我不能让CLCircularRegion无缘无故地开火。我试过把密码放哪儿。radius: CLLocationDistance = CLLocationDistance(300)let region = CLCircularRegionCLLocationDistance = CLLocationDistance(300) let region
我的问题是在初始化CLCircularRegion时,我会得到一个错误,上面写着“使用未声明的类型'center'”。我跟踪了苹果开发者网站的文件,不知道我做错了什么。任何帮助都将不胜感激。谢谢。CLLocationDistance = CLLocationDistance(10.0)
var geoRegion:CLCircularRegion= CLCircularRegion(center: center, ra