My app that worked fine on iOS 7 doesn't work with the iOS 8 SDK.
CLLocationManager doesn't return a location, and I don't see my app under Settings -> Location Services either. I did a Google search on the issue, but nothing came up. What could be wrong?
我最终解决了自己的问题.
显然，在iOS 8 SDK中，在开始位置更新之前，需要在CLLocationManager上调用requestAlwaysAuthorization(用于后台位置)或requestWhenInUseAuthorization(仅用于前台位置).
还需要在Info.plist中输入NSLocationAlwaysUsageDescription或NSLocationWhenInUseUsageDescription键，并在提示中显示消息.添加这些解决了我的问题.
有关更多详细信息，请参阅:Core-Location-Manager-Changes-in-ios-8