNotFoundException("eepget fail");
     }
 
@@ -319,7 +322,7 @@ public class CacheProvider extends ContentProvider {
             for (String key : toDelete) {
                 edit.remove(key);
             }
-            edit.commit();
+            edit.apply();
         }
     }
 
@@ -355,11 +358,10 @@ public class CacheProvider extends ContentProvider {
         return _sharedPrefs.getString(pref, null);
     }
 
-    /** @return success */
-    private boolean setPref(String pref, String val) {
+    private void setPref(String pref, String val) {
         SharedPreferences.Editor edit = _sharedPrefs.edit();
         edit.putString(pref, val);
-        return edit.commit();
+        edit.apply();
     }
 
     /** @return success */

app/src/main/java/net/i2p/android/router/receiver/OnBootReceiver.java

@@ -5,6 +5,7 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
+import net.i2p.android.router.util.Util;
 
 import net.i2p.android.router.I2PConstants;
 import net.i2p.android.router.service.RouterService;
@@ -14,12 +15,22 @@ public class OnBootReceiver extends BroadcastReceiver implements I2PConstants {
 
     @Override
     public void onReceive(Context context, Intent intent) {
+        if (!Intent.ACTION_BOOT_COMPLETED.equals(intent.getAction())) {
+            Util.e("spoofed BOOT_COMPLETED");
+            return;
+        }
+
         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
         boolean startOnBoot = prefs.getBoolean(PREF_START_ON_BOOT, false);
 
         if (startOnBoot) {
             Intent routerService = new Intent(context, RouterService.class);
-            context.startService(routerService);
+            // Ticket #2404
+            try {
+                context.startService(routerService);
+            } catch (IllegalStateException ex) {
+                Util.e("Error: ", ex);
+            }
         }
     }
 }

app/src/main/java/net/i2p/android/router/service/LoadClientsJob.java

@@ -2,7 +2,7 @@ package net.i2p.android.router.service;
 
 import android.content.Context;
 
-import net.i2p.BOB.BOB;
+//import net.i2p.BOB.BOB;
 import net.i2p.I2PAppContext;
 import net.i2p.addressbook.DaemonThread;
 import net.i2p.android.apps.NewsFetcher;
@@ -12,6 +12,7 @@ import net.i2p.i2ptunnel.TunnelControllerGroup;
 import net.i2p.router.Job;
 import net.i2p.router.JobImpl;
 import net.i2p.router.RouterContext;
+import net.i2p.router.startup.RouterAppManager;
 import net.i2p.util.I2PAppThread;
 
 import java.io.IOException;
@@ -37,13 +38,13 @@ import java.io.IOException;
  */
 class LoadClientsJob extends JobImpl {
 
-    private Context mCtx;
-    private Notifications _notif;
+    private final Context mCtx;
+    private final Notifications _notif;
     private DaemonThread _addressbook;
-    private BOB _bob;
+    //private BOB _bob;
 
     /** this is the delay to load (and start) the clients. */
-    private static final long LOAD_DELAY = 90*1000;
+    private static final long LOAD_DELAY = 60*1000;
 
 
     public LoadClientsJob(Context ctx, RouterContext rCtx, Notifications notif) {
@@ -63,20 +64,11 @@ class LoadClientsJob extends JobImpl {
         t.setPriority(Thread.NORM_PRIORITY - 1);
         t.start();
 
-        NewsFetcher fetcher = NewsFetcher.getInstance(mCtx, getContext(), _notif);
-        t = new I2PAppThread(fetcher, "NewsFetcher", true);
-        t.start();
-
-        _addressbook = new DaemonThread(new String[] {"addressbook"});
-        _addressbook.setName("Addressbook");
-        _addressbook.setDaemon(true);
-        _addressbook.start();
-
         // add other clients here
-        _bob = new BOB(I2PAppContext.getGlobalContext(), null, new String[0]);
-        try {
-            _bob.startup();
-        } catch (IOException ioe) {}
+        //_bob = new BOB(I2PAppContext.getGlobalContext(), null, new String[0]);
+        //try {
+        //    _bob.startup();
+        //} catch (IOException ioe) {}
 
         getContext().addShutdownTask(new ClientShutdownHook());
     }
@@ -90,12 +82,29 @@ class LoadClientsJob extends JobImpl {
         public String getName() { return "Start I2P Tunnel"; }
 
