Android Runtime Exception

[johng1492]

Describe the bug When trying to start location service, in foreground, on Android, I get the error: Bad notification posted from package com.xxx.xxxxxxx: Couldn't create icon: StatusBarIcon(.

The issue is on starting the service and I have tried for hours on what the issue is. I think it's a NULL that I'm passing someplace that is expecting a value.

To Reproduce Steps to reproduce the behavior:

1. Call: MessagingCenter.Send(message, "ServiceStarted"); from FORMS

2. Here is the method (same as your sample): MessagingCenter.Subscribe(this, "ServiceStarted", message => { if (!IsServiceRunning(typeof(AndroidLocationService))) { if (Android.OS.Build.VERSION.SdkInt >= Android.OS.BuildVersionCodes.O) { StartForegroundService(serviceIntent); } else { StartService(serviceIntent); } } });

3. Here is the LocationService StartCommand: public override StartCommandResult OnStartCommand(Intent intent, StartCommandFlags flags, int startId) { _cts = new CancellationTokenSource();

       Notification notif = DependencyService.Get<INotification>().ReturnNotif();
       StartForeground(SERVICE_RUNNING_NOTIFICATION_ID, notif);
   
       Task.Run(() => {
           try
           {
               var locShared = new Location();
               locShared.Run(_cts.Token).Wait();
           }
           catch (OperationCanceledException)
           {
           }
           finally
           {
               if (_cts.IsCancellationRequested)
               {
                   var message = new StopServiceMessage();
                   Device.BeginInvokeOnMainThread(
                       () => MessagingCenter.Send(message, "ServiceStopped")
                   );
               }
           }
       }, _cts.Token);
   
       return StartCommandResult.Sticky;
   }

4. It seems like it bombs on: locShared.Run(_cts.Token).Wait(); above.

Expected behavior To start the location service and track the user's location

Smartphone (please complete the following information):

• Device: Old Samsung Device
• OS: Android

[shernandezp]

I understand you are getting an error based on a change you made to the original code, the current code does not throw any kind of error. I suggest you go throw the documentation of Messaging Center: https://docs.microsoft.com/en-us/xamarin/xamarin-forms/app-fundamentals/messaging-center