Question

我正在使用HCYoutubeParser（https://github.com/hellozimi/HCYoutubeParser）在我的ios应用中播放一些视频。当我尝试播放某些视频时，它似乎无法播放。

代码如下所示：

- (void)playVideo:(id)sender
{
    if (_urlToLoad)
    {
        MPMoviePlayerViewController *player = [[MPMoviePlayerViewController alloc]initWithContentURL:_urlToLoad];
        _mp = player;
        [self presentViewController:_mp animated:YES completion:nil];
    }
}

- (void)submitYouTubeURL:(id)sender {

    [playButton setImage:nil forState:UIControlStateNormal];

    NSURL *url = [NSURL URLWithString:_urlOfYoutube];
    activityIndicator.hidden = NO;
    [HCYoutubeParser thumbnailForYoutubeURL:url thumbnailSize:YouTubeThumbnailDefaultHighQuality completeBlock:^(UIImage *image, NSError *error) {

        if (!error) {
            [playButton setBackgroundImage:image forState:UIControlStateNormal];
            playButton.hidden = NO;

            NSDictionary *qualities = [HCYoutubeParser h264videosWithYoutubeURL:url];
            _urlToLoad  = nil;
            _urlToLoad = [NSURL URLWithString:[qualities objectForKey:@"medium"]];
            NSLog(@"%@",[NSURL URLWithString:[qualities objectForKey:@"medium"]]);
            activityIndicator.hidden = YES;

            [playButton setImage:[UIImage imageNamed:@"play_button"] forState:UIControlStateNormal];
        }
        else {
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error" message:[error localizedDescription] delegate:nil cancelButtonTitle:@"Dismiss" otherButtonTitles:nil];
            [alert show];
        }
    }];
}

提出问题的行是_urlToLoad = [NSURL URLWithString:[qualities objectForKey:@"medium"]];

[NSURL URLWithString：[qualities objectForKey：@“medium”]]返回null ..

我该如何解决这个问题？

Answer 1

在我的情况下，我得到

的0键值对

NSDictionary *qualities = [HCYoutubeParser h264videosWithYoutubeURL:url];

是的，我得到qualities有0个键值对。

我发现HCYoutubeParser.m中的代码，方法+ (NSDictionary *)h264videosWithYoutubeID:(NSString *)youtubeID中的变量signature变量未被初始化，因此我替换了NSString * signature = nil;与NSString *signature = @"";

使用HCYoutubeParser播放YouTube视频

1 个答案: