public Explanation() { InitializeComponent(); BindingContext = this; var tgr = new TapGestureRecognizer(); tgr.Tapped += (s, e) => { Clicked?.Invoke(this, e); }; GestureRecognizers.Add(tgr); Back.Opacity = 0; Back.ScaleTo(0.1, 0); Device.BeginInvokeOnMainThread(() => { Back.ScaleTo(10, 350); Back.FadeTo(0.5, 350).ContinueWith((arg) => { Device.BeginInvokeOnMainThread(() => { Discription.IsVisible = true; }); }); }); }