public Task <IBitmap> LoadFromResource(string source, float?desiredWidth, float?desiredHeight)
{
var tcs = new TaskCompletionSource <IBitmap>();
UIApplication.SharedApplication.InvokeOnMainThread(() => {
try {
#if UIKIT
tcs.TrySetResult(new CocoaBitmap(UIImage.FromBundle(source)));
#else
tcs.TrySetResult(new CocoaBitmap(UIImage.ImageNamed(source)));
#endif
} catch (Exception ex) {
tcs.TrySetException(ex);
}
});
return(tcs.Task);
}