didFinishPickingMediaWithInfo获取图像文件名

Question

我正在尝试从相机中获取图像文件名。我看过许多关于使用UIImagePickerControllerReferenceURL或UIImagePickerControllerMediaURL检索文件名的帖子，但这只会得到类似于：//asset/asset.JPG？id = D1D715A8-6956-49FF-AF07-CE60FE93AE32＆amp; etc = JPG的文件名。我相信这是因为图像尚未保存，因此像img0001.jpg这样的名称不可用。

有谁知道如何获取文件名？我在起诉我需要在UIImageWriteToSavedPhotosAlbum之后做这个，但我似乎无法弄明白。

我已经多次看到这个问题了，但似乎没有人真的＆＃39;回答它，他们只是总是从选择器中选择的图像中提供文件名而不是来自相机。

感谢您的帮助

**更新：

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    [self.popoverController dismissPopoverAnimated:true];

    NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
    [self dismissViewControllerAnimated:YES completion:nil];
    if ([mediaType isEqualToString:(NSString *)kUTTypeImage])
    {
        UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
        imageView.image = image;
        if (newMedia)
        {
            UIImageWriteToSavedPhotosAlbum(image,
                                           self,
                                           @selector(image:finishedSavingWithError:contextInfo:),
                                           nil);

            NSURL *refURL = [info valueForKey:UIImagePickerControllerMediaURL];

            // define the block to call when we get the asset based on the url (below)
            ALAssetsLibraryAssetForURLResultBlock resultblock = ^(ALAsset *imageAsset)
            {
                ALAssetRepresentation *imageRep = [imageAsset defaultRepresentation];
                NSLog(@"[imageRep filename] : %@", [imageRep filename]);
            };
            // get the asset library and fetch the asset based on the ref url (pass in block above)
            ALAssetsLibrary* assetslibrary = [[ALAssetsLibrary alloc] init];
            [assetslibrary assetForURL:refURL resultBlock:resultblock failureBlock:nil];
        }
    }
}

我上面的代码，但是当记录imageRep文件名时，它为空。