Xamarin Essentials Permissions.RequestAsync does not return - xamarin

Question

When calling Permissions.RequestAsync<Permissions.LocationWhenInUse>() I do not get any result and the App is getting stuck. No matter, if the user accepts or denies the request.
I've set up MainActivity as described in the documentation:
public override void OnRequestPermissionsResult(int requestCode, string[] permissions, [GeneratedEnum] Permission[] grantResults)
{
Xamarin.Essentials.Platform.OnRequestPermissionsResult(requestCode, permissions, grantResults);
base.OnRequestPermissionsResult(requestCode, permissions, grantResults);
}
Now I'm trying to get the permissions the following way. But the RequestAsync call is just getting stuck and I never recieve an answer. Once the permission is granted and the app is being restarted, everything works as expected.
public async Task CheckPermissions()
{
var status = await Permissions.CheckStatusAsync<Permissions.LocationWhenInUse>();
if (status != PermissionStatus.Granted)
{
status = await Permissions.RequestAsync<Permissions.LocationWhenInUse>();
}
if (status == PermissionStatus.Granted)
{
HasLocationPermissions = true;
}
else if (status != PermissionStatus.Unknown)
{
HasLocationPermissions = false;
}
}

Answer 1

A synchronous blocking call further up your call stack can cause this; e.g., .Wait(), .Result, or .GetAwaiter().GetResult(). This is the classic deadlock situation described on my blog.
Since you are writing a Xamarin application, you may find this technique helpful - it's a way to start an asynchronous operation (synchronously), show a "loading..." state, and then update when the asynchronous operation completes.