权限：要求在iOS上获得权限的统一API

权限公开了一个统一的API，可以在iOS上请求权限。 ••• 用法 允许 let permission: Permission = . contacts print (permission. status ) // .notDetermined permission. request { status in switch status { case . authorized : print ( " authorized " ) case . denied : print ( " denied " ) case . disabled : print ( " disabled " ) case . notDetermined : print ( " not determined " ) } } 支持的权限 权限警