iphone - YouTube Video GData API

我正在尝试让YouTube在我的iOS应用程序中运行。我已经成功检索了特定用户的视频列表，但是我正在努力实现didSelectRowAtIndexPath，以便将所选视频嵌入到单独的viewController中。这是我遇到麻烦的代码:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
DetailViewController *detailController = [self.storyboard instantiateViewControllerWithIdentifier:@"DetailController"];

    GDataEntryBase *entry2 = [[feed entries] objectAtIndex:indexPath.row];
    videoArray = [[(GDataEntryYouTubeVideo *)entry2 mediaGroup] mediaContents];
    NSString *tempUrl = [videoArray objectAtIndex:0];
    NSLog(@"The URL is:%@",tempUrl);
    detailController.videoString = tempUrl;

    [self.navigationController pushViewController:detailController animated:YES];

}

每次运行此命令时，都会在“detailController.videoString = tempUrl;”处得到一个断点。

我可以通过NSLog看到tempUrl字符串填充了以下内容:

The URL is:GDataMediaContent 0x69c76a0: {url:https://www.youtube.com/v/s36krFdPmYQ?version=3&f=user_uploads&app=youtube_gdata type:application/x-shockwave-flash medium:video isDefault:true expression:full duration:1913}

如何仅从GData API中提取视频网址？

预先感谢您的回复。

我进行了以下更改，现在获得了正确的URL字符串:

GDataEntryBase *entry2 = [[feed entries] objectAtIndex:indexPath.row];
    NSArray *mediaContents = [[(GDataEntryYouTubeVideo *)entry2 mediaGroup] mediaContents];
    GDataMediaContent *flashContent = [GDataUtilities firstObjectFromArray:mediaContents withValue:@"application/x-shockwave-flash" forKeyPath:@"type"];
    NSLog(@"The URL is:%@",[flashContent URLString]);
    detailController.videoString = [flashContent URLString];

这给了我来自NSLog的以下信息:

The URL is:https://www.youtube.com/v/s36krFdPmYQ?version=3&f=user_uploads&app=youtube_gdata

但是我仍然在'detailController.videoString = [flashContent URLString];

最佳答案

我能够解决这个问题。我在两个ViewController之间添加了Modal segue，并且还稍微修改了我的代码。这是添加segue后最终使用的代码:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    DetailViewController *detailController = [self.storyboard instantiateViewControllerWithIdentifier:@"DetailController"];
    GDataEntryBase *entry2 = [[feed entries] objectAtIndex:indexPath.row];
    NSString *title = [[entry2 title] stringValue];
    NSArray *contents = [[(GDataEntryYouTubeVideo *)entry2 mediaGroup] mediaContents];
    GDataMediaContent *flashContent = [GDataUtilities firstObjectFromArray:contents withValue:@"application/x-shockwave-flash" forKeyPath:@"type"];
    NSString *tempURL = [flashContent URLString];

    detailController.videoString = tempURL;
    detailController.titleString = title;
    [self.navigationController pushViewController:detailController animated:YES];

}

您可以在此处查看完整的YouTubeDemo应用程序代码:
https://gist.github.com/2501684