         public void runJob() {
+            while (!getContext().router().isRunning()) {
+                try { Thread.sleep(1000); } catch (InterruptedException ie) { return; }
+                if (!getContext().router().isAlive()) {
+                    Util.e("Router stopped before i2ptunnel could start");
+                    return;
+                }
+            }
             Util.d("Starting i2ptunnel");
-            TunnelControllerGroup tcg = TunnelControllerGroup.getInstance();
+            TunnelControllerGroup tcg = TunnelControllerGroup.getInstance(getContext());
             try {
                 tcg.startup();
                 int sz = tcg.getControllers().size();
                 Util.d("i2ptunnel started " + sz + " clients");
+
+                // no use starting these until i2ptunnel starts
+                RouterContext ctx = getContext();
+                NewsFetcher fetcher = NewsFetcher.getInstance(mCtx, getContext(), _notif);
+                ctx.routerAppManager().addAndStart(fetcher, new String[0]);
+
+                _addressbook = new DaemonThread(new String[] {"addressbook"});
+                _addressbook.setName("Addressbook");
+                _addressbook.setDaemon(true);
+                _addressbook.start();
             } catch (IllegalArgumentException iae) {
                 Util.e("i2ptunnel failed to start", iae);
             }
@@ -109,8 +118,8 @@ class LoadClientsJob extends JobImpl {
             // i2ptunnel registers its own hook
             // StatSummarizer registers its own hook
             // NewsFetcher registers its own hook
-            if (_bob != null)
-                _bob.shutdown(null);
+            //if (_bob != null)
+            //    _bob.shutdown(null);
             if (_addressbook != null)
                 _addressbook.halt();
         }

app/src/main/java/net/i2p/android/router/service/RouterService.java

@@ -23,7 +23,6 @@ import net.i2p.data.DataHelper;
 import net.i2p.router.Job;
 import net.i2p.router.Router;
 import net.i2p.router.RouterContext;
-import net.i2p.router.RouterLaunch;
 
 import java.lang.ref.WeakReference;
 
@@ -106,7 +105,7 @@ public class RouterService extends Service {
         if(lastState == State.RUNNING || lastState == State.ACTIVE) {
             Intent intent = new Intent(this, RouterService.class);
             intent.putExtra(EXTRA_RESTART, true);
-            onStartCommand(intent, 12345, 67890);
+            onStartCommand(intent, START_FLAG_REDELIVERY | START_FLAG_RETRY, 67890);
         } else if(lastState == State.MANUAL_QUITTING || lastState == State.GRACEFUL_SHUTDOWN) {
             synchronized(_stateLock) {
                 setState(State.MANUAL_QUITTED);
@@ -213,16 +212,19 @@ public class RouterService extends Service {
             //Util.d(MARKER + this + " JBigI speed test finished, launching router");
 
             // Launch the router!
-            RouterLaunch.main(null);
+            // TODO Store this somewhere instead of relying on global context?
+            Router r = new Router();
+            r.setUPnPScannerCallback(new SSDPLocker(RouterService.this));
+            r.runRouter();
             synchronized(_stateLock) {
                 if(_state != State.STARTING) {
                     return;
                 }
                 setState(State.RUNNING);
                 _statusBar.replace(StatusBar.ICON_RUNNING, R.string.notification_status_running);
-                _context = Util.getRouterContext();
+                _context = r.getContext();
                 if (_context == null) {
-                    throw new IllegalStateException("No contexts. This is usually because the router is either starting up or shutting down.");
+                    throw new IllegalStateException("Router has no context?");
                 }
                 _context.router().setKillVMOnEnd(false);
                 Job loadJob = new LoadClientsJob(RouterService.this, _context, _notif);
@@ -793,12 +795,12 @@ public class RouterService extends Service {
     }
 
     /**
-     * @return success
+     * Saves state in background thread
      */
-    private boolean saveState() {
+    private void saveState() {
         SharedPreferences prefs = getSharedPreferences(SHARED_PREFS, 0);
         SharedPreferences.Editor edit = prefs.edit();
         edit.putString(LAST_STATE, _state.toString());
-        return edit.commit();
+        edit.apply();
     }
 }

app/src/main/java/net/i2p/android/router/service/SSDPLocker.java

@@ -0,0 +1,33 @@
+package net.i2p.android.router.service;
+
+import android.content.Context;
+import android.net.wifi.WifiManager;
+import android.net.wifi.WifiManager.MulticastLock;
+
+import net.i2p.router.transport.UPnPScannerCallback;
+
+/**
+ *  To lock/unlock UPnP, so it works on some phones.
+ *  Many many phones don't require this, but do be safe...
+ *
+ *  @since 0.9.41
+ */
+public class SSDPLocker implements UPnPScannerCallback {
+
+    private final MulticastLock lock;
+
+    public SSDPLocker(Context context) {
+        WifiManager wifi = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
+        lock = wifi.createMulticastLock("ssdp");
+        lock.setReferenceCounted(false);
+    }
+
+    public void beforeScan() {
+        lock.acquire();
+    }
+
+    public void afterScan() {
+        if (lock.isHeld())
+            lock.release();
+    }
+}

app/src/main/java/net/i2p/android/router/stats/PeersFragment.java

@@ -39,7 +39,7 @@ public class PeersFragment extends I2PFragmentBase {
         wv.getSettings().setLoadsImagesAutomatically(true); // was false
         // http://stackoverflow.com/questions/2369310/webview-double-tap-zoom-not-working-on-a-motorola-droid-a855
         wv.getSettings().setUseWideViewPort(true);
-        _wvClient = new I2PWebViewClient();
+        _wvClient = new I2PWebViewClient(this);
         wv.setWebViewClient(_wvClient);
         wv.getSettings().setBuiltInZoomControls(true);
         return v;

