because an effect can be detached immediately after attached (happens in listview), only attach the handler one time.Ĭontainer.LongClick += Control_LongClick / Empty constructor required for the odd Xamarin.Forms reflection constructor search Public class AndroidLongPressedEffect : PlatformEffect We can use these in our native Effect implementations to invoke when the press is detected. Now we have 2 bindable properties – the Command that we want to bind when the long press is detected and the CommandParameter to pass into the Command. View.SetValue(CommandParameterProperty, value) Public static void SetCommandParameter(BindableObject view, object value) Return view.GetValue(CommandParameterProperty) Public static object GetCommandParameter(BindableObject view) Public static readonly BindableProperty CommandParameterProperty = BindableProperty.CreateAttached("CommandParameter", typeof(object), typeof(LongPressedEffect), (object)null) Public static void SetCommand(BindableObject view, ICommand value) Return (ICommand)view.GetValue(CommandProperty) Public static ICommand GetCommand(BindableObject view) Public static readonly BindableProperty CommandProperty = BindableProperty.CreateAttached("Command", typeof(ICommand), typeof(LongPressedEffect), (object)null) Public LongPressedEffect() : base("MyApp.LongPressedEffect") Public class LongPressedEffect : RoutingEffect Used for invoking commands on long press detection cross platform Let’s first create our shared Effect in our shared code: Luckily the solution is pretty simple using Xamarin.Forms Effects! Here’s a quick and helpful tool to use in your Xamarin.Forms applications! How many times have you wanted to add a long press handler? Seems like something that should be a simple Gesture built into the platform, but we have to fend for ourselves. Meadow.Tip – Playing Jingle Bells with a Piezo Speaker Using C#.Xamarin.Tip – Fixing Missing iOS App Icons.Xamarin.Tip – iOS Push Notification Device Token Extraction in iOS 13+.
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