java – Mapview上的按钮

@H_489_1@我正在我的MapActivity.java中创建一个OSMdroid mapview,我想添加按钮&弹出窗口 – 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.@H_197_2@ @H_489_1@

@Override
public 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);
}

@H_489_1@编辑：
我说的是一个按钮@H_197_2@ @H_489_1@

    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);