【MotionEvent】亲测MotionEvent中getX()和getRawX()的区别

来源：互联网发布：最优化教材编辑：程序博客网时间：2024/05/01 12:07

情景：昨天看了郭霖仿360浮动窗口，在自定义View,onTouchEvent中看到了

event.getX();event.getY();event.getRawX();event.getRawY();

就想知道getX与getRawX的区别

方案：于是用代码去验证下两个值的差别

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;      }  }

结论：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

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