地图视图双击事件不起作用

In my application i want to implement double tap event on map view.For this I'm using following code but doesn't seem to work.Please help me... 
Thanks in advance!! 
public class NooYawk extends MapActivity implements OnGestureListener, OnDoubleTapListener { 
    private MapView map=null; 
    private MyLocationOverlay me=null; 
    GeoPoint geoPoint; 
    MapController controller; 
    OverlayItem overlayItem; 
    PushPinMapView pushPinMapView; 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     map=(MapView)findViewById(R.id.map); 

     // map.getController().setCenter(getPoint(40.76793169992044,-73.98180484771729)); 
     controller=map.getController(); 
     map.setStreetView(true); 
     map.setBuiltInZoomControls(true); 

     Drawable marker=getResources().getDrawable(R.drawable.blue); 
     marker.setBounds(0, 0, marker.getIntrinsicWidth(), 
       marker.getIntrinsicHeight()); 

     geoPoint=new GeoPoint((int)(19.182 *1E6),(int)(72.961 * 1E6)); 
     controller.animateTo(geoPoint); 
     overlayItem=new OverlayItem(geoPoint, "Current loc",""); 
     List<Overlay> listOverlays= map.getOverlays(); 
     SitesOverlay sitesOverlay=new SitesOverlay(marker); 
     sitesOverlay.addOverlay(overlayItem); 
     listOverlays.add(sitesOverlay); 
     controller.setZoom(6); 

    } 
@Override 
    protected boolean isRouteDisplayed() { 
     // TODO Auto-generated method stub 
     return false; 
    } 


    private class SitesOverlay extends ItemizedOverlay<OverlayItem> { 
     private List<OverlayItem> items=new ArrayList<OverlayItem>(); 

     public SitesOverlay(Drawable marker) { 
      super(marker); 


     } 

     @Override 
     protected OverlayItem createItem(int i) { 
      return(items.get(i)); 
     } 

     @Override 
     public void draw(Canvas canvas, MapView mapView, 
       boolean shadow) { 
      super.draw(canvas, mapView, shadow); 

      boundCenterBottom(marker); 
     } 

     @Override 
     public int size() { 
      return(items.size()); 
     } 

     public void addOverlay(OverlayItem overlay) { 

      items.add(overlay); 

      //System.out.println("success"); 

      populate(); 

     } 
} 



@Override 
    public boolean onDown(MotionEvent e) { 
     // TODO Auto-generated method stub 
     return false; 
    } 

    @Override 
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, 
      float velocityY) { 
     // TODO Auto-generated method stub 
     return false; 
    } 

    @Override 
    public void onLongPress(MotionEvent e) { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, 
      float distanceY) { 
     // TODO Auto-generated method stub 
     return false; 
    } 

    @Override 
    public void onShowPress(MotionEvent e) { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public boolean onSingleTapUp(MotionEvent e) { 
     // TODO Auto-generated method stub 
     return false; 
    } 

    @Override 
    public boolean onDoubleTap(MotionEvent e) { 
     controller.zoomIn(); 
     return false; 
    } 

    @Override 
    public boolean onDoubleTapEvent(MotionEvent e) { 
     // TODO Auto-generated method stub 
     return false; 
    } 

    @Override 
    public boolean onSingleTapConfirmed(MotionEvent e) { 
     // TODO Auto-generated method stub 
     return false; 
    } 

}

来源

2011-08-26 android

我相信你真的必须创建一个GestureDetector使用它：我可能是错的，但我没有看到你实际做的是在你的代码的任何地方。以this为例。

来源

2011-08-26 06:11:35 Femi

@femi ...谢谢你的回应...但它仍然没有工作对不起。 – android

那么，'MapActivity'类完全可能注册它自己的'GestureDetector'，你不能覆盖，但更新你的代码并显示包括您正确创建GestureDetector的源代码，也许我们将能够为您找到一些帮助。 – Femi

您可以创建一个GestureDetector来处理这个动作，也可以实现一些蜱像这样（的作品）：

private long lastTouchTime = -1; 

@Override 
public boolean onTouchEvent(MotionEvent e, MapView mapView) { 
    long thisTime = System.currentTimeMillis(); 
    // 250 in TimeMillis is a good interval limit for a double click 
    if (thisTime - lastTouchTime < 250) { 
    // this is a double touch/tap 
    lastTouchTime = -1; 
    }else { 
    // this is a single touch/tap 
    lastTouchTime = thisTime; 
    } 
... 
}

希望它有助于..

来源

2011-09-07 21:54:41

地图视图双击事件不起作用

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