Clean up read notifications

app/src/main/java/chat/rocket/android/activity/AbstractAuthedActivity.java

@@ -10,6 +10,7 @@ import chat.rocket.android.RocketChatCache;
 import chat.rocket.android.model.ServerConfig;
 import chat.rocket.android.model.ddp.RoomSubscription;
 import chat.rocket.android.push.PushConstants;
+import chat.rocket.android.push.PushNotificationHandler;
 import chat.rocket.android.realm_helper.RealmListObserver;
 import chat.rocket.android.realm_helper.RealmStore;
 import chat.rocket.android.service.RocketChatService;
@@ -64,6 +65,11 @@ abstract class AbstractAuthedActivity extends AbstractFragmentActivity {
         editor.putString(RocketChatCache.KEY_SELECTED_ROOM_ID,
             intent.getStringExtra(PushConstants.ROOM_ID));
       }
+
+      if (intent.hasExtra(PushConstants.NOT_ID)) {
+        PushNotificationHandler
+            .cleanUpNotificationStack(intent.getIntExtra(PushConstants.NOT_ID, 0));
+      }
       editor.apply();
     }
   }

app/src/main/java/chat/rocket/android/push/PushNotificationHandler.java

@@ -42,7 +42,11 @@ public class PushNotificationHandler implements PushConstants {
 
   private Random random = new Random();
 
-  public void setNotification(int notId, String message) {
+  public static synchronized void cleanUpNotificationStack(int notId) {
+    messageMap.remove(notId);
+  }
+
+  private synchronized void setNotification(int notId, String message) {
     ArrayList<String> messageList = messageMap.get(notId);
     if (messageList == null) {
       messageList = new ArrayList<>();
@@ -56,6 +60,10 @@ public class PushNotificationHandler implements PushConstants {
     }
   }
 
+  private synchronized ArrayList<String> getMessageList(int notId) {
+    return messageMap.get(notId);
+  }
+
   public void showNotificationIfPossible(Context context, PushInteractor pushInteractor,
                                          Bundle extras) {
 
@@ -369,7 +377,7 @@ public class PushNotificationHandler implements PushConstants {
 
       mBuilder.setContentText(fromHtml(message));
 
-      ArrayList<String> messageList = messageMap.get(notId);
+      ArrayList<String> messageList = getMessageList(notId);
       Integer sizeList = messageList.size();
       if (sizeList > 1) {
         String sizeListMessage = sizeList.toString();