private void initBaiduMap() {
    mapView = (MapView) findViewById(R.id.bmapView);
    baiduMap = mapView.getMap();
    baiduMap.setMaxAndMinZoomLevel(18, 13);
    IntentFilter iFilter = new IntentFilter();
    iFilter.addAction(SDKInitializer.SDK_BROADTCAST_ACTION_STRING_PERMISSION_CHECK_ERROR);
    iFilter.addAction(SDKInitializer.SDK_BROADCAST_ACTION_STRING_NETWORK_ERROR);
    receiver = new BaiduReceiver();
    registerReceiver(receiver, iFilter);

    geoCoder = GeoCoder.newInstance();
    geoCoder.setOnGetGeoCodeResultListener(this);

    Intent intent = getIntent();
    intentType = intent.getStringExtra(TYPE);
    initActionBar(R.string.chat_position);
    if (intentType.equals(TYPE_SELECT)) {
      // 选择发送位置
      // 开启定位图层
      baiduMap.setMyLocationEnabled(true);
      baiduMap.setMyLocationConfigeration(
          new MyLocationConfigeration(MyLocationConfigeration.LocationMode.NORMAL, true, null));
      // 定位初始化
      locClient = new LocationClient(this);
      locClient.registerLocationListener(myListener);
      LocationClientOption option = new LocationClientOption();
      option.setProdName("avosim");
      option.setOpenGps(true);
      option.setCoorType("bd09ll");
      option.setScanSpan(1000);
      option.setOpenGps(true);
      option.setIsNeedAddress(true);
      option.setIgnoreKillProcess(true);
      locClient.setLocOption(option);
      locClient.start();
      if (locClient != null && locClient.isStarted()) {
        locClient.requestLocation();
      }
      if (lastLocation != null) {
        // 显示在地图上
        LatLng ll = new LatLng(lastLocation.getLatitude(), lastLocation.getLongitude());
        MapStatusUpdate u = MapStatusUpdateFactory.newLatLng(ll);
        baiduMap.animateMapStatus(u);
      }
    } else {
      Bundle b = intent.getExtras();
      LatLng latlng = new LatLng(b.getDouble(LATITUDE), b.getDouble(LONGITUDE)); // 维度在前,经度在后
      baiduMap.setMapStatus(MapStatusUpdateFactory.newLatLng(latlng));
      OverlayOptions ooA = new MarkerOptions().position(latlng).icon(descriptor).zIndex(9);
      baiduMap.addOverlay(ooA);
    }
  }
 @Override
 protected void onDestroy() {
   if (locClient != null && locClient.isStarted()) {
     // 退出时销毁定位
     locClient.stop();
   }
   // 关闭定位图层
   baiduMap.setMyLocationEnabled(false);
   mapView.onDestroy();
   mapView = null;
   // 取消监听 SDK 广播
   unregisterReceiver(receiver);
   super.onDestroy();
   // 回收 bitmap 资源
   descriptor.recycle();
 }
 @Override
 protected void onResume() {
   mapView.onResume();
   super.onResume();
 }
 @Override
 protected void onPause() {
   mapView.onPause();
   super.onPause();
   lastLocation = null;
 }