iOS系统权限检测（位置，相机，相册，麦克风，通知）

我最近通过xcode上传到AppStrore遇到了一次成功的上传，但是在iTunes的MyApps中找不到构建版本〜，稍后将通过查询信息来查找. 这是因为~~ markmarkmark是由于在申请相应许可时未在值中填写相应内容而引起的. 愚蠢的哭泣

由于Apple严格控制获取用户的隐私权，因此在获取用户的相机/相册/位置/通知权限时，必须先由用户手动授权，然后才能获取. 故事就是从这样的场景开始的.

问: 我需要做什么才能获得相应的权限？

A: 需要在info.plist中预先设置相应的许可密钥值ios 相机相册权限，如下所示

Privacy - Camera Usage Description -> 相机
Privacy - Microphone Usage Description -> 麦克风
Privacy - Photo Library Usage Description -> 读取相册
Privacy - Photo Library Additions Usage Description -> 保存图片至相册
Privacy - NSLocationAlwaysUsageDescription -> 始终获取地理位置
Privacy - NSLocationWhenInUseUsageDescription -> 使用时获取地理位置
PS：位置授权二选一即可

在使用相应功能（例如打开相册）时，系统会弹出一个框ios 相机相册权限，询问用户授权.

问: 如果用户不同意授权或拒绝授权，如何确保使用相关功能时提示用户打开权限？

A: 需要检测相应的权限状态，

如果未授权用户---->提示用户进行授权（系统行为）

如果用户之前拒绝授权->提示用户启用授权（应用实现）

下面

+(BOOL)detectionMediaState:(void(^)())authorizedBlock
{
   BOOL isAvalible = NO;
   NSString *mediaType = AVMediaTypeAudio; 
   AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:mediaType];
   //用户尚未授权->申请权限
   if (authStatus == AVAuthorizationStatusNotDetermined)
   {
       [AVCaptureDevice requestAccessForMediaType:mediaType completionHandler:^(BOOL granted) {
       
       if(granted)
        {
            if (authorizedBlock)
            {
                authorizedBlock();
            }
        }}];
   }
   //用户已经授权
   else if (authStatus == AVAuthorizationStatusAuthorized)
   {
        isAvalible = YES;
    
        if (authorizedBlock)
        {
            authorizedBlock();
        }
   }
   //用户拒绝授权
   else
   {
       //提示用户开启麦克风权限
       [SystemManager openSettingPagewithMessage:@"麦克风"];
   }
   
   return isAvalible;
   
}

+(BOOL)detectionPhotoState:(void(^)())authorizedBlock
 {
     BOOL isAvalible = NO;
     if (iOS8OrLater)
     {
         PHAuthorizationStatus authStatus = [PHPhotoLibrary authorizationStatus];
    
         //用户尚未授权
         if (authStatus == PHAuthorizationStatusNotDetermined)
         {
             [PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
            
             if (status == PHAuthorizationStatusAuthorized)
             {
                if (authorizedBlock)
                {
                    authorizedBlock();
                }
             }}];
          }
          //用户已经授权
          else if (authStatus == PHAuthorizationStatusAuthorized)
          {
              isAvalible = YES;
        
              if (authorizedBlock)
              {
                 authorizedBlock();
              }
          }
          //用户拒绝授权
          else
          {
              //提示用户开启相册权限
              [SystemManager openSettingPagewithMessage:@"照片"];
          }
      }
      else
      {
          ALAuthorizationStatus authStatus = [ALAssetsLibrary authorizationStatus];
    
         //用户已经授权
         if (authStatus == ALAuthorizationStatusAuthorized)
         {
             isAvalible = YES;
        
             if (authorizedBlock)
             {
                 authorizedBlock();
             }
         }
         //用户拒绝授权 
         else
         {
             //提示用户开启相册权限
             [SystemManager openSettingPagewithMessage:@"照片"];
         }
      }
      return isAvalible;
}

+(BOOL)detectionCameraState:(void(^)())authorizedBlock
{
    BOOL isAvalible = NO;
    AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
    
