为什么标记的信息窗口没有显示？

Question

当我点击地图的标记时,我陷入困境无法想象为什么信息窗口不显示.我在开发者安卓网站上看到,我应该只添加标记并给它们标题,片段等等.但结果却一无所获.

public class ClubMapActivity extends DefaultActivity implements GoogleMap.OnMarkerClickListener {
    private GoogleMap mMap;
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.clubmap);
        Bundle bundle = getIntent().getExtras();
        double lat = bundle.getDouble("latitude");
        double lng = bundle.getDouble("longitude");


        mMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
        mMap.addMarker(new MarkerOptions()
                .position(new LatLng(lat, lng))
                .title(bundle.getString("clubNmae")).snippet("AAA"));

        animateCameraTo(lat, lng);
        CameraUpdate zoom=CameraUpdateFactory.zoomTo(20);

        mMap.animateCamera(zoom);


    }

    public void animateCameraTo(final double lat, final double lng)
    {
        CameraUpdate center=
                CameraUpdateFactory.newLatLng(new LatLng(lat, lng));
        CameraUpdate zoom=CameraUpdateFactory.zoomTo(18);

        mMap.moveCamera(center);
        mMap.animateCamera(zoom);
    }


    @Override
    public boolean onMarkerClick(Marker marker) {
        if(marker.isInfoWindowShown()) {
            marker.hideInfoWindow();
        } else {
            marker.showInfoWindow();
        }
        return true;
    }
}

Answer 1

默认情况下,如果标记具有标题集,则当用户点击标记时会显示信息窗口.

确保您.title(bundle.getString("clubNmae")的返回值不为空值,否则在单击标记时无法看到信息窗口.