fix NPE in SettingsFrame

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/SCNApp.java

@@ -99,4 +99,6 @@ public class SCNApp extends Application implements LifecycleObserver
     }
 }
 
-//TODO TabLayout indicator does not corretly animate when directly clicking on tabs
+//TODO TabLayout indicator does not correctly animate when directly clicking on tabs
+//TODO Vibrate is a single long and not two short ?
+//TODO Crash (see report)

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/view/NotificationsFragment.java

@@ -77,4 +77,9 @@ public class NotificationsFragment extends Fragment implements MessageAdapterTou
             snackbar.show();
         }
     }
+
+    public void updateDeleteSwipeEnabled()
+    {
+        if (touchHelper != null) touchHelper.updateEnabled();
+    }
 }

android/app/src/main/java/com/blackforestbytes/simplecloudnotifier/view/SettingsFragment.java

@@ -341,7 +341,7 @@ public class SettingsFragment extends Fragment implements MusicPickerListener
     {
         SCNSettings.inst().save();
         updateUI();
-        SCNApp.getMainActivity().adpTabs.tab1.touchHelper.updateEnabled();
+        SCNApp.getMainActivity().adpTabs.tab1.updateDeleteSwipeEnabled();
     }
 
     private void onUpgradeAccount()