百度地图V3.5.0获取可视地图范围中心点、东北方、西南方（右上角、左下角）坐标

OnMapStatusChangeListener onMapStatusChangeListener=new OnMapStatusChangeListener(){

@Override

public void onMapStatusChange(MapStatus mapStatus) {

// TODO Auto-generated method stub

}

@Override

public void onMapStatusChangeFinish(MapStatus mapStatus) {

// 地图状态改变结束

LatLng target = mapStatus.target;// target地图操作的中心点。

LatLngBounds bound = mapStatus.bound;

LatLng northeast = bound.northeast;//地图东北角百度坐标

LatLng southwest = bound.southwest;//地图西南角百度坐标

}

@Override

public void onMapStatusChangeStart(MapStatus mapStatus) {

// TODO Auto-generated method stub

}

};

mBaiduMap.setOnMapStatusChangeListener(onMapStatusChangeListener);

注：如果没有MapStatus可以用

//mBaiduMap=mMapView.getMap();

LatLngBounds bound = mBaiduMap.getMapStatus().bound;

LatLng northeast = bound.northeast;

LatLng southwest = bound.southwest;

loadGuideNetWork(northeast, southwest);