火龙果地图服务

该APP能够显示地图并定位，给该APP定位服务权限，打开地图后可自动定位到所在地点。距离与面积测量：在地图上添加标记，如一条线段的两个顶点，一个多边形的各个顶点，就可计算出线段的长度和多边形的面积。 The APP is able to display map and location, location services permission to the APP, open map can automatically navigate to the location. Distance area measurement: Add mark on the map, such as a segment of two vertices, each vertex of a polygon can be calculated polygon area and the length of the line segment.