Cleanup notification if not shown in foreground to report status correctly

Author: aurimasc

com.unity.mobile.notifications/Runtime/Android/Plugins/com/unity/androidnotifications/UnityNotificationManager.java

@@ -643,13 +643,24 @@ public void onReceive(Context context, Intent intent) {
     // Call the system notification service to notify the notification.
     protected static void notify(Context context, int id, Notification notification) {
         boolean showInForeground = notification.extras.getBoolean(KEY_SHOW_IN_FOREGROUND, true);
+        boolean didShowNotification = false;
         if (!isInForeground() || showInForeground) {
+            didShowNotification = true;
             getNotificationManager(context).notify(id, notification);
             if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) synchronized (UnityNotificationManager.class) {
                 mVisibleNotifications.add(Integer.valueOf(id));
             }
         }
 
+        if (!didShowNotification) {
+            // if notification is not shown and not repeating, cleanup so it's status does not show as scheduled
+            long repeatInterval = notification.extras.getLong(KEY_REPEAT_INTERVAL, -1);
+            if (repeatInterval <= 0) {
+                removeScheduledNotification(id);
+                deleteExpiredNotificationIntent(context, String.valueOf(id));
+            }
+        }
+
         try {
             mNotificationCallback.onSentNotification(notification);
         } catch (RuntimeException ex) {