當用戶在UIImagePickerController中拒絕移動和縮放后對照片的權限時，iOS應用程序崩潰

Question

我正在使用默認的UIImagePickerController，並將allowsEditing設置為YES來拍攝照片。 當用戶移動並縮放照片時，操作系統會要求訪問“照片”。 如果用戶拒絕訪問，應用程序將崩潰。

- (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];
}

和UIImagePickerControllerDelegate方法一樣

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

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

    self.profileImage = image;

    [picker dismissViewControllerAnimated:YES completion:nil];
}

崩潰消息：

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

我想知道為什么它應該首先要求訪問照片。 有什么想法嗎？

Answer 1

使用資產框架測試您的應用是否可以訪問照片數據。

  ALAuthorizationStatus status = [ALAssetsLibrary authorizationStatus];

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