Question

我有两个视图：子视图和父视图（子视图是父视图的一部分）;每个视图都有自己的onTouchListener。我希望每个视图都能处理自己的onInterceptTouchEvent。马上;但是，子视图的onTouchListener永远不会收到任何事件。他们都被发送到父视图的听众。如何确保子视图收到自己的事件？

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    //Log.d(TAG, "onInterceptTouchEvent " + ev);
    // handle child events
    // note: if you horizontally fling over button its onClick() is not performed


        MotionEvent ss  = MotionEvent.obtain(ev);
        globalVariabels.currentGallery.onTouchEvent(ss);
        int bounds[] = {0,0};
        globalVariabels.currentGallery.getLocationOnScreen(bounds);
        int height = globalVariabels.currentGallery.getHeight() + bounds[0];
        int width = globalVariabels.currentGallery.getWidth() + bounds[1];
        TouchDelegate delegate = new TouchDelegate(new Rect(0, 0, 2000, 2000), globalVariabels.currentGallery); 
         setTouchDelegate(delegate);
        switch (ev.getAction()) {
            case MotionEvent.ACTION_DOWN: {
                mIgnore = false;
                Log.e("ooo", "oo");
                Log.e("X:","" + ev.getX());
                Log.e("Y:","" + ev.getY());
                mNeedToRebase = true;
                mInitialX = ev.getX();
                mInitialY = ev.getY();
                return false ;
            }

            case MotionEvent.ACTION_MOVE: {
                if (!mIgnore) {
                    Log.e("22", "22");
                    float deltaX = Math.abs(ev.getX() - mInitialX);
                    float deltaY = Math.abs(ev.getY() - mInitialY);
                    mIgnore = deltaX < deltaY;
                    super.onInterceptTouchEvent(ev);
                    return !mIgnore;
                }
                return false;
            }
            default: {
                return super.onInterceptTouchEvent(ev);
            }
        }
    }

Answer 1

考虑使用dispatchTouchEvent代替onInterceptTouchEvent。我遇到了一些问题，因为在某些设备上（在三星上，更精确）它可能不会像预期的那样工作。调度真的很简单。

想法是你将覆盖dispatchTouchEvent，调用超级并处理你的动作事件。这是一个例子：

@Override
protected boolean dispatchTouchEvent(MotionEvent ev) {
    //perform your on-touch behaviour

    return super.dispatchTouchEvent(ev);    //child's onTouchListener will be triggered
}

多次处理动作事件

1 个答案: