void AddSomeGesturesUsingCode()
{
//2 options:
//1. use the standard xamarin api. e.g. view.GestureRecgonizers.Add(yourgesturerecognizer)
// and then call view.ProcessGestures();
// this has the benefit that when Xamarin add an api hook we can remove the view.ProcessGestures call and
// it will all be good.
//2. use the extension method view.AddGestureRecognizer(yourgesturerecognizer)
// this is easier to use; and does everything under the hood; but it's a bit more obtrusive.
// in all cases, until Xamarin do more to open up the api, you must use the view extension method
// removeGestureRecognizer
// comment on https://bugzilla.xamarin.com/show_bug.cgi?id=30467 to get Xamarin to expand
// IGestureRecognizer with some add/remove hooks
var panRecognizer = new PanGestureRecognizer ();
panRecognizer.OnAction += OnAction;
var Box3 = new BoxView () {
Color = Color.Olive,
};
MainLayout.Children.Add (Box3);
Box3.Layout (new Rectangle (100, 400, 100, 100));
// Box3.AddGestureRecognizer (panRecognizer);
var panRecognizerWith2Tocuhes = new TwinTechs.Gestures.PanGestureRecognizer ();
panRecognizerWith2Tocuhes.OnAction += OnAction;
panRecognizerWith2Tocuhes.MinimumNumberOfTouches = 2;
Label2.GestureRecognizers.Add (panRecognizerWith2Tocuhes);
Label2.ProcessGestureRecognizers ();
}
public PanGestureExample3 ()
{
InitializeComponent ();
MainLayout.OnLayoutChildren += MainLayout_OnLayoutChildren;
OuterView = new StackLayout {
Padding = new Thickness (50),
BackgroundColor = Color.Yellow
};
this.MainLayout.Children.Add (OuterView);
OuterView.Layout (_outerLayoutBounds);
Box = new BoxView {
Color = Color.Red,
WidthRequest = 150,
HeightRequest = 150,
};
OuterView.Children.Add (Box);
var panRecognizer = new PanGestureRecognizer ();
panRecognizer.IsConsumingTouchesInParallel = true;
panRecognizer.OnAction += Gesture_OnAction;
Box.AddGestureRecognizer (panRecognizer);
Box2 = new BoxView ();
Box2.Color = Color.Blue;
this.MainLayout.Children.Add (Box2);
Box2.Layout (_box2Bounds);
panRecognizer = new PanGestureRecognizer ();
panRecognizer.OnAction += Gesture_OnAction;
panRecognizer.IsConsumingTouchesInParallel = true;
Box2.AddGestureRecognizer (panRecognizer);
DoBoxAnimation ();
}
public PanGestureExample2 ()
{
InitializeComponent ();
MainLayout.OnLayoutChildren += MainLayout_OnLayoutChildren;
Box = new BoxView ();
Box.Color = Color.Red;
this.MainLayout.Children.Add (Box);
Box.Layout (_boxBounds);
var panRecognizer = new PanGestureRecognizer ();
panRecognizer.IsConsumingTouchesInParallel = true;
panRecognizer.OnAction += Gesture_OnAction;
Box.AddGestureRecognizer (panRecognizer);
Box2 = new BoxView ();
Box2.Color = Color.Blue;
this.MainLayout.Children.Add (Box2);
Box2.Layout (_box2Bounds);
panRecognizer = new PanGestureRecognizer ();
panRecognizer.OnAction += Gesture_OnAction;
panRecognizer.IsConsumingTouchesInParallel = true;
Box2.AddGestureRecognizer (panRecognizer);
DoBoxAnimation ();
}