iphone - 在 IOS 5 中从 UIImagePickerController 保存视频

Question

到目前为止，我一直使用这段代码来保存从 UIImagePickerController 获取的视频:

        NSURL *url = [info objectForKey:UIImagePickerControllerMediaURL];

        NSData *videoData = [NSData dataWithContentsOfURL:url];
        path = [kFilesSaveDirectory stringByAppendingFormat:@"%@/Vid%d.mov",album.albumName,album.lastfile];
        path2 = [kFilesSaveDirectory stringByAppendingFormat:@"%@/VidImg%d.png",album.albumName,album.lastfile];

        [videoData writeToFile:path atomically:NO];

        [[videoPlayer moviePlayer] setContentURL:[NSURL URLWithString:path]];
        UIImage *image = [[videoPlayer moviePlayer] thumbnailImageAtTime:1.0 timeOption: MPMovieTimeOptionNearestKeyFrame];
        [[videoPlayer moviePlayer] setContentURL:nil];
        [UIImagePNGRepresentation(image) writeToFile:path2 atomically:YES];

直到现在在 ios 4 中它工作没有任何问题，但是当我现在尝试在 ios 5 中使用它时，它有两个问题:

1. 它给我的 img 为 nil。

2.当我想用这段代码显示视频时，它不显示视频:

[[videoPlayer moviePlayer] setContentURL:[NSURL URLWithString:choosen.bigpath]];

[self presentModalViewController:videoPlayer animated:YES];

[[videoPlayer moviePlayer] play];

Answer 1

这对我有用 -

NSURL *mediaUrl = [info objectForKey:UIImagePickerControllerMediaURL];

        MPMoviePlayerController *moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:mediaUrl];
        moviePlayer.shouldAutoplay = NO;
        thumbnail = [[moviePlayer thumbnailImageAtTime:0.0 timeOption:MPMovieTimeOptionNearestKeyFrame] retain];
        [moviePlayer release];
        [layer release];

我将此代码添加到此委托(delegate)

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

希望它也对你有用:)