Xam.Plugin.Geolocator iOS app crashes if user rejects location permissions - xamarin

Question

I am currently on version 4.2.0 of the Geolocator Plugin.
Upon installing the app, the following prompt appears:
However, if the user selects Don't Allow, the app crashes with the following error:
Plugin.Geolocator.Abstractions.GeolocationException: A geolocation error occured: Unauthorized
at Plugin.Geolocator.GeolocatorImplementation+<StartListeningAsync>d__33.MoveNext () [0x000eb] in <51c894f634a24ed2b17b19807ba0f99e>:0
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <cf9013b38a4e4129bd64785080dd2844>:0
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0003e] in <cf9013b38a4e4129bd64785080dd2844>:0
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <cf9013b38a4e4129bd64785080dd2844>:0
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <cf9013b38a4e4129bd64785080dd2844>:0
at System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () [0x00000] in <cf9013b38a4e4129bd64785080dd2844>:0
at Divco.App+<StartListening>d__11.MoveNext () [0x000b5] in <a1469ede5dd148df922c3455ac848705>:0
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <cf9013b38a4e4129bd64785080dd2844>:0
at System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.<ThrowAsync>b__6_0 (System.Object state) [0x00000] in <cf9013b38a4e4129bd64785080dd2844>:0
at UIKit.UIKitSynchronizationContext+<Post>c__AnonStorey0.<>m__0 () [0x00000] in <b7935acd70e343049845d6fd73e5ec44>:0
at Foundation.NSAsyncActionDispatcher.Apply () [0x00000] in <b7935acd70e343049845d6fd73e5ec44>:0
--- End of stack trace from previous location where exception was thrown ---
It continues to throw this error when you reopen the app.
I have included my code for App.xaml.cs to see if I am missing a piece. I followed the tutorial on the Geolocator plugin site linked previously.
App.xaml.cs
async void StartListening()
{
if (CrossGeolocator.Current.IsListening)
return;
CrossGeolocator.Current.DesiredAccuracy = 10;
await CrossGeolocator.Current.StartListeningAsync(TimeSpan.FromSeconds(Settings.PingDurationSeconds), 1, true, new Plugin.Geolocator.Abstractions.ListenerSettings
{
AllowBackgroundUpdates = true,
PauseLocationUpdatesAutomatically = false
});
CrossGeolocator.Current.PositionChanged += PositionChanged;
CrossGeolocator.Current.PositionError += PositionError;
}
async void PositionChanged(object sender, PositionEventArgs e)
{
//If updating the UI, ensure you invoke on main thread
var position = e.Position;
if (!Settings.IsLoggedIn)
return;
else if (Settings.IsAuthExpired)
await loginStore.Refresh();
var output = "Full: Lat: " + $"{position.Latitude}" + " Long: " + $"{position.Longitude}";
output += "\n" + $"Time: {position.Timestamp}";
output += "\n" + $"Heading: {position.Heading}";
output += "\n" + $"Speed: {position.Speed}";
output += "\n" + $"Accuracy: {position.Accuracy}";
output += "\n" + $"Altitude: {position.Altitude}";
output += "\n" + $"Altitude Accuracy: {position.AltitudeAccuracy}";
Settings.CurrentPosition = position;
await dataStore.UpdateLocation(position.Latitude, position.Longitude);
Debug.WriteLine(output);
}
private void PositionError(object sender, PositionErrorEventArgs e)
{
Debug.WriteLine(e.Error);
//Handle event here for errors
}
async void StopListening()
{
if (!CrossGeolocator.Current.IsListening)
return;
await CrossGeolocator.Current.StopListeningAsync();
CrossGeolocator.Current.PositionChanged -= PositionChanged;
CrossGeolocator.Current.PositionError -= PositionError;
}
Ideally, I would like to alert the user that they must enable location tracking to use our app (as it is a major part of our service).