Change launchmode of GameActivityto 'singleTask' and add onNewIntent method to GameActivity

app/src/main/AndroidManifest.xml

@@ -42,6 +42,7 @@
         <activity
             android:name="org.secuso.privacyfriendlysudoku.ui.GameActivity"
             android:label="@string/title_activity_game_view"
+            android:launchMode="singleTask"
             android:theme="@style/AppTheme.NoActionBar">
 
             <intent-filter >

app/src/main/java/org/secuso/privacyfriendlysudoku/ui/GameActivity.java

@@ -298,6 +298,14 @@ public class GameActivity extends BaseActivity implements NavigationView.OnNavig
         }
         gameController.deleteTimer();
     }
+
+    @Override
+    public void onNewIntent(Intent intent) {
+        super.onNewIntent(intent);
+        startActivity(intent);
+        finish();
+    }
+
     @Override
     public void onResume(){
         super.onResume();