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 + "
" + "getRawX=" + rawx
                    + "getRawY=" + rawy + "
");
            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