app/src/main/java/net/i2p/android/router/stats/RateGraphFragment.java

@@ -11,9 +11,10 @@ import android.view.ViewGroup;
 import com.androidplot.xy.BarFormatter;
 import com.androidplot.xy.BarRenderer;
 import com.androidplot.xy.BoundaryMode;
+import com.androidplot.xy.StepMode;
+import com.androidplot.xy.XYGraphWidget;
 import com.androidplot.xy.XYPlot;
 import com.androidplot.xy.XYSeries;
-import com.androidplot.xy.XYStepMode;
 
 import net.i2p.android.router.I2PFragmentBase;
 import net.i2p.android.router.R;
@@ -120,26 +121,25 @@ public class RateGraphFragment extends I2PFragmentBase {
 
             _ratePlot.addSeries(rateSeries, new BarFormatter(Color.argb(200, 0, 80, 0), Color.argb(200, 0, 80, 0)));
             _ratePlot.calculateMinMaxVals();
-            long maxX = _ratePlot.getCalculatedMaxX().longValue();
+            long maxX = _ratePlot.getBounds().getMaxX().longValue();
 
             Util.d("Adding plot updater to listener");
             _listener.addObserver(_plotUpdater);
 
             // Only one line, so hide the legend
-            _ratePlot.getLegendWidget().setVisible(false);
+            _ratePlot.getLegend().setVisible(false);
 
-            BarRenderer renderer = (BarRenderer) _ratePlot.getRenderer(BarRenderer.class);
-            renderer.setBarWidthStyle(BarRenderer.BarWidthStyle.VARIABLE_WIDTH);
-            renderer.setBarGap(0);
+            BarRenderer renderer = _ratePlot.getRenderer(BarRenderer.class);
+            renderer.setBarGroupWidth(BarRenderer.BarGroupWidthMode.FIXED_GAP, 0);
 
             _ratePlot.setDomainUpperBoundary(maxX, BoundaryMode.GROW);
-            _ratePlot.setDomainStep(XYStepMode.INCREMENT_BY_VAL, 15 * 60 * 1000);
-            _ratePlot.setTicksPerDomainLabel(4);
+            _ratePlot.setDomainStep(StepMode.INCREMENT_BY_VAL, 15 * 60 * 1000);
+            _ratePlot.setLinesPerDomainLabel(4);
 
             _ratePlot.setRangeLowerBoundary(0, BoundaryMode.FIXED);
-            _ratePlot.setTicksPerRangeLabel(5);
+            _ratePlot.setLinesPerRangeLabel(5);
 
-            _ratePlot.setDomainValueFormat(new Format() {
+            _ratePlot.getGraph().getLineLabelStyle(XYGraphWidget.Edge.BOTTOM).setFormat(new Format() {
                 private DateFormat dateFormat = SimpleDateFormat.getTimeInstance(DateFormat.SHORT);
 
                 @Override
@@ -157,13 +157,13 @@ public class RateGraphFragment extends I2PFragmentBase {
             });
 
             final int finalK = _k;
-            _ratePlot.setRangeValueFormat(new Format() {
+            _ratePlot.getGraph().getLineLabelStyle(XYGraphWidget.Edge.LEFT).setFormat(new Format() {
 
                 @Override
                 public StringBuffer format(Object obj, @NonNull StringBuffer toAppendTo,
                                            @NonNull FieldPosition pos) {
                     double val = ((Number) obj).doubleValue();
-                    double maxY = _ratePlot.getCalculatedMaxY().doubleValue();
+                    double maxY = _ratePlot.getBounds().getMaxY().doubleValue();
 
                     if (val == 0 || maxY < finalK) {
                         return new DecimalFormat("0").format(val, toAppendTo, pos);
@@ -194,8 +194,8 @@ public class RateGraphFragment extends I2PFragmentBase {
 
     private void updatePlot() {
         _ratePlot.calculateMinMaxVals();
-        double maxY = _ratePlot.getCalculatedMaxY().doubleValue();
-        _ratePlot.setRangeStep(XYStepMode.INCREMENT_BY_VAL, getRangeStep(maxY, _k));
+        double maxY = _ratePlot.getBounds().getMaxY().doubleValue();
+        _ratePlot.setRangeStep(StepMode.INCREMENT_BY_VAL, getRangeStep(maxY, _k));
 
         _ratePlot.redraw();
     }

app/src/main/java/net/i2p/android/router/util/AppCache.java

@@ -30,7 +30,6 @@ public class AppCache {
     private static AppCache _instance;
     private static File _cacheDir;
     private static long _totalSize;
-    private static ContentResolver _resolver;
     /** the LRU cache */
     private final Map<Integer, Object> _cache;
 
