iOS用户隐私授权

• 相机
  • Privacy - Camera Usage Description
• 相册
  • 读权限 Privacy - Photo Library Usage Description
  • 写权限 Privacy - Photo Library Additions Usage Description
• 麦克风
  • Privacy - Microphone Usage Description
• 定位
  • Privacy - Location Always Usage Description
  • Privacy - Location When In Use Usage Description
• 通讯录
  • Privacy - Contacts Usage Description

• 通讯录 Privacy - Contacts Usage Description
• 日历 Privacy - Calendars Usage Description
• 蓝牙 Privacy - Bluetooth Peripheral Usage Description
• 本地网络 Privacy - Local Network Usage Description
• 面容/指纹 Privacy - Face ID Usage Description
• 运动与健身 Privacy - Motion Usage Description
• 语音识别(Siri) Privacy - Siri Usage Description
• 健康 Privacy - Health Share Usage Description 、Privacy - Health Update Usage Description
• Home kit Privacy - HomeKit Usage Description
• 媒体与Apple Music Privacy - Media Library Usage Description

    <key>NSCameraUsageDescription</key>            <string>以便使用拍照功能获取图片设置用户头像以及发布动态等</string>
    <key>NSContactsUsageDescription</key>          <string>以便快速填写联系人信息</string>
    <key>NSLocationAlwaysUsageDescription</key>    <string>以便获取附近的人</string>
    <key>NSLocationWhenInUseUsageDescription</key> <string>以便获取附近的人</string>
    <key>NSMicrophoneUsageDescription</key>        <string>以便在个人资料或者聊天中发送语音</string>
    <key>NSPhotoLibraryAddUsageDescription</key>   <string>以便你可以保存你喜欢的图片</string>
    <key>NSPhotoLibraryUsageDescription</key>      <string>用于选取相册中的图片设置用户头像以及发布动态等</string>

注意：该方法只有在未询问过用户授权的情况下生效，也就是只能第一次询问的时候调用
如果第一次调用时点击了不允许，再次监测状态时调用无效，只能提示用户去设置中打开开关。

麦克风 AVCaptureDevice

检测状态

    AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeAudio];
    switch (authStatus) {
        case AVAuthorizationStatusNotDetermined:
            //没有询问是否开启麦克风
            break;
        case AVAuthorizationStatusRestricted:
            //未授权，家长限制
            break;
        case AVAuthorizationStatusDenied:
            //未授权
            break;
        case AVAuthorizationStatusAuthorized:
            //已授权
            break;
        default:
            break;
    }

获取权限

    [AVCaptureDevice requestAccessForMediaType:AVMediaTypeAudio completionHandler:^(BOOL granted) { }];

相机 AVCaptureDevice

检测状态

    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
        AVAuthorizationStatus status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
    }

获取权限

    [AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) { }];

相册 PHPhotoLibrary

检测状态

    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
        PHAuthorizationStatus status = [PHPhotoLibrary authorizationStatus];
        PHAuthorizationStatusNotDetermined = 0,
        PHAuthorizationStatusRestricted,
        PHAuthorizationStatusDenied,
        PHAuthorizationStatusAuthorized,
        PHAuthorizationStatusLimited API_AVAILABLE(ios(14)),
     } else {
         NSLog(@"相册不可用！");
     }

获取权限

    [PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) { }];

定位 CLLocationManager

#import <CoreLocation/CoreLocation.h>
检测状态

    BOOL enable = [CLLocationManager locationServicesEnabled];//是否可用
    CLAuthorizationStatus state = [CLLocationManager authorizationStatus];//授权状态
    
    kCLAuthorizationStatusNotDetermined = 0,   // 用户未授权，即还未弹出OS的授权弹窗
    kCLAuthorizationStatusDenied,              // 用户拒绝定位权限，包括拒绝App或者全局开关关闭
    kCLAuthorizationStatusRestricted,          // 定位服务受限，该状态位用户无法通过设置页面进行改变
    kCLAuthorizationStatusAuthorizedAlways,    // 始终定位，即后台定位
    kCLAuthorizationStatusAuthorizedWhenInUse, // App使用的时候，允许定位
    kCLAuthorizationStatusAuthorized,          // iOS8.0之后已经被废弃

获取权限

    CLLocationManager *locationManager = [[CLLocationManager alloc] init];
    locationManager.delegate = self;
    [locationManager requestAlwaysAuthorization];
    [locationManager requestWhenInUseAuthorization];

通讯录 CNContactStore

#import <Contacts/CNContactStore.h>
检测状态

    CNAuthorizationStatus status = [CNContactStore authorizationStatusForEntityType:CNEntityTypeContacts];
    
    CNAuthorizationStatusNotDetermined = 0, // 用户未授权，即还未弹出OS的授权弹窗
    CNAuthorizationStatusRestricted,        // 定位服务受限，该状态位用户无法通过设置页面进行改变
    CNAuthorizationStatusDenied,            // 用户拒绝定位权限，包括拒绝App或者全局开关关闭
    CNAuthorizationStatusAuthorized         // 已授权

    CNContactStore *contactStore = [[CNContactStore alloc] init];
    [contactStore requestAccessForEntityType:CNEntityTypeContacts completionHandler:^(BOOL granted, NSError * _Nullable error) { }];

跳转到指定的系统设置 UIApplicationOpenSettingsURLString

prefs:root=在苹果审核中已经被列为私有API
prefs:root=bundleID 和 prefs:root=服务都不再支持，调用不会有任何反应！
苹果的要求是不可以再使用prefs:root以及App-Prefs:root的接口来做app内部和系统设置的跳转了。
现在做app系统设置跳转，官方的只能使用UIApplicationOpenSettingURLString.

    NSURL * url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
    if ([[UIApplication sharedApplication] canOpenURL:url]) {
        if (@available(iOS 10.0, *)) {
            [[UIApplication sharedApplication] openURL:url options:@{} completionHandler:^(BOOL success) {
            }];
        }
    }

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