iOS开启相机、相册等使用权限的Cocoa keys

如何开启权限？

在访问相机、相册时，我们通常需要开启使用权限，方法是在info.plist中添加Cocoa Key，并输入该权限的使用说明:（如下图）

什么是Cocoa Keys？

'Cocoa and Cocoa Touch are the environments used to define apps that run in macOS, iOS, tvOS, and watchOS. The keys associated with the Cocoa environments provide support for Interface Builder nib files and provide support for other user-facing features vended by your bundle'
Cocoa和CocoaTouch是用来定义在MacOS、IOS、tvOS和Watch操作系统中运行的应用程序的环境。与cocoa环境相关联的keys，提供了对接口生成器nib文件的支持，并提供了对包支持的其他面向用户特性的支持。

Cocoa Keys 列表

权限说明	Cocoa Key	Xcode Name	String
蓝牙	NSBluetoothPeripheralUsageDescription	Privacy - Bluetooth Peripheral Usage Description	App需要您的同意,才能访问蓝牙
日历	NSCalendarsUsageDescription	Privacy - Calendars Usage Description	App需要您的同意,才能访问日历
相机	NSCameraUsageDescription	Privacy - Camera Usage Description	App需要您的同意,才能访问相机
通讯录	NSContactsUsageDescription	Privacy - Contacts Usage Description	App需要您的同意,才能访问通讯录
FaceID	NSFaceIDUsageDescription	Privacy - Face ID Usage Description
健康共享	NSHealthShareUsageDescription	Privacy - Health Share Usage Description
健康更新	NSHealthUpdateUsageDescription	Privacy - Health Update Usage Description
HomeKit	NSHomeKitUsageDescription	Privacy - HomeKit Usage Description
始终访问位置	NSLocationAlwaysUsageDescription	Privacy - Location Always Usage Description
位置	NSLocationUsageDescription	Privacy - Location Usage Description
在使用期间访问位置	NSLocationWhenInUseUsageDescription	Privacy - Location When In Use Usage Description
麦克风	NSMicrophoneUsageDescription	Privacy - Microphone Usage Description
运动	NSMotionUsageDescription	Privacy - Motion Usage Description
保存图片	NSPhotoLibraryAddUsageDescription	Privacy - Photo Library Additions Usage Description
相册	NSPhotoLibraryUsageDescription	Privacy - Photo Library Usage Description
提醒事项	NSRemindersUsageDescription	Privacy - Reminders Usage Description
媒体资料库	NSAppleMusicUsageDescription	Privacy - Media Library Usage Description
NFC 近距离无线通信	NFCReaderUsageDescription	Privacy - NFC Reader Usage Description

参考文档
Cocoa Keys