@@ -62,7 +61,6 @@ public class AppCache {
         _cacheDir = new File(ctx.getCacheDir(), DIR_NAME);
         _cacheDir.mkdir();
         Util.d("AppCache cache dir " + _cacheDir);
-        _resolver = ctx.getContentResolver();
         _cache = new LHM(MAX_FILES);
         initialize();
     }
@@ -72,9 +70,9 @@ public class AppCache {
      *  addCacheFile() or removeCacheFile() after the data is written.
      *  @param key no fragment allowed
      */
-    public OutputStream createCacheFile(Uri key) throws IOException {
+    public OutputStream createCacheFile(Context ctx, Uri key) throws IOException {
         // remove any old file so the total stays correct
-        removeCacheFile(key);
+        removeCacheFile(ctx, key);
         File f = toFile(key);
         f.getParentFile().mkdirs();
         return new FileOutputStream(f);
@@ -88,7 +86,7 @@ public class AppCache {
      *  @param key no fragment allowed
      *  @param setAsCurrentBase tell CacheProvider
      */
-    public Uri addCacheFile(Uri key, boolean setAsCurrentBase) {
+    public Uri addCacheFile(Context ctx, Uri key, boolean setAsCurrentBase) {
         int hash = toHash(key);
         synchronized(_cache) {
             _cache.put(hash, DUMMY);
@@ -96,19 +94,19 @@ public class AppCache {
         // file:/// uri
         //return Uri.fromFile(toFile(hash)).toString();
         // content:// uri
-        return insertContent(key, setAsCurrentBase);
+        return insertContent(ctx, key, setAsCurrentBase);
     }
 
     /**
      *  Remove a previously written file from the cache index and disk.
      *  @param key no fragment allowed
      */
-    public void removeCacheFile(Uri key) {
+    public void removeCacheFile(Context ctx, Uri key) {
         int hash = toHash(key);
         synchronized(_cache) {
             _cache.remove(hash);
         }
-        deleteContent(key);
+        deleteContent(ctx, key);
     }
 
     /**
@@ -118,7 +116,7 @@ public class AppCache {
      *
      *  @param key no fragment allowed
      */
-    public Uri getCacheUri(Uri key) {
+    public Uri getCacheUri(Context ctx, Uri key) {
         int hash = toHash(key);
         // poke the LRU
         Object present;
@@ -126,7 +124,7 @@ public class AppCache {
             present = _cache.get(hash);
         }
         if (present != null)
-            setAsCurrentBase(key);
+            setAsCurrentBase(ctx, key);
         return CacheProvider.getContentUri(key);
     }
 
@@ -242,7 +240,7 @@ public class AppCache {
     /**
      *  @return the uri inserted or null on failure
      */
-    private static Uri insertContent(Uri key, boolean setAsCurrentBase) {
+    private static Uri insertContent(Context ctx, Uri key, boolean setAsCurrentBase) {
         String path = toFile(key).getAbsolutePath();
         ContentValues cv = new ContentValues();
         cv.put(CacheProvider.DATA, path);
@@ -250,8 +248,9 @@ public class AppCache {
             cv.put(CacheProvider.CURRENT_BASE, Boolean.TRUE);
         Uri uri = CacheProvider.getContentUri(key);
         if (uri != null) {
-           _resolver.insert(uri, cv);
-           return uri;
+            ContentResolver resolver = ctx.getContentResolver();
+            resolver.insert(uri, cv);
+            return uri;
         }
         return null;
     }
@@ -259,19 +258,23 @@ public class AppCache {
     /**
      *  Set key as current base. May be content or i2p key.
      */
-    private static void setAsCurrentBase(Uri key) {
+    private static void setAsCurrentBase(Context ctx, Uri key) {
         ContentValues cv = new ContentValues();
         cv.put(CacheProvider.CURRENT_BASE, Boolean.TRUE);
         Uri uri = CacheProvider.getContentUri(key);
-        if (uri != null)
-           _resolver.insert(uri, cv);
+        if (uri != null) {
+            ContentResolver resolver = ctx.getContentResolver();
+            resolver.insert(uri, cv);
+        }
     }
 
     /** ok for now but we will need to store key in the map and delete by integer */
-    private static void deleteContent(Uri key) {
+    private static void deleteContent(Context ctx, Uri key) {
         Uri uri = CacheProvider.getContentUri(key);
-        if (uri != null)
-            _resolver.delete(uri, null, null);
+        if (uri != null) {
+            ContentResolver resolver = ctx.getContentResolver();
+            resolver.delete(uri, null, null);
+        }
     }
 
     /**

app/src/main/java/net/i2p/android/router/util/NamingServiceUtil.java

@@ -32,7 +32,17 @@ public class NamingServiceUtil {
         String kDest = res.getString(R.string.addressbook_add_wizard_k_destination);
 
         String hostName = data.getBundle(kHostName).getString(Page.SIMPLE_DATA_KEY);
-        String host = toASCII(res, hostName); // Already validated, won't throw IAE
+        String host;
+        try {
+            // Already validated, won't throw IAE
+            // ^^^ NOT TRUE ticket #2489 ^^^
+            host = toASCII(res, hostName);
+        } catch (IllegalArgumentException iae) {
+            Toast.makeText(ctx,
+                           iae.getMessage(),
+                           Toast.LENGTH_LONG).show();
+            return false;
+        }
         String displayHost = host.equals(hostName) ? hostName :
                                                      hostName + " (" + host + ')';
 

app/src/main/java/net/i2p/android/router/util/Util.java

@@ -34,6 +34,7 @@ import java.util.Collection;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Properties;
 
