模拟轨迹板双击与单击

Question

我正在尝试在我的Android应用中模拟点击并按住逻辑。我的问题是，当我执行双击时，它会同时执行两个单独的单击和双击。我曾考虑过在单次点击代码中创建一个单独的线程，以等待是否再次发生一次点击，但是我不确定这是否是一种优雅的解决方案。我的代码在下面

        if (event.getAction() == MotionEvent.ACTION_UP) {
            lastUpX = (int)event.getX();
            lastUpY = (int)event.getY();

            //Get difference between lastUp and lastDown
            int lastDownXDiff = Math.abs(lastDownX-lastUpX);
            int lastDownYDiff = Math.abs(lastDownY-lastUpY);

            Log.e("Down differences", lastDownXDiff + " " + lastDownYDiff);

            if ((System.currentTimeMillis()-lastDownTime < 100) && lastDownXDiff < 50 && lastDownYDiff < 50)
                messageQueue.add("CLICK LMB");



            messageQueue.add("RELEASE LMB");
        }
        else if (event.getAction() == MotionEvent.ACTION_DOWN) {
            lastDownX = (int)event.getX();
            lastDownY = (int)event.getY();

            if (lastDownTime == -1) {
                lastDownTime = System.currentTimeMillis();
            }
            //If the user double taps, send a left mouse button click
            else {
                if (System.currentTimeMillis()-lastDownTime <= 300) {
                    messageQueue.add("HOLD LMB");

                    Log.e("Double tap", "Double tap");
                }