/// <summary>
/// Displays Place Picker UI.
/// </summary>
/// <param name="bounds"></param>
/// <returns></returns>
public Task <Places> Display(Abstractions.CoordinateBounds bounds = null)
{
currentRequest = GetRequestId();
var ntcs = new TaskCompletionSource <Places>(currentRequest);
if (Interlocked.CompareExchange(ref this.completionSource, ntcs, null) != null)
{
throw new InvalidOperationException("Only one operation can be active at a time");
}
Google.Maps.CoordinateBounds iosBound;
PlacePickerConfig config;
if (bounds != null)
{
var northEast = new CLLocationCoordinate2D(bounds.Northeast.Latitude, bounds.Northeast.Longitude);
var southwest = new CLLocationCoordinate2D(bounds.Southwest.Latitude, bounds.Southwest.Longitude);
iosBound = new Google.Maps.CoordinateBounds(northEast, southwest);
config = new PlacePickerConfig(iosBound);
}
else
{
config = new PlacePickerConfig(null);
}
picker = new PlacePicker(config);
picker.PickPlaceWithCallback(PlacePickedCallBack);
EventHandler <PlacePickedEventArgs> handler = null;
handler = (s, e) =>
{
var tcs = Interlocked.Exchange(ref this.completionSource, null);
PlacePicked -= handler;
if (e.RequestId != currentRequest)
{
return;
}
if (e.IsCanceled)
{
tcs.SetResult(null);
}
else if (e.Error != null)
{
tcs.SetException(e.Error);
}
else
{
tcs.SetResult(e.Places);
}
};
PlacePicked += handler;
return(completionSource.Task);
}
/// <summary>
/// Displays Place Picker UI.
/// </summary>
/// <param name="bounds"></param>
/// <returns></returns>
///
public Task <Places> Display(Abstractions.CoordinateBounds bounds = null)
{
UIViewController CurrentController = null;
UIWindow window = UIApplication.SharedApplication.KeyWindow;
if (window == null)
{
throw new InvalidOperationException("There's no current active window");
}
if (window.WindowLevel == UIWindowLevel.Normal)
{
CurrentController = window.RootViewController;
}
if (CurrentController == null)
{
window = UIApplication.SharedApplication.Windows.OrderByDescending(w => w.WindowLevel).FirstOrDefault(w => w.RootViewController != null && w.WindowLevel == UIWindowLevel.Normal);
if (window == null)
{
throw new InvalidOperationException("Could not find current view controller");
}
else
{
CurrentController = window.RootViewController;
}
}
while (CurrentController.PresentedViewController != null)
{
CurrentController = CurrentController.PresentedViewController;
}
currentRequest = GetRequestId();
var ntcs = new TaskCompletionSource <Places>(currentRequest);
if (Interlocked.CompareExchange(ref this.completionSource, ntcs, null) != null)
{
throw new InvalidOperationException("Only one operation can be active at a time");
}
Google.Maps.CoordinateBounds iosBound;
PlacePickerConfig config;
if (bounds != null)
{
var northEast = new CLLocationCoordinate2D(bounds.Northeast.Latitude, bounds.Northeast.Longitude);
var southwest = new CLLocationCoordinate2D(bounds.Southwest.Latitude, bounds.Southwest.Longitude);
iosBound = new Google.Maps.CoordinateBounds(northEast, southwest);
config = new PlacePickerConfig(iosBound);
}
else
{
config = new PlacePickerConfig(null);
}
PlacePickerController controller = new PlacePickerController(config, currentRequest);
CurrentController.PresentViewController(controller, true, null);
EventHandler <PlacePickedEventArgs> handler = null;
handler = (s, e) =>
{
var tcs = Interlocked.Exchange(ref this.completionSource, null);
PlacePickerController.PlacePicked -= handler;
CurrentController.DismissViewController(false, null);
if (e.RequestId != currentRequest)
{
return;
}
if (e.IsCanceled)
{
tcs.SetResult(null);
}
else if (e.Error != null)
{
tcs.SetException(e.Error);
}
else
{
tcs.SetResult(e.Places);
}
};
PlacePickerController.PlacePicked += handler;
return(completionSource.Task);
}
