我只想将TransformGestureEvent.GESTURE_SWIPE添加到我的电影剪辑Rec_mc实例而不是舞

Question

/* Swipe Event
Swiping the stage executes a function containing your custom code. You can use this event to scroll text in a TextField or change states in your application.
Instructions:
1. Add your custom code on a new line after the lines that say "// Start your custom code" below.
*/
Multitouch.inputMode = MultitouchInputMode.GESTURE;
Rec_mc.addEventListener(TransformGestureEvent.GESTURE_SWIPE, fl_SwipeHandler);

function fl_SwipeHandler(event:TransformGestureEvent):void
{
        switch(event.offsetX)
        {
            // swiped right
            case 1:
            {
                // Start your custom code
                // This example code moves the selected object 20 pixels to the right.
                Rec_mc.x += 20;
                trace("swipe right");
                // End your custom code
                break;
            }
            // swiped left
            case -1:
            {
                // Start your custom code
                // This example code moves the selected object 20 pixels to the left.
                Rec_mc.x -= 20;
                trace("swipe left");
                // End your custom code
                break;
            }
        }
        switch(event.offsetY)
        {
            // swiped down
            case 1:
            {
                // Start your custom code
                // This example code moves the selected object 20 pixels down.
                Rec_mc.y += 20;
                trace("swipe down");
                // End your custom code
                break;
            }
            // swiped up
            case -1:
            {
                // Start your custom code
                // This example code moves the selected object 20 pixels up.
                Rec_mc.y -= 20;
                trace("swipe up");
                // End your custom code
                break;
            }
        }
}

Answer 1

手势事件不会在位于舞台上的特定 MC 中定位，因为手势可能会占用整个屏幕或传感器的尺寸。因此，成为一名优秀的程序员，将侦听器注册到 stage ，并根据应用程序的当前状态解析手势。

if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE,init);
function init(e:Event=null):void {
    removeEventListener(Event.ADDED_TO_STAGE,init);
    stage.addEventListener(TransformGestureEvent.GESTURE_SWIPE, fl_SwipeHandler);
}