在相机胶卷中保存图像并获取资产网址 [英] save image in camera roll and get asset url

问题描述

对于我正在开发的应用，我使用UIImagePickerController拍摄照片并将其存储在相机胶卷中：

for an app I'm developing, I use UIImagePickerController to shoot a picture and store it in camera roll:

- (void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary*)info {
//... some stuff ...

        UIImageWriteToSavedPhotosAlbum([info objectForKey:@"UIImagePickerControllerOriginalImage"], nil, nil, nil);

}

保存图像，现在我需要获取它的参考url所以我尝试枚举相机胶卷并获取最后一张图片，但我总是在拍摄之前得到图像。

the image is saved, now I need to get its reference url so I try to enumerate camera roll and get the last image, but I always get the image before the one I just shot.

任何人都知道如何获得刚刚保存的图片的参考？

Anybody has an idea how to get the reference of the just saved picture?

谢谢，
Max

Thanks, Max

推荐答案

此解决方案应解决问题：

This solution should fix the problem:

    ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
    [library writeImageToSavedPhotosAlbum:((UIImage *)[info objectForKey:UIImagePickerControllerOriginalImage]).CGImage
                                 metadata:[info objectForKey:UIImagePickerControllerMediaMetadata]
                          completionBlock:^(NSURL *assetURL, NSError *error) {
                              NSLog(@"assetURL %@", assetURL);
                          }];

et voila：

assetURL assets-library://asset/asset.JPG?id=1611E84C-24E2-4177-B49A-1C57B4A9C665&ext=JPG

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