Android：获取视图的x，y坐标

Question

我编写了下面的代码来找出触摸点的坐标。

view.setOnTouchListener(new View.OnTouchListener() { 
      @Override 
      public boolean onTouch(View view, MotionEvent motionEvent) { 
       float val = view.getAlpha(); 
       float xVal = view.getX(); 
       float yVal = view.getY(); 
       String message = "Screen height: " + height + ", width: " + width + "\n" + 
         "Alpha Value: " + val + ", x Coordinate: " + xVal + ", y Coordinate: " + yVal; 
       Toast.makeText(MainActivity.this, message, Toast.LENGTH_SHORT).show(); 
       return false; 
      } 

事实证明，总是返回固定值，32.0为每个x坐标和y坐标。

Answer 1

在onTouch()方法中，分别通过view.getX()和view.getY()获取x和y坐标，下面的工作。

float xVal = motionEvent.getX(); float yVal = motionEvent.getY();