尝试从 AWS/FMS 直播到 iphone（使用 HLS）

Question

我在 Amazon AWS 上设置了一个运行 Flash Media Server (FMS) 的实例，该实例按照 these 的说明广播 Live HTTP Streaming (HLS)，所以我知道我正在使用适用于 iPhone 的正确流格式进行流式传输.

此外，使用相同的说明，我已确认服务器已启动并正在运行，并且我已成功设置闪存客户端以读取其 HDS 流（用于闪存设备的 HTTP 动态流）。

我编写了这个 iphone 客户端代码来播放流（从 tutorial 窃取，使其可以与本地视频文件一起使用.. 这对我也有用）：

@implementation BigBuckBunnyViewController

-(IBAction)playMovie:(id)sender
{
    NSURL *streamURL = [NSURL URLWithString:@"http://dstvrton8xbej.cloudfront.net/hls-live/livepkgr/_definst_/liveevent/livestream.m3u8"];
    MPMoviePlayerController *moviePlayerContoller = [[MPMoviePlayerController alloc] initWithContentURL:streamURL];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlaybackComplete) name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayerContoller];

    [self.view addSubview:moviePlayerContoller.view];
    moviePlayerContoller.fullscreen = YES;
    [moviePlayerContoller play];

}

- (void)moviePlaybackComplete: (NSNotification *)notification
{
    MPMoviePlayerController *moviePlayerController = [notification object];
    [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification
                                                  object:moviePlayerController];

    [moviePlayerController.view removeFromSuperview];
    [moviePlayerController release];

}

但是当我将代码编译到我的 ipad 上时，我收到了这个错误消息：

2012-07-13 17:45:20.513 BigBuckBunny[3714:607] -[BigBuckBunnyViewController moviePlaybackComplete]: unrecognized selector sent to instance 0x21050080
2012-07-13 17:45:20.524 BigBuckBunny[3714:607] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[BigBuckBunnyViewController moviePlaybackComplete]: unrecognized selector sent to instance 0x21050080'        

来自 Mac documentation NSInvalidArgumentException 当您将无效参数传递给方法时发生，例如需要非 nil 对象的 nil 指针。大家有什么想法吗？

Answer 1

解决方案很简单..基本上是语法错误（lol）..在moviePlaybackComplete之后添加':'

[[NSNotificationCenter defaultCenter] addObserver:self 
                                         selector:@selector(moviePlaybackComplete:) 
                                             name:MPMoviePlayerPlaybackDidFinishNotification   
                                           object:moviePlayerContoller];