标注更新

@@ -57,19 +57,23 @@ GeoQ地图层
 ## 基本用法
 
 天地图2000
-```
+```java
 t_vec = new TianDiTuTiledMapServiceLayer(TianDiTuLayerTypes.VEC_C);
 mapView.addLayer(t_vec);
 Point initPoint = new Point(121.56, 29.862149);
 mapView.zoomToResolution(initPoint, t_vec.getRes()[16]);
 ```
+百度地图
+```java
 
-其它(以Tencent图层为例)
 ```
+
+其它(以Tencent图层为例)
+```java
 TencentMapsTiledServiceLayer tencentMapsTiledServiceLayer = new TencentMapsTiledServiceLayer(TencentMapLayerTypes.TENCENT_MAP_VECTOR);
 mapView.addLayer(tencentMapsTiledServiceLayer);
-// 经纬度坐标要换成web墨卡托
-Point initPoint = new Point(121.56, 29.862149);
+// 经纬度坐标要转换为GCJ02后，再换成web墨卡托
+Point initPoint = JZLocationConverter.wgs84ToGcj02(new Point(121.56, 29.862149));
 Point pt = GISHelper.lonLat2Mercator(initPoint);
 mapView.zoomToResolution(pt, tencentMapsTiledServiceLayer.getRes()[16]);