当用户在 UIImagePickerController 中移动和缩放后拒绝对照片的权限时，iOS 应用程序崩溃

Question

我正在使用默认的 UIImagePickerController 并将 allowsEditing 设置为 YES 来拍照。当用户移动和缩放照片时，操作系统会请求访问“照片”。如果用户拒绝访问，应用程序会崩溃。

- (void)openCamera
{
    UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
    imagePickerController.editing = YES;
    imagePickerController.allowsEditing = YES;
    imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
    imagePickerController.delegate = self;
    [self presentViewController:imagePickerController animated:YES completion:nil];
}

UIImagePickerControllerDelegate 方法是这样的

- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {

    UIImage *image = info[UIImagePickerControllerEditedImage];
    if (!image) {
        image = info[UIImagePickerControllerOriginalImage];
    }

    self.profileImage = image;

    [picker dismissViewControllerAnimated:YES completion:nil];
}

崩溃信息:

*** This application is not allowed to access Photo data.

我想知道为什么它首先要请求访问照片。有什么想法吗？

Answer 1

使用 Assets Framework 测试您的应用是否可以访问照片数据。

  ALAuthorizationStatus status = [ALAssetsLibrary authorizationStatus];

  if(status==ALAuthorizationStatusAuthorized) {
        ..your code...
  }