@@ -185,9 +186,9 @@ public abstract class Util implements I2PConstants {
                     toRemove.setProperty("routerconsole.lang", "");
                     toRemove.setProperty("routerconsole.country", "");
                 } else {
-                    routerProps.setProperty("routerconsole.lang", language[0].toLowerCase());
+                    routerProps.setProperty("routerconsole.lang", language[0].toLowerCase(Locale.US));
                     if (language.length == 2)
-                        routerProps.setProperty("routerconsole.country", language[1].toUpperCase());
+                        routerProps.setProperty("routerconsole.country", language[1].toUpperCase(Locale.US));
                     else
                         toRemove.setProperty("routerconsole.country", "");
                 }
@@ -299,7 +300,15 @@ public abstract class Util implements I2PConstants {
 
     public static String getFileDir(Context context) {
         // This needs to be changed so that we can have an alternative place
-        return context.getFilesDir().getAbsolutePath();
+        File f = context.getFilesDir();
+        if (f == null) {
+            // https://code.google.com/p/android/issues/detail?id=8886
+            // Seems to be a race condition; try again.
+            // Supposedly only in pre-4.4 devices, but this was observed on a
+            // Samsung Galaxy Grand Prime (grandprimeve3g), 1024MB RAM, Android 5.1
+            f = context.getFilesDir();
+        }
+        return f.getAbsolutePath();
     }
 
     /**
@@ -437,10 +446,15 @@ public abstract class Util implements I2PConstants {
             case IPV4_UNKNOWN_IPV6_OK:
             case IPV4_DISABLED_IPV6_OK:
             case IPV4_SNAT_IPV6_OK:
-                RouterAddress ra = routerInfo.getTargetAddress("NTCP");
-                if (ra == null)
+                List<RouterAddress> ras = routerInfo.getTargetAddresses("NTCP", "NTCP2");
+                if (ras.isEmpty())
                     return new NetStatus(NetStatus.Level.INFO, toStatusString(ctx, status));
-                byte[] ip = ra.getIP();
+                byte[] ip = null;
+                for (RouterAddress ra : ras) {
+                    ip = ra.getIP();
+                    if (ip != null)
+                        break;
+                }
                 if (ip == null)
                     return new NetStatus(NetStatus.Level.ERROR, ctx.getString(R.string.net_status_error_unresolved_tcp));
                 // TODO set IPv6 arg based on configuration?
@@ -454,7 +468,7 @@ public abstract class Util implements I2PConstants {
 
             case REJECT_UNSOLICITED:
             case IPV4_DISABLED_IPV6_FIREWALLED:
-                if (routerInfo.getTargetAddress("NTCP") != null)
+                if (routerInfo.getTargetAddresses("NTCP", "NTCP2").isEmpty())
                     return new NetStatus(NetStatus.Level.WARN, ctx.getString(R.string.net_status_warn_firewalled_inbound_tcp));
                 // fall through...
             case IPV4_FIREWALLED_IPV6_OK:
@@ -475,7 +489,7 @@ public abstract class Util implements I2PConstants {
             case IPV4_UNKNOWN_IPV6_FIREWALLED:
             case IPV4_DISABLED_IPV6_UNKNOWN:
             default:
-                ra = routerInfo.getTargetAddress("SSU");
+                RouterAddress ra = routerInfo.getTargetAddress("SSU");
                 if (ra == null && rCtx.router().getUptime() > 5 * 60 * 1000) {
                     if (rCtx.commSystem().countActivePeers() <= 0)
                         return new NetStatus(NetStatus.Level.ERROR, ctx.getString(R.string.net_status_error_no_active_peers));

app/src/main/java/net/i2p/android/router/web/I2PWebViewClient.java

@@ -1,10 +1,12 @@
 package net.i2p.android.router.web;
 
 import android.app.ProgressDialog;
+import android.content.Context;
 import android.content.DialogInterface;
 import android.graphics.Bitmap;
 import android.net.Uri;
 import android.os.AsyncTask;
+import android.support.v4.app.Fragment;
 import android.view.Gravity;
 import android.view.View;
 import android.webkit.HttpAuthHandler;
@@ -26,9 +28,11 @@ import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
+import java.util.Locale;
 
 public class I2PWebViewClient extends WebViewClient {
 
+    private final Fragment _parentFrag;
     private BGLoad _lastTask;
     /** save it here so we can dismiss it in onPageFinished() */
     private ProgressDialog _lastDialog;
@@ -40,6 +44,11 @@ public class I2PWebViewClient extends WebViewClient {
     private static final String ERROR_URL = "<p>Unable to load URL: ";
     private static final String ERROR_ROUTER = "<p>Your router (or the HTTP proxy) does not appear to be running.</p>";
 
