java–Mapview上的按钮

我正在我的MapActivity.java中创建一个OSMdroID mapvIEw,我想添加按钮&d出窗口 – 我只知道这是如何在.xml中完成的,但由于这个MapVIEw没有使用任何.xml,我很困惑如何在我的java代码中放置(图像)按钮.

@OverrIDepublic voID onCreate(final Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    // Setup base map    final relativeLayout rl = new relativeLayout(this);    CloudmadeUtil.retrIEveCloudmadeKey(getApplicationContext());    final MapVIEw osmv = new MapVIEw(this,256);    myMapController = osmv.getController();      rl.addVIEw(osmv,new relativeLayout.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));    osmv.setBuiltInZoomControls(true);    osmv.setMultitouchControls(true);    myLocationoverlay = new MyLocationOverlay(this,osmv);//*sniP* setup of map,mapcontrollers,tiles etc...    osmv.getoverlays().add(tilesOverlay);    osmv.getoverlays().add(myLocationoverlay);      this.setContentVIEw(rl);}

编辑：
我说的是一个按钮

    Imagebutton goto_location = new Imagebutton(this);    goto_location.setonClickListener(new OnClickListener()    {        @OverrIDe        public voID onClick(VIEw v) {            // Todo auto-generated method stub            showMylocation();        }               });    relativeLayout.LayoutParams params = new relativeLayout.LayoutParams(40,40);    params.rightmargin = 10;    params.topmargin = 10;    rl.addVIEw(goto_location,params);