Question

直到现在,我一直使用这一密码来保存从<条码>上获取的录像。

        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,第4章中,它一直没有任何问题,但当我试图在第5章中使用它时,它有两个问题:

it give me nil for the img.

2. 在我想用这部法典播放录像时,不要播放:

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

[self presentModalViewController:videoPlayer animated:YES];

[[videoPlayer moviePlayer] play];

Answer 1

This is working for me -

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];

我向这位代表补充了这一守则。

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

希望也为你们工作:

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