    //用户尚未授权
    if (authStatus == AVAuthorizationStatusNotDetermined)
    {
        [AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
        
            if (granted)
            {
                if (authorizedBlock)
                {
                    authorizedBlock();
                }
            }
        }];
    }
    //用户已经授权
    else if (authStatus == AVAuthorizationStatusAuthorized)
    {
        isAvalible = YES;
    
        if (authorizedBlock)
        {
            authorizedBlock();
        }
    }
    //用户拒绝授权
    else
    {
        //提示用户开启相机权限
        [SystemManager openSettingPagewithMessage:@"相机"];
    
    }
    return isAvalible;
}

+(BOOL)detectionNotificationState:(void(^)())authorizedBlock
{
    BOOL isAvalible = NO;
    if (iOS8OrLater)
    {
        //用户拒绝授权
        if ([UIApplication sharedApplication].currentUserNotificationSettings.types == UIUserNotificationTypeNone)
        {
            isAvalible = NO;
        
            //提示用户开启通知权限
            [SystemManager openSettingPagewithMessage:@"通知"];
        }
        else
        {
            isAvalible = YES;
        }
    }
    return isAvalible;
}

+(BOOL)detectionLocationState:(void(^)())authorizedBlock
{
    BOOL isAvalible = NO;
    CLAuthorizationStatus  authStatus = [CLLocationManager authorizationStatus];
    if (iOS8OrLater)
    {
        //用户尚未授权
        if (authStatus == kCLAuthorizationStatusNotDetermined)
        {                
               //检测位置服务是否可用   
               if([CLLocationManager locationServicesEnabled])      
               {
    
                    if(!_locationManager)
                    {
                        _locationManager = [[CLLocationManager alloc] init];
        
                        if([_locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)])
                        {
                            [_locationManager requestWhenInUseAuthorization];
                         }
        
                        //设置代理
                        [_locationManager setDelegate:self];
                        //设置定位精度
                        [_locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
                        //设置距离筛选
                        [_locationManager setDistanceFilter:100];
                        [_locationManager startUpdatingHeading];
                    } 
                    else 
                    {
                        //开始定位
                        [_locationManager startUpdatingLocation];
                    }
           }
           else
           {
               //提示用户打开定位权限
               [SystemManager openSettingPagewithMessage:@"定位"];
           }
        }
        //用户已经授权
        else if (authStatus == kCLAuthorizationStatusAuthorizedAlways||authStatus == kCLAuthorizationStatusAuthorizedWhenInUse)
        {
            isAvalible = YES;
        
            if (authorizedBlock)
            {
                authorizedBlock();
            }
        }
        //用户决绝授权
        else
        {
            //提示用户打开定位权限
            [SystemManager openSettingPagewithMessage:@"定位"];
        }
    }
    return isAvalible;
}

Q: 提示用户打开相应的权限. 我可以直接跳到相应的切换页面吗？

A: 可能是iOS8之后的版本

+(void)openSettingPagewithMessage:(NSString *)message
{
    if (iOS8OrLater)
    {
         [[SystemManager shareManager] showSystemAlertwithTitle:@"提示" message:[NSString stringWithFormat:@"为了更好的体验功能，请到设置页面->隐私->%@，将XX对应开关开启",message] cancelButtonTitle:@"下次提醒" otherButtonTitles:@"去设置" baseController:nil resultBlock:^(NSInteger index) {
        
            if (index == 1)
            {
                NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
                if ([[UIApplication sharedApplication] canOpenURL:url])
                {
                    [[UIApplication sharedApplication] openURL:url];
                }
            }
        
        }];
    
    }
    //iOS8以下
    else
    {
        [[SystemManager shareManager] showSystemAlertwithTitle:@"提示" message:[NSString stringWithFormat:@"为了更好的体验功能，请到设置页面->隐私->%@，将XX对应开关开启",message] cancelButtonTitle:@"我知道了" otherButtonTitles:nil baseController:nil resultBlock:nil];
    }
}
XX为App的名字

谢谢大家.

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