Multitouch  - AS3

Identifies the multi-touch mode for touch and gesture event handling. Use this property to manage whether or not events are dispatched as touch events with multiple points of contact and specific events for different gestures (such as rotation and pan), or only a single point of contact (such as tap), or none at all (contact is handled as a mouse event). To set this property, use values from the flash.ui.MultitouchInputMode class.

The default value is gesture.

Related API Elements

Multitouch.inputMode=MultitouchInputMode.TOUCH_POINT;

var mySprite:Sprite = new Sprite();
var myTextField:TextField = new TextField();

mySprite.graphics.beginFill(0x336699);
mySprite.graphics.drawRect(0,0,40,40);
addChild(mySprite);

mySprite.addEventListener(TouchEvent.TOUCH_TAP, taphandler);

function taphandler(e:TouchEvent): void {
    myTextField.text = "I've been tapped";
    myTextField.y = 50;
    addChild(myTextField);
}

Specifies whether the AIR runtime maps touch events to mouse events.

When true, the default, the AIR runtime dispatches a mouse event in addition to a touch event for touch inputs. When false, the runtime does not dispatch an additional mouse event. Setting this property to false can cause existing code, libraries, and frameworks that rely on mouse events to function incorrectly on devices that support touch input.

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The maximum number of concurrent touch points supported by the current environment.

Note: On Android, for the devices supporting more than two touch points, the return value is 2.

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A Vector array (a typed array of string values) of multi-touch contact types supported in the current environment. The array of strings can be used as event types to register event listeners. Possible values are constants from the GestureEvent, PressAndTapGestureEvent, and TransformGestureEvent classes (such as GESTURE_PAN).

If the Flash runtime is in an environment that does not support any multi-touch gestures, the value is null.

Note: For Mac OS 10.5.3 and later, Multitouch.supportedGestures returns non-null values (possibly indicating incorrectly that gesture events are supported) even if the current hardware does not support gesture input.

Use this property to test for multi-touch gesture support. Then, use event handlers for the available multi-touch gestures. For those gestures that are not supported in the current evironment, you'll need to create alternative event handling.

More examples

Related API Elements

Multitouch.inputMode = MultitouchInputMode.GESTURE;

    for each (var item:String in Multitouch.supportedGestures) {
        trace("gesture " + item);
        if (item == TransformGestureEvent.GESTURE_PAN)
            img.addEventListener(TransformGestureEvent.GESTURE_PAN, onPan);
        else if (item == TransformGestureEvent.GESTURE_ROTATE)
            img.addEventListener(TransformGestureEvent.GESTURE_ROTATE, onRotate);
        else if (item == TransformGestureEvent.GESTURE_SWIPE)
            img.addEventListener(TransformGestureEvent.GESTURE_SWIPE, onSwipe);
        else if (item == TransformGestureEvent.GESTURE_ZOOM)
            img.addEventListener(TransformGestureEvent.GESTURE_ZOOM, onZoom);
    }

Indicates whether the current environment supports gesture input, such as rotating two fingers around a touch screen. Gesture events are listed in the TransformGestureEvent, PressAndTapGestureEvent, and GestureEvent classes.

Note: For Mac OS 10.5.3 and later, this value is always true. Multitouch.supportsGestureEvent returns true even if the hardware does not support gesture events.

More examples

Related API Elements

Indicates whether the current environment supports basic touch input, such as a single finger tap. Touch events are listed in the TouchEvent class.

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