+    public I2PWebViewClient(Fragment parentFrag) {
+        super();
+        _parentFrag = parentFrag;
+    }
+
     @Override
     public boolean shouldOverrideUrlLoading(WebView view, String url) {
         Util.d("Should override? " + url);
@@ -68,7 +77,7 @@ public class I2PWebViewClient extends WebViewClient {
                 fail(view, "Bad URL " + url);
                 return true;
             }
-            s = s.toLowerCase();
+            s = s.toLowerCase(Locale.US);
             if (!(s.equals("http") || s.equals("https") ||
                   s.equals(CONTENT))) {
                 Util.d("Not loading URL " + url);
@@ -85,7 +94,7 @@ public class I2PWebViewClient extends WebViewClient {
                 return true;
             }
 
-            h = h.toLowerCase();
+            h = h.toLowerCase(Locale.US);
             if (h.endsWith(".i2p")) {
                 if (!s.equals("http")) {
                     fail(view, "Bad URL " + url);
@@ -102,7 +111,7 @@ public class I2PWebViewClient extends WebViewClient {
                 ///////// API 8
                 // Otherwise hangs waiting for CSS
                 view.getSettings().setBlockNetworkLoads(false);
-                _lastDialog = new ProgressDialog(view.getContext());
+                _lastDialog = new ProgressDialog(_parentFrag.getContext());
                 BGLoad task = new BackgroundEepLoad(view, h, _lastDialog);
                 _lastTask = task;
                 task.execute(url);
@@ -203,7 +212,8 @@ public class I2PWebViewClient extends WebViewClient {
                 //reverse back to a i2p URI so we can delete it from the AppCache
                 uri = CacheProvider.getI2PUri(uri);
                 Util.d("clearing AppCache entry for current page " + uri);
-                AppCache.getInstance(view.getContext()).removeCacheFile(uri);
+                Context ctx = view.getContext();
+                AppCache.getInstance(ctx).removeCacheFile(ctx, uri);
             } catch (FileNotFoundException fnfe) {
                 // this actually only deletes the row in the provider,
                 // not the actual file, but it will be overwritten in the reload.
@@ -215,10 +225,12 @@ public class I2PWebViewClient extends WebViewClient {
 
     private abstract static class BGLoad extends AsyncTask<String, Integer, Integer> implements DialogInterface.OnCancelListener {
         protected final WebView _view;
+        protected final Context _ctx;
         protected final ProgressDialog _dialog;
 
         public BGLoad(WebView view, ProgressDialog dialog) {
             _view = view;
+            _ctx = view.getContext();
             if (dialog != null)
                 dialog.setCancelable(true);
             _dialog = dialog;
@@ -305,9 +317,10 @@ public class I2PWebViewClient extends WebViewClient {
         protected Integer doInBackground(String... urls) {
             final String url = urls[0];
             Uri uri = Uri.parse(url);
-            File cacheFile = AppCache.getInstance(_view.getContext()).getCacheFile(uri);
+            final AppCache cache = AppCache.getInstance(_ctx);
+            File cacheFile = cache.getCacheFile(uri);
             if (cacheFile.exists()) {
-                final Uri resUri = AppCache.getInstance(_view.getContext()).getCacheUri(uri);
+                final Uri resUri = cache.getCacheUri(_ctx, uri);
                 Util.d("Loading " + url + " from resource cache " + resUri);
                 _view.post(new Runnable() {
                     @Override
@@ -325,7 +338,7 @@ public class I2PWebViewClient extends WebViewClient {
             //EepGetFetcher fetcher = new EepGetFetcher(url);
             OutputStream out = null;
             try {
-                out = AppCache.getInstance(_view.getContext()).createCacheFile(uri);
+                out = cache.createCacheFile(_ctx, uri);
                 // write error to stream
                 EepGetFetcher fetcher = new EepGetFetcher(url, out, true);
                 fetcher.addStatusListener(this);
@@ -338,11 +351,11 @@ public class I2PWebViewClient extends WebViewClient {
                 if (success) {
                     // store in cache, get content URL, and load that way
                     // Set as current base
-                    final Uri content = AppCache.getInstance(_view.getContext()).addCacheFile(uri, true);
+                    final Uri content = cache.addCacheFile(_ctx, uri, true);
                     if (content != null) {
                         Util.d("Stored cache in " + content);
                     } else {
-                        AppCache.getInstance(_view.getContext()).removeCacheFile(uri);
+                        cache.removeCacheFile(_ctx, uri);
                         Util.d("cache create error");
                         return 0;
                     }
@@ -381,7 +394,7 @@ public class I2PWebViewClient extends WebViewClient {
                               if (fis != null) try { fis.close(); } catch (IOException ioe) {}
                         }
                     }
-                    AppCache.getInstance(_view.getContext()).removeCacheFile(uri);
+                    cache.removeCacheFile(_ctx, uri);
                      Util.d("loading error data URL: " + url);
                     final String finalMsg = msg;
                     _view.post(new Runnable() {
@@ -403,30 +416,36 @@ public class I2PWebViewClient extends WebViewClient {
         protected void onProgressUpdate(Integer... progress) {
             if (isCancelled())
                 return;
-            int prog = progress[0];
-            if (prog < 0) {
-                _dialog.setTitle("Contacting...");
-                _dialog.setMessage(_host);
-                _dialog.setIndeterminate(true);
-                _dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
-                _dialog.setOnCancelListener(this);
-                _dialog.show();
-            } else if (prog == 0 && _total > 0) {
-                _dialog.setTitle("Downloading...");
-                _dialog.setMessage("...from " + _host);
-                _dialog.setIndeterminate(false);
-                _dialog.setMax(_total);
-                _dialog.setProgress(0);
-            } else if (_total > 0) {
-                // so it isn't at 100% while loading images and CSS
-                _dialog.setProgress(Math.min(prog, _total * 99 / 100));
-            } else if (prog > 0) {
-                // ugly, need custom
-                _dialog.setTitle("Downloading...");
-                _dialog.setMessage("...from " + _host + ": " + DataHelper.formatSize(prog) + 'B');
-                //_dialog.setProgress(prog);
-            } else {
-                // nothing
+            try {
+                int prog = progress[0];
+                if (prog < 0) {
+                    _dialog.setTitle("Contacting...");
+                    _dialog.setMessage(_host);
+                    _dialog.setIndeterminate(true);
+                    _dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
+                    _dialog.setOnCancelListener(this);
+                    _dialog.show();
+                } else if (prog == 0 && _total > 0) {
+                    _dialog.setTitle("Downloading...");
+                    _dialog.setMessage("...from " + _host);
+                    _dialog.setIndeterminate(false);
+                    _dialog.setMax(_total);
+                    _dialog.setProgress(0);
+                } else if (_total > 0) {
+                    // so it isn't at 100% while loading images and CSS
+                    _dialog.setProgress(Math.min(prog, _total * 99 / 100));
+                } else if (prog > 0) {
+                    // ugly, need custom
+                    _dialog.setTitle("Downloading...");
+                    _dialog.setMessage("...from " + _host + ": " + DataHelper.formatSize(prog) + 'B');
+                    //_dialog.setProgress(prog);
+                } else {
+                    // nothing
+                }
+            } catch (RuntimeException iae) {
+                // throws IAE - not attached to window manager - perhaps due to screen rotation?
+                // Also includes android.view.WindowManager$BadTokenException extends RuntimeException
+                Util.e("Error while updating I2PWebViewClient dialog", iae);
             }
         }
 

