[flutter-messaging] fix notifications disappearing after app launch (f…

…irebase#227)

* fix notifications disappearing after app launch

packages/firebase_messaging/CHANGELOG.md

@@ -1,5 +1,9 @@
 ## 6.0.16
 
+* Fix push notifications clearing after app launch on iOS.
+
+## 6.0.16
+
 * Update lower bound of dart dependency to 2.0.0.
 
 ## 6.0.15
@@ -31,7 +35,7 @@
 
 ## 6.0.10
 
-* Update README to explain how to correctly implement Android background message handling with the new v2 embedding. 
+* Update README to explain how to correctly implement Android background message handling with the new v2 embedding.
 
 ## 6.0.9
 
@@ -155,7 +159,7 @@ is not a top-level or static function.
 * Add missing template type parameter to `invokeMethod` calls.
 * Bump minimum Flutter version to 1.5.0.
 * Replace invokeMethod with invokeMapMethod wherever necessary.
- 
+
 ## 5.0.1+1
 
 * Enable support for `onMessage` on iOS using `shouldEstablishDirectChannel`.

packages/firebase_messaging/ios/Classes/FLTFirebaseMessagingPlugin.m

@@ -249,20 +249,8 @@ - (void)applicationDidEnterBackground:(UIApplication *)application {
 
 - (void)applicationDidBecomeActive:(UIApplication *)application {
   _resumingFromBackground = NO;
-  // Clears push notifications from the notification center, with the
-  // side effect of resetting the badge count. We need to clear notifications
-  // because otherwise the user could tap notifications in the notification
-  // center while the app is in the foreground, and we wouldn't be able to
-  // distinguish that case from the case where a message came in and the
-  // user dismissed the notification center without tapping anything.
-  // TODO(goderbauer): Revisit this behavior once we provide an API for managing
-  // the badge number, or if we add support for running Dart in the background.
-  // Setting badgeNumber to 0 is a no-op (= notifications will not be cleared)
-  // if it is already 0,
-  // therefore the next line is setting it to 1 first before clearing it again
-  // to remove all
-  // notifications.
-  application.applicationIconBadgeNumber = 1;
+  // Removes badge number but doesn't clear push notifications,
+  // helpful when you have valuable info in your push notification
   application.applicationIconBadgeNumber = 0;
 }