Android 双击，ontouchevent 不工作

Question

我需要在双击时进行缩放。为什么这不起作用？我为此工作了很长时间，但没有结果。没有识别到​​触摸事件

public class MyMapActivity extends MapActivity implements OnGestureListener{
private MapView mapView;

@Override
public void onCreate(Bundle savedInstanceState) {

requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mapView = (MapView)findViewById(R.id.mapView);
mGestureDetector = new GestureDetector(this,this);
detector.setOnDoubleTapListener(new OnDoubleTapListener(){
    @Override
public boolean onDoubleTap(MotionEvent e) {
 int x = (int)e.getX(), y = (int)e.getY();;  
 Projection p = map.getProjection();  
 map.getController().animateTo(p.fromPixels(x, y));
 map.getController().zoomInFixing(x, y);  
 return false;
}

@Override
public boolean onDoubleTapEvent(MotionEvent e) {
    return false;
}

    });
}
@Override
public boolean onTouchEvent(MotionEvent me) {
this.mGestureDetector.onTouchEvent(me);
return super.onTouchEvent(me); 
}

Answer 1

参见 this教程，它有完整的操作方法或在 stackoverflow 上查看类似问题 here和 here .