Using this code as a starting point, you can build your own location-basedservice with your own data model.
以该代码作为起点，您可以使用自己的数据模型构建自己的基于位置的服务。
2
Nearly half of those who noticed ads while using a location-basedservice took some action.
如果在使用定位服务时发现定位广告，近一半用户会采取行动。
3
Coordinates that are Shared with software developers, AD networks and location-basedservice providers in return for free location-based mobile applications and geo-targeted ads.