Awesome

New version for MAUI here: https://github.com/vapolia/MauiGestures/

Below is version for Xamarin.Forms

Supported Platforms

iOS, Android, UWP

Xamarin Form Gesture Effects

Add "advanced" gestures to Xamarin Forms. Available on all views. Most gesture commands include the event position.

    <Label Text="Click here" IsEnabled="True" ui:Gesture.TapCommand="{Binding OpenLinkCommand}" />

Or in code:

    var label = new Label();
    Vapolia.Lib.Ui.Gesture.SetTapCommand(label, new Command(() => { /*your code*/ }));

Quick start

Add the above nuget package to your Xamarin Forms project (only the netstandard one is enough).

In your platform projects (android,ios,uwp), before initializing xamarin forms, call Vapolia.Lib.Effects.PlatformGestureEffect.Init(); to force the discovery of this extension by the Xamarin Forms plugin engine.

The views on which the gesture is applied should have the property IsEnabled="True" and InputTransparent="False" which activates user interaction on them.

Examples

Add Gesture.TapCommand on any supported xaml view:

        <StackLayout ui:Gesture.TapCommand="{Binding OpenLinkCommand}">
            <Label Text="1.Tap this to open an url"  />
        </StackLayout>

Declare the corresponding namespace:

    <ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             ...
             xmlns:ui="clr-namespace:Vapolia.Lib.Ui;assembly=XamarinFormsGesture"
    >

And in the viewmodel:

 public Command OpenLinkCommand => new Command(() =>
 {
     //do something
 });

Supported Gestures

• TapCommand (ICommand)
• DoubleTapCommand (ICommand)
• PanCommand (ICommand)
• LongPressCommand (ICommand)
• TapPointCommand (ICommand or Command<Point>) where point is the absolute tap position relative to the view
• DoubleTapPoinCommand (ICommand or Command<Point>) where point is the absolute double tap position relative to the view
• PanPointCommand (ICommand or Command<PanEventArgs>) where point is the absolute position relative to the view
• LongPressPointCommand (ICommand or Command<Point>) where point is the absolute tap position relative to the view
• SwipeLeftCommand
• SwipeRightCommand
• SwipeTopCommand
• SwipeBottomCommand
• PinchCommand (Command<PinchEventArgs>) where PinchEventArg contains StartingPoints, CurrentPoints, Center, Scale, RotationRadians, RotationDegrees, Status

Properties:

• IsPanImmediate Set to true to receive the PanCommand or PanPointCommand event on touch down, instead of after a minimum move distance. Default to false.

Examples

Somme commands in XAML

<StackLayout ui:Gesture.TapCommand="{Binding OpenCommand}" IsEnabled="True">
    <Label Text="1.Tap this text to open an url" />
</StackLayout>

<StackLayout ui:Gesture.DoubleTapPointCommand="{Binding OpenPointCommand}" IsEnabled="True">
    <Label Text="2.Double tap this text to open an url" />
</StackLayout>

<BoxView
    ui:Gesture.PanPointCommand="{Binding PanPointCommand}"
    HeightRequest="200" WidthRequest="300"
    InputTransparent="False"
    IsEnabled="True"
     />

In the viewmodel:

public ICommand OpenCommand => new Command(async () =>
{
   //...
});

public ICommand OpenPointCommand => new Command<PointEventArgs>(point =>
{
    PanX = point.X;
    PanY = point.Y;
    //...
});

public ICommand PanPointCommand => new Command<PanEventArgs>(args =>
{
    var point = args.Point;
    PanX = point.X;
    PanY = point.Y;
    //...
});

Exemple in C# on a Grid containing an horizontal slider (set value on tap)

//Tap anywhere to set value
Gesture.SetTapPointCommand(this, new Command<PointEventArgs>(pt =>
{
    var delta = (pt.X - Padding.Left) / (Width - Padding.Left - Padding.Right);
    if(delta<0 || delta>1)
        return;
    Value = (int)Math.Round((Maximum - Minimum) * delta);
}));

Limitations

Only commands are supported (PR welcome for events). No .NET events. So you must use the MVVM pattern (https://developer.xamarin.com/guides/xamarin-forms/xaml/xaml-basics/data_bindings_to_mvvm/).

Swipe commands are not supported on UWP due to a bug (event not received). If you find it, notify me! PinchCommand is not supported (yet) on UWP. PR welcome.

If your command is not receiving events, make sure that:

• you used the correct handler. Ie: the LongPressPointCommand should be new Command<PointEventArgs>(pt => ...)
• you set IsEnabled="True" and InputTransparent="False" on the element

UWP requires fall creator update

Breaking changes

Version 3.3.3 has breaking changes:

• Point commands now gives a PointEventArgs instead of a Point. ie: Command<PointEventArgs>
• Initialization namespace is unified across platforms: Vapolia.Lib.Effects.PlatformGestureEffect.Init();

Version 3.3.0 has breaking changes:

• Command names have changed
• PanPointCommand returns an absolute position, not a relative position anymore. It also returns the gesture state. The gesture can also be cancelled.