protected async override void OnElementChanged(ElementChangedEventArgs <Swiper> e)
{
base.OnElementChanged(e);
if (this.Element == null)
{
return;
}
_leftImageView = CreateImageView();
_rightImageView = CreateImageView();
_centerImageView = CreateImageView();
_centerImageView.UserInteractionEnabled = true;
_centerImageView.AddGestureRecognizer(new UIPanGestureRecognizer(OnPan));
_centerImageView.AddGestureRecognizer(new UITapGestureRecognizer(OnTapped));
UpdateSizes();
_rootView = new UIView();
_rootView.ContentMode = UIViewContentMode.ScaleAspectFit;
_rootView.AddSubview(_centerImageView);
_rootView.AddSubview(_leftImageView);
_rootView.AddSubview(_rightImageView);
this.SetNativeControl(_rootView);
if (this.Element.Width > 0 && this.Element.Height > 0)
{
await InitializeImagesAsync();
}
}
private async Task LoadImage(AsyncUIImageView view, string url)
{
view.Image = null;
if (!IsInCache(url))
{
view.IsLoading();
}
view.Image = await ResolveImageAsync(url);
view.IsLoaded();
}