app/src/main/java/net/i2p/android/router/web/WebFragment.java

@@ -44,24 +44,26 @@ public class WebFragment extends I2PFragmentBase {
         TextView tv = (TextView) v.findViewById(R.id.browser_status);
         tv.setText(WARNING);
         WebView wv = (WebView) v.findViewById(R.id.browser_webview);
-        _wvClient = new I2PWebViewClient();
+        _wvClient = new I2PWebViewClient(this);
         wv.setWebViewClient(_wvClient);
         wv.getSettings().setBuiltInZoomControls(true);
         // http://stackoverflow.com/questions/2369310/webview-double-tap-zoom-not-working-on-a-motorola-droid-a855
         wv.getSettings().setUseWideViewPort(true);
-        _uriStr =  getArguments().getString(HTML_URI);
-        if (_uriStr != null) {
-            Uri uri = Uri.parse(_uriStr);
-            //wv.getSettings().setLoadsImagesAutomatically(true);
-            //wv.loadUrl(uri.toString());
-            // go thru the client so .i2p will work too
-            _wvClient.shouldOverrideUrlLoading(wv, uri.toString());
-        } else {
-            wv.getSettings().setLoadsImagesAutomatically(false);
-            int id = getArguments().getInt(HTML_RESOURCE_ID, 0);
-            // no default, so restart should keep previous view
-            if (id != 0)
-                loadResource(wv, id);
+        if (getArguments() != null) {
+            _uriStr = getArguments().getString(HTML_URI);
+            if (_uriStr != null) {
+                Uri uri = Uri.parse(_uriStr);
+                //wv.getSettings().setLoadsImagesAutomatically(true);
+                //wv.loadUrl(uri.toString());
+                // go thru the client so .i2p will work too
+                _wvClient.shouldOverrideUrlLoading(wv, uri.toString());
+            } else {
+                wv.getSettings().setLoadsImagesAutomatically(false);
+                int id = getArguments().getInt(HTML_RESOURCE_ID, 0);
+                // no default, so restart should keep previous view
+                if (id != 0)
+                    loadResource(wv, id);
+            }
         }
         return v;
     }

app/src/main/java/net/i2p/android/util/AlphanumericHeaderAdapter.java

@@ -7,6 +7,8 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;
 
+import java.util.Locale;
+
 import com.eowise.recyclerview.stickyheaders.StickyHeadersAdapter;
 
 import net.i2p.android.router.R;
@@ -49,7 +51,7 @@ public class AlphanumericHeaderAdapter implements StickyHeadersAdapter<Alphanume
 
