Tiled map loader for Android , based on the pyramid model, supports a variety of projections, including Web Mercator projection, latitude and longitude projection and custom projection; supports locating, adding layers and overlays. Android瓦片地图加载控件，基于金字塔模型，支持多种投影，包括Web墨卡托投影，经纬度直投及自定义投影等；支持定位，添加图层和覆盖物。