iOS14 相册权限 limited状态下可以访问整个相册

获取权限的代码： PHAccessLevel level = PHAccessLevelReadWrite;
    // 请求权限，需注意 limited 权限尽在 accessLevel 为 readAndWrite 时生效
    [PHPhotoLibrary requestAuthorizationForAccessLevel:level handler:^(PHAuthorizationStatus status) {
     switch (status) {
       case PHAuthorizationStatusLimited:
       {
         NSLog(@"---limited---");
       }
          
         break;
       case PHAuthorizationStatusDenied:
         NSLog(@"---denied---");
         break;
       case PHAuthorizationStatusAuthorized:
         NSLog(@"---authorized---");
         break;
       default:
         NSLog(@"---????---");
         break;
     }
    }];
调用唤起相册的方法：
 PHPickerConfiguration *configuration = [[PHPickerConfiguration alloc] init];
     configuration.filter = [PHPickerFilter imagesFilter]; // 可配置查询用户相册中文件的类型，支持三种
    configuration.selectionLimit = 0; // 默认为1，为0时表示可多选。
  configuration.preferredAssetRepresentationMode = 2;
     PHPickerViewController *picker = [[PHPickerViewController alloc] initWithConfiguration:configuration];
     picker.delegate = self;
     // picker vc，在选完图片后需要在回调中手动 dismiss
    [self presentViewController:picker animated:YES completion:^{
    
    }];
在状态为limited状态的情况下，可以访问整个相册