     @Override
     public void onBindViewHolder(ViewHolder headerViewHolder, int position) {
-        String sortString = mAdapter.getSortString(position).toUpperCase();
+        String sortString = mAdapter.getSortString(position).toUpperCase(Locale.getDefault());
         if (sortString.isEmpty())
             headerViewHolder.itemView.setVisibility(View.GONE);
         else {
@@ -63,7 +65,7 @@ public class AlphanumericHeaderAdapter implements StickyHeadersAdapter<Alphanume
 
     @Override
     public long getHeaderId(int position) {
-        String sortString = mAdapter.getSortString(position).toUpperCase();
+        String sortString = mAdapter.getSortString(position).toUpperCase(Locale.getDefault());
         if (sortString.isEmpty())
             return Integer.MAX_VALUE;
 

app/src/main/java/net/i2p/android/util/MemoryFragmentPagerAdapter.java

@@ -3,19 +3,17 @@ package net.i2p.android.util;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentPagerAdapter;
+import android.util.SparseArray;
 import android.view.ViewGroup;
 
-import java.util.HashMap;
-import java.util.Map;
-
 public abstract class MemoryFragmentPagerAdapter extends FragmentPagerAdapter {
-    private FragmentManager mFragmentManager;
-    private Map<Integer, String> mFragmentTags;
+    private final FragmentManager mFragmentManager;
+    private final SparseArray<String> mFragmentTags;
 
     public MemoryFragmentPagerAdapter(FragmentManager fm) {
         super(fm);
         mFragmentManager = fm;
-        mFragmentTags = new HashMap<>();
+        mFragmentTags = new SparseArray<>();
     }
 
     @Override

app/src/main/java/net/i2p/android/wizard/model/AbstractWizardModel.java

@@ -30,10 +30,10 @@ import java.util.List;
  * To create an actual wizard model, extend this class and implement {@link #onNewRootPageList()}.
  */
 public abstract class AbstractWizardModel implements ModelCallbacks {
-    protected Context mContext;
+    protected final Context mContext;
 
-    private List<ModelCallbacks> mListeners = new ArrayList<ModelCallbacks>();
-    private PageList mRootPageList;
+    private final List<ModelCallbacks> mListeners = new ArrayList<ModelCallbacks>();
+    private final PageList mRootPageList;
 
     public AbstractWizardModel(Context context) {
         mContext = context;
@@ -67,7 +67,10 @@ public abstract class AbstractWizardModel implements ModelCallbacks {
 
     public void load(Bundle savedValues) {
         for (String key : savedValues.keySet()) {
-            mRootPageList.findByKey(key).resetData(savedValues.getBundle(key));
+            // Expanded the code to hunt NPE - Ticket #2389
+            Page tmp = mRootPageList.findByKey(key);
+            Bundle tmpBundle = savedValues.getBundle(key);
+            tmp.resetData(tmpBundle);
         }
     }
 

app/src/main/java/net/i2p/android/wizard/model/SingleTextFieldPage.java

@@ -31,6 +31,7 @@ public class SingleTextFieldPage extends Page {
     protected String mDef = null;
     protected String mDesc = "";
     protected boolean mNumeric = false;
+    private String mFeedback;
 
     public SingleTextFieldPage(ModelCallbacks callbacks, String title) {
         super(callbacks, title);
@@ -81,14 +82,24 @@ public class SingleTextFieldPage extends Page {
     // Override these in subclasses to add content verification.
 
     public boolean isValid() {
+        if (mNumeric) {
+            try {
+                //noinspection ResultOfMethodCallIgnored
+                Integer.parseInt(mData.getString(SIMPLE_DATA_KEY));
+            } catch (NumberFormatException e) {
+                mFeedback = "Not a number";
+                return false;
+            }
+        }
+        mFeedback = "";
         return true;
     }
 
     public boolean showFeedback() {
-        return false;
+        return true;
     }
 
     public String getFeedback() {
-        return "";
+        return mFeedback;
     }
 }

app/src/main/java/net/i2p/android/wizard/ui/AbstractWizardActivity.java

@@ -46,8 +46,12 @@ public abstract class AbstractWizardActivity extends FragmentActivity implements
         // Create the WizardModel before super.onCreate() in case a Fragment
         // is created and tries to call e.g. onGetPage()
         mWizardModel = onCreateModel();
-        if (savedInstanceState != null)
-            mWizardModel.load(savedInstanceState.getBundle("model"));
+        if (savedInstanceState != null) {
+            Bundle model = savedInstanceState.getBundle("model");
+            if (model != null) {
+                mWizardModel.load(model);
+            }
+        }
 
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_wizard);

app/src/main/java/net/i2p/android/wizard/ui/I2PB64DestinationFragment.java

@@ -190,6 +190,10 @@ public class I2PB64DestinationFragment extends Fragment {
                     Util.e("Could not find B64 file", fnfe);
                     Toast.makeText(getActivity(), "Could not find B64 file.",
                             Toast.LENGTH_SHORT).show();
+                } catch (SecurityException se) {
+                    Util.e("Could not open B64 file", se);
+                    Toast.makeText(getActivity(), "Could not open B64 file.",
+                            Toast.LENGTH_SHORT).show();
                 } finally {
                     if (br != null)
                         try {