检测滑动,单击,按住一个View Android

Question

我有一个ImageView充满我的整体Activity.我需要能够检测到4个触摸事件:

• 保持(超过400毫秒)
• 点击
• 向左滑动
• 向右滑动

目前我能够使用以下代码检测前两个:

imageView.setOnTouchListener(new View.OnTouchListener() {

    private Timer timerr = new Timer();
    private long LONG_PRESS_TIMEOUT = 400; // TODO: your timeout here
    private boolean wasLong = false;

    @Override
    public boolean onTouch(View v, MotionEvent event) {
      Log.d(getClass().getName(), "touch event: " + event.toString());

      if (event.getAction() == MotionEvent.ACTION_DOWN) {
       // HOLD DETECTED
       timerr.schedule(new TimerTask() {
          @Override
          public void run() {
            SlideShow.this.runOnUiThread(new Runnable() {
              @Override
              public void run() {

              }, LONG_PRESS_TIMEOUT);
             return true;
            }

            if (event.getAction() == MotionEvent.ACTION_UP) {
             if (!isPaused && !wasLong) {
              // CLICK DETECTED
              timerr.cancel();
              timerr = new Timer();
              if (!wasLong) {

               return false;
              }
             });

现在我正在尝试使用此问题中的代码来实现向右滑动和向左滑动操作.列表上的Android刷卡问题是这适用于listview,您可以在其中实现onTouchListener整个列表视图,以及单独onItemClickListener列表项.虽然只有一个Listener可用,但我不知道如何适应这种情况.

Answer 1

手势检测器是必经之路。

或者，

 image.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {

            switch (event.getAction()) {

                case MotionEvent.ACTION_DOWN:
                    x1 = event.getX();
                    y1 = event.getY();
                    t1 = System.currentTimeMillis();
                    return true;
                case MotionEvent.ACTION_UP:
                    x2 = event.getX();
                    y2 = event.getY();
                    t2 = System.currentTimeMillis();

                    if (x1 == x2 && y1 == y2 && (t2 - t1) < CLICK_DURATION) {
                        Toast.makeText(getActivity(), "Click", Toast.LENGTH_SHORT).show();
                    } else if ((t2 - t1) >= CLICK_DURATION) {
                        Toast.makeText(getActivity(), "Long click", Toast.LENGTH_SHORT).show();
                    } else if (x1 > x2) {
                        Toast.makeText(getActivity(), "Left swipe", Toast.LENGTH_SHORT).show();
                    } else if (x2 > x1) {
                        Toast.makeText(getActivity(), "Right swipe", Toast.LENGTH_SHORT).show();
                    } 


                    return true;
            }

            return false;
        }