Question

我正在开发一款游戏，我想在用户单次触摸屏幕时执行某些操作，而在用户长按屏幕时执行一些其他操作。为此，我创建了一个Gesture Detector类，并向其中添加事件。

表面视图类

public class MySurfaceView extends SurfaceView implements SurfaceHolder.Callback {
public MySurfaceView(Context context, AttributeSet attrs) {
gestureDetector = new GestureDetector(context, new GestureListener(this));
}


@Override
public boolean onTouchEvent(MotionEvent event) {
     Log.d(TAG,"Inside Touch Event");
    float lasttouched_X, lasttouched_Y;
    Card localcard;
    int index=-1;
    Log.d(TAG,"Inside OnTouch event");
    gestureDetector.onTouchEvent(event);
    return true;
  }
 }

手势检测器类

 class GestureListener extends GestureDetector.SimpleOnGestureListener{
private static final String TAG = GestureListener.class.getSimpleName();  // To get name of class in Logging
    MySurfaceView mySurfaceView;



    public GestureListener(MySurfaceView paramMySurfaceView)
    {
        mySurfaceView=paramMySurfaceView;
    }

@Override
public void onLongPress(MotionEvent e) {

    Log.d(TAG,"Inside Long Pressed event");
        mySurfaceView.addTouchedCardToLongTouched(e);
}


@Override
public boolean onDown(MotionEvent e) {

  // don't return false here or else none of the other
  // gestures will work

    return  false;
}


@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
    mySurfaceView.swapSingleTouchCard(e);
    return false;
}

@Override
public boolean onDoubleTap(MotionEvent e) {
    Log.d(TAG,"Inside On Double Tap event");
    return false;
}

}

OnLongPress事件仅第一次起作用，此后每当我长按触摸屏时，它就会触发onSingleTapConfirmed事件。我无法理解为什么会发生这种情况。

请让我知道为什么会这样。预先感谢。

OnLongPress事件仅在第一次工作

0 个答案: