Android：imageview touch并发布

Question

如何检查ImageView是否已发布？

当我触摸imageview时，将调用此方法。

myImageView.setOnTouchListener(new OnTouchListener(){
   @Override
   public boolean onTouch(View v, MotionEvent event){
     return true;
   }
});

如果发布了图像视图，是否有任何算法或方法可以“监听”？ （用手指按下ImageView而不是释放它）。

Answer 1

您可以如下检测释放动作

myImageView.setOnTouchListener(new OnTouchListener(){
   @Override
   public boolean onTouch(View v, MotionEvent event){
      if(event.getAction() == MotionEvent.ACTION_UP){
          // image released
      }
      return true;
   }
});

Answer 2

OnTouchListener touchListener = new OnTouchListener（）{

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            // TODO Auto-generated method stub


            switch (event.getAction() & MotionEvent.ACTION_MASK) {

                case MotionEvent.ACTION_DOWN:
                case MotionEvent.ACTION_POINTER_DOWN:

                    //=====Write down your Finger Pressed code here

                    return true;

                case MotionEvent.ACTION_UP:
                case MotionEvent.ACTION_POINTER_UP:

                    //=====Write down you code Finger Released code here

                    return true;            
                }   

            return false;

        }
    };

Answer 3

这是一种使用OnTouchListener检测何时触摸（ ACTION_DOWN ）和释放（ ACTION_UP ）ImageView的方法：

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

                if(event.getAction() == MotionEvent.ACTION_DOWN){
                     //*TOUCH
                }else if(event.getAction() == MotionEvent.ACTION_UP) {                   
                    //*RELEASE
                }

                return true;
            }
        });