Android MotionEvent中getX()和getRawX()的區(qū)別實例詳解

2019-12-12 03:20:07

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Android MotionEvent中getX()和getRawX()的區(qū)別實例詳解

實例代碼：

public class Res extends Activity implements View.OnTouchListener {      Button btn = null;    int x = 0;    int y = 0;    int rawx = 0;    int rawy = 0;          @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;    }  }

結論：

當你觸到按鈕時，x,y是相對于該按鈕左上點（控件本身）的相對位置。

而rawx,rawy始終是相對于屏幕的位置。