private void OnLocatorStatusChanged(Geolocator sender, StatusChangedEventArgs e)
{
GeolocationException geolocationException;
switch (e.Status)
{
case PositionStatus.Disabled:
geolocationException = new GeolocationUnauthorizedException();
break;
case PositionStatus.NoData:
geolocationException = new GeolocationPositionUnavailableException();
break;
default:
return;
}
if (this.IsListening)
{
this.StopListening();
this.OnPositionError(new PositionErrorEventArgs(geolocationException));
}
this.locator = null;
}
private void WatcherOnStatusChanged(object sender, GeoPositionStatusChangedEventArgs e)
{
this.isEnabled = (this.watcher.Permission == GeoPositionPermission.Granted && this.watcher.Status != GeoPositionStatus.Disabled);
GeolocationException geolocationException;
switch (e.Status)
{
case GeoPositionStatus.Disabled:
geolocationException = new GeolocationUnauthorizedException();
break;
case GeoPositionStatus.NoData:
geolocationException = new GeolocationPositionUnavailableException();
break;
default:
return;
}
this.StopListening();
var perror = this.PositionError;
if (perror != null)
{
perror(this, new PositionErrorEventArgs(geolocationException));
}
}
/// <inheritdoc />
public Task <Position> GetPositionAsync(int timeoutMilliseconds = Timeout.Infinite, CancellationToken?token = null, bool includeHeading = false)
{
if (timeoutMilliseconds < 0 && timeoutMilliseconds != Timeout.Infinite)
{
throw new ArgumentOutOfRangeException("timeoutMilliseconds");
}
if (!token.HasValue)
{
token = CancellationToken.None;
}
IAsyncOperation <Geoposition> pos = this.GetGeolocator().GetGeopositionAsync(TimeSpan.FromTicks(0), TimeSpan.FromDays(365));
token.Value.Register(o => ((IAsyncOperation <Geoposition>)o).Cancel(), pos);
var timer = new Timeout(timeoutMilliseconds, pos.Cancel);
var tcs = new TaskCompletionSource <Position>();
pos.Completed = (op, s) =>
{
timer.Cancel();
switch (s)
{
case AsyncStatus.Canceled:
tcs.SetCanceled();
break;
case AsyncStatus.Completed:
tcs.SetResult(GetPosition(op.GetResults()));
break;
case AsyncStatus.Error:
Exception ex = op.ErrorCode;
if (ex is UnauthorizedAccessException)
{
ex = new GeolocationUnauthorizedException(ex);
}
tcs.SetException(ex);
break;
}
};
return(tcs.Task);
}