swift 8.0之后打开 手机设置

                if #available(iOS 8.0, *){
                    if let url = URL(string: UIApplication.openSettingsURLString),
                        UIApplication.shared.canOpenURL(url){
                        print("可以打开设置")
                        UIApplication.shared.openURL(url)
                    }else{
                        print("不可以打开设置")
                    }
                }