/// <summary>
/// Requests a single GPS reading by starting the listener and stopping once a reading is received
/// Requests a single GPS reading - This will start & stop the gps listener if wasn't running already
/// </summary>
/// <param name="gpsManager"></param>
/// <returns></returns>
public static IObservable <IGpsReading> GetCurrentPosition(this IGpsManager gpsManager) => Observable.FromAsync(async ct =>
{
var iStarted = false;
try
{
await currentLocSemaphore
.WaitAsync(ct)
.ConfigureAwait(false);
var task = gpsManager
.WhenReading()
.Take(1)
.ToTask(ct);
if (!gpsManager.IsListening())
{
iStarted = true;
await gpsManager
.StartListener(GpsRequest.Foreground)
.ConfigureAwait(false);
}
var reading = await task.ConfigureAwait(false);
return(reading);
}
finally
{
currentLocSemaphore.Release();
if (iStarted)
{
await gpsManager.StopListener().ConfigureAwait(false);
}
}
});