Support for ShortcutBadger

// FREEBIE

Closes #1574
Closes #1952

Fixes #1526
Fixes #321

build.gradle

@@ -27,9 +27,13 @@ repositories {
     maven {
         url "https://raw.github.com/whispersystems/maven/master/smil/releases/"
     }
+    maven {
+        url "https://raw.github.com/whispersystems/maven/master/shortcutbadger/releases/"
+    }
 }
 
 dependencies {
+    compile 'me.leolin:ShortcutBadger:1.0.2'
     compile 'se.emilsjolander:stickylistheaders:2.2.0'
     compile 'com.google.android.gms:play-services:6.1.71'
     compile 'com.astuetz:pagerslidingtabstrip:1.0.1'
@@ -57,6 +61,7 @@ dependencies {
 
 dependencyVerification {
     verify = [
+            'me.leolin:ShortcutBadger:8fa86a47712d785f01a33dd157ae07209973224061bc1cf2f1cd1715585d196a',
             'se.emilsjolander:stickylistheaders:89146b46c96fea0e40200474a2625cda10fe94891e4128f53cdb42375091b9b6',
             'com.google.android.gms:play-services:32e7d1834a1cf8fa4b17e8d359db580c286e26c1eefbf84fdb9996eac8d74919',
             'com.astuetz:pagerslidingtabstrip:f1641396732c7132a7abb837e482e5ee2b0ebb8d10813fc52bbaec2c15c184c2',

src/org/thoughtcrime/securesms/notifications/MessageNotifier.java

@@ -56,6 +56,9 @@ import java.io.IOException;
 import java.util.List;
 import java.util.ListIterator;
 
+import me.leolin.shortcutbadger.ShortcutBadgeException;
+import me.leolin.shortcutbadger.ShortcutBadger;
+
 /**
  * Handles posting system notifications for new messages.
  *
@@ -134,6 +137,7 @@ public class MessageNotifier {
       {
         ((NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE))
           .cancel(NOTIFICATION_ID);
+        updateBadge(context, 0);
         return;
       }
 
@@ -146,6 +150,8 @@ public class MessageNotifier {
       } else {
         sendSingleThreadNotification(context, masterSecret, notificationState, signal);
       }
+
+      updateBadge(context, notificationState.getMessageCount());
     } finally {
       if (telcoCursor != null) telcoCursor.close();
       if (pushCursor != null)  pushCursor.close();
@@ -384,4 +390,14 @@ public class MessageNotifier {
 
     return blinkPattern.split(",");
   }
+
+  private static void updateBadge(Context context, int count) {
+    try {
+      ShortcutBadger.setBadge(context, count);
+    } catch (Throwable t) {
+      // NOTE :: I don't totally trust this thing, so I'm catching
+      // everything.
+      Log.w("MessageNotifier", t);
+    }
+  }
 }