Android itemizedOverlay 的 onTap Action 被覆盖

Question

我有一个类:

class MapItemizedOverlay extends com.google.android.maps.ItemizedOverlay<OverlayItem> { 
    private Context context;
    private ArrayList items = new ArrayList();

    public MapItemizedOverlay(Context aContext, Drawable marker) {
        super(boundCenterBottom(marker));
        context = aContext;
    }

    public void addOverlayItem(OverlayItem item) {
        items.add(item);
        populate();
    }

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

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

    @Override
    protected boolean onTap(int index) {
       OverlayItem item = (OverlayItem) items.get(index);
       AlertDialog.Builder dialog = new AlertDialog.Builder(context);
       dialog.setTitle(item.getTitle());
       dialog.setMessage(item.getSnippet());
       dialog.show();
       return true;
    }

    @Override
    public boolean onTap (final GeoPoint p, final MapView mapView) {
        Geocoder geoCoder = new Geocoder(getBaseContext(), Locale.getDefault());
        try {
            List<Address> addresses = geoCoder.getFromLocation(p.getLatitudeE6() / 1E6,
                        p.getLongitudeE6() / 1E6, 1);
            String address = "";
            if (addresses.size() > 0) {
            for (int i=0; i<addresses.get(0).getMaxAddressLineIndex(); i++)
                    address += addresses.get(0).getAddressLine(i) + "\n";
            }   
            address.cancel();
            address.setText(address);
            address.show(); 
        }
        catch (IOException e) {
            e.printStackTrace();
        }
        return true;
    }
}

我使用以下函数在 map 上添加一些叠加层:

private void initialiseOverlays() {
        // Create an ItemizedOverlay to display a list of markers
        Drawable defaultMarker = getResources().getDrawable(R.drawable.marker);
        MapItemizedOverlay mapItemizedOverlay = new MapItemizedOverlay(this, defaultMarker);

        mapItemizedOverlay.addOverlayItem(new OverlayItem(new GeoPoint((int) (12.345678 * 1E6), (int) (23.456789 * 1E6)), "Point 1", "some-random-text"));
        mapItemizedOverlay.addOverlayItem(new OverlayItem(new GeoPoint((int) (89.012345 * 1E6), (int) (67.890123 * 1E6)), "Point number 2", "more-random-text"));        
        // Add the overlays to the map
        mapView.getOverlays().add(mapItemizedOverlay);
      }

如果只定义了一个 onTap 函数，则一切正常 - 如果我在 map 上的某处单击，我可以获得地址，或者如果我单击该地点上的图标，我可以获得包含该地点标题和内容的对话框.但我想让这两个功能一起工作，应用程序检测点击是在 map 上的空白位置还是在标记(可绘制集)上并显示它的信息。我怎样才能做到这一点？

Answer 1

找到答案 - 必须包括:

if(super.onTap(p, mapView)) {
                return true;
            }

在 public boolean onTap (final GeoPoint p, final MapView mapView) 函数的开头。