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