/// <summary>
/// Start listening to location changes
/// </summary>
/// <param name="minTime">Minimum interval in milliseconds</param>
/// <param name="minDistance">Minimum distance in meters</param>
/// <param name="includeHeading">Include heading information</param>
/// <exception cref="System.ArgumentOutOfRangeException">
/// minTime
/// or
/// minDistance
/// </exception>
/// <exception cref="System.InvalidOperationException">This Geolocator is already listening</exception>
public OperationResult StartListening(uint minTime, double minDistance, double desiredAccurancy = 0, bool includeHeading = false)
{
if (IsListening)
{
return(OperationResult.AsFailure("Already listening"));
}
if (minTime < 0)
{
return(OperationResult.AsFailure(new ArgumentOutOfRangeException(nameof(minTime))));
}
if (minDistance < 0)
{
return(OperationResult.AsFailure(new ArgumentOutOfRangeException(nameof(minDistance))));
}
_desiredAccuracy = desiredAccurancy;
_listener = new GeolocationContinuousListener(_manager, TimeSpan.FromMilliseconds(minTime), _providers);
_listener.PositionChanged += OnListenerPositionChanged;
_listener.PositionError += OnListenerPositionError;
var looper = Looper.MyLooper() ?? Looper.MainLooper;
for (var i = 0; i < _providers.Length; ++i)
{
_manager.RequestLocationUpdates(_providers[i], minTime, (float)minDistance, _listener, looper);
}
return(OperationResult.AsSuccess());
}
public void StopListening()
{
if (_listener == null)
{
return;
}
_listener.PositionChanged -= OnListenerPositionChanged;
_listener.PositionError -= OnListenerPositionError;
for (var i = 0; i < _providers.Length; ++i)
{
_manager.RemoveUpdates(_listener);
}
_listener = null;
}
public OperationResult StopListening()
{
if (!IsListening)
{
return(OperationResult.AsFailure("Location updates already stopped"));
}
_listener.PositionChanged -= OnListenerPositionChanged;
_listener.PositionError -= OnListenerPositionError;
for (var i = 0; i < _providers.Length; ++i)
{
_manager.RemoveUpdates(_listener);
}
_listener = null;
return(OperationResult.AsSuccess());
}
