单个小部件上的 onTouchListener 和 onClickListener

Question

    @Override public boolean onTouch(View v, MotionEvent event) {
        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                //movement
                initialX = params.x;
                initialY = params.y;
                initialTouchX = event.getRawX();
                initialTouchY = event.getRawY();
                return false;

            case MotionEvent.ACTION_UP:
                return false;

            case MotionEvent.ACTION_MOVE:
                //movement
                params.x = initialX + (int) (event.getRawX() - initialTouchX);
                params.y = initialY + (int) (event.getRawY() - initialTouchY);

                SharedPreferences.Editor pos = getSharedPreferences(MY_PREFS_NAME, MODE_PRIVATE).edit();
                pos.putInt("x",params.x);
                pos.putInt("y",params.y);
                pos.commit();

                windowManager.updateViewLayout(chatHead, params);
                return true;
        }
        return false;
    }
});

chatHead.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        Toast.makeText(getApplicationContext(), "Short Press", Toast.LENGTH_SHORT).show();
    }
});

chatHead.setOnLongClickListener(new View.OnLongClickListener() {
    @Override
    public boolean onLongClick(View v) {
        Toast.makeText(getApplicationContext(), "Long Press", Toast.LENGTH_SHORT).show();
        return true;
    }
});

这是我的 onTouch 方法。我将 onTouchListener、onClickListener 和 onLongClickListener 设置为单个图像视图。代码似乎工作正常，但是当我只移动图像很短的时间时，短按或长按也会运行。我该如何解决这个问题？

Answer 1

首先，您只需要使用 onTouchListener 并在某些条件的帮助下检测 onClick 和 onLongClick

• 对于MotionEvent.ACTION_UP上的onClick放置条件

  if(initialTouchX == event.getRawX() && initialTouchY == event.getRawY()){
       //on Click Detected
  }
  

• 对于 OnLongPress 试试这个

  setOnTouchListener(new View.OnTouchListener() {
       public boolean onTouch(View v, MotionEvent event) {
  
          int action = MotionEventCompat.getActionMasked(event);
  
  
          switch (event.getAction()) {
              case MotionEvent.ACTION_DOWN:
                  longClick = false;
                  x1 = event.getX();
                  break;
  
              case MotionEvent.ACTION_MOVE:
                  if (event.getEventTime() - event.getDownTime() > 500 && Math.abs(event.getX() - x1) < MIN_DISTANCE) {
                      longClick = true;
                  }
                  break;
  
              case MotionEvent.ACTION_UP:
                          if (longClick) {
                              Toast.makeText(activity, "Long preess", Toast.LENGTH_SHORT).show();
                          } 
          }
          return true;
      }
  });