MotionEvent中getX()和getRawX()的区别

首先我们通过一个button进行一下测试,可以知道: 

 public class Res extends Activity implements View.OnTouchListener {

     Button btn = null;
     int x = 0;
     int y = 0;
     int rawx = 0;
     int rawy = 0;

     /** Called when the activity is first created. */
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         btn = (Button) findViewById(R.id.button);
         btn.setOnTouchListener(this);
     }

     public boolean onTouch(View view, MotionEvent event) {
         int eventaction = event.getAction();
         switch (eventaction) {
         case MotionEvent.ACTION_DOWN:
             break;
         case MotionEvent.ACTION_MOVE:
             x = (int) event.getX();
             y = (int) event.getY();
             rawx = (int) event.getRawX();
             rawy = (int) event.getRawY();
             Log.d("DEBUG", "getX=" + x + "getY=" + y + "\n" + "getRawX=" + rawx
                     + "getRawY=" + rawy + "\n");
             break;

         case MotionEvent.ACTION_UP:

             break;
         }
         return false;
     }
 }

getX()是表示Widget相对于自身左上角的x坐标,而getRawX()是表示相对于屏幕左上角的x坐标值(注意:这个屏幕左上角是手机屏幕左上角,不管activity是否有titleBar或是否全屏幕),getY(),getRawY()一样的道理