在iPhone的库中保存录制的视频时出现问题 [英] Problem saving recorded video on iPhone's library

问题描述

我正在尝试使用UIImagePickerController委托将录制的视频保存到库中。它适用于图片，但如果它是一个视频则无法保存，如果我打开照片应用程序后尝试保存视频，我会收到一条消息请等待.Update字符串库，以及带有标签的进度条重建图书馆。我的照片库已恢复，但视频未添加到其中。

I am trying to save a recorded video to the library using the UIImagePickerController delegate. It works fine for pictures but it doesn't save if it's a video, plus after trying to save a video if I open the Photos app, I get a message "Please wait. Updatring library", and a progress bar with the label "Rebuilding library". My photo library is restored but the video was not added to it.

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


    NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];

     if ([mediaType isEqualToString:@"public.image"]){
          UIImage *picture = [info objectForKey:UIImagePickerControllerOriginalImage];
          UIImageWriteToSavedPhotosAlbum(picture, nil, nil, nil);
    } 
     else if ([mediaType isEqualToString:@"public.movie"]){

          NSString* m_objMediaURL= [info objectForKey:UIImagePickerControllerMediaURL];
          NSLog(@"URL is %@", m_objMediaURL);
          UISaveVideoAtPathToSavedPhotosAlbum(m_objMediaURL, nil, nil, nil);
     }

     [self dismissModalViewControllerAnimated:YES];

}

上面的NSLog输出如下：

The NSLog above outputs the following:

URL is 
file://localhost/private/var/mobile/Applications/3800A5FB-2A96-4A7A-85DF-B635E8D9A66C/tmp/capture-T0x1061f0.tmp.JMdxHq/capturedvideo.MOV

有没有人实现过这样的方法，可以指点我请问正确的方向？

Has anyone implemented such method and can point me to the right direction please?

谢谢。

推荐答案

我我想我发现了一个问题。

I think I see an issue.

NSString * m_objMediaURL = [info objectForKey：UIImagePickerControllerMediaURL];

类型错误。我正常工作的代码使用：

Is the wrong type. My properly working code uses:

NSURL * url = [[[info objectForKey：UIImagePickerControllerMediaURL] copy] autorelease];

我复制它而不是保留它，因为在拾取器视图被解除后我在低内存情况下遇到了一些问题。虽然您使用的保存方法可能有效，但我使用的是更新更好（因为回调块）：

I copy it instead of retaining it because of some issues I have had in low memory situations after the picker view is dismissed. Although the save method you use might work, I use the newer and better (because of the callback block):

ALAssetsLibrary* library = [[[ALAssetsLibrary alloc] init] autorelease];
[library writeVideoAtPathToSavedPhotosAlbum:url
                            completionBlock:^(NSURL *assetURL, NSError *error){/*notify of completion*/}];

此外，你应该使用 kUTTypeMovie 和 kUTTypeImage 而不是硬编码 @public.image 。

Also, you should be using kUTTypeMovie and kUTTypeImage instead of hard coding @"public.image.

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