Question

我有一个视频播放器，可以从一些给定的网址加载视频并播放。每当给定URL的资源无效且服务器返回错误响应的错误代码时，我都无法获得相同的回调。我订阅了以下通知。

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlaybackStateDidChange:) name:MPMoviePlayerPlaybackStateDidChangeNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(movieFinished:) name:MPMoviePlayerPlaybackDidFinishNotification object:self.playerController];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(movieDurationAvailable:) name:MPMovieDurationAvailableNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(movieLoadStateDidChange:) name:MPMoviePlayerLoadStateDidChangeNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willChangePlayingMovie:) name:MPMoviePlayerNowPlayingMovieDidChangeNotification object:nil];

我正在使用hls视频播放视频。我的媒体有hls和mp4网址。每当hls视频失败时，我都想回到mp4。

编辑：只是为了澄清，没有得到回调意味着通知没有解雇。抱歉混淆。

viewdidload上的代码段

self.playerController = [[MPMoviePlayerController alloc] init];
self.playerController.shouldAutoplay = YES;
self.playerController.controlStyle = MPMovieControlStyleNone;

[self.playerController.view setFrame:self.playerView.bounds];
self.playerController.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
[self.playerController.view translatesAutoresizingMaskIntoConstraints];



[self.playerView addSubview:self.playerController.view];
self.playerController.view.userInteractionEnabled = NO;
self.playerController.view.backgroundColor = [UIColor colorWithRed:0.2 green:0.2 blue:0.2 alpha:1.0];
self.playerController.backgroundView.backgroundColor = [UIColor colorWithRed:0.2 green:0.2 blue:0.2 alpha:1.0];
//To hide top and bottom Bar

self.playerController.view.backgroundColor = [UIColor blackColor];
self.playerController.backgroundView.backgroundColor = [UIColor blackColor];

设置网址时（来自viewdidappear，此处也添加了通知，代码就是开头）

NSURL *fileUrl;
NSString *fileExtension;
fileUrl = self.content.media.hlsUrl;
if ([Reachability reachabilityForInternetConnection].isReachable) {
            [self.playerController setContentURL:fileUrl];

            BOOL isFirstTimeUpdate = [[NSUserDefaults standardUserDefaults] boolForKey:@"IS_FIRST_TIME_UPDATE"];
            if(isFirstTimeUpdate == NO){
                [self.playerController pause];
            }
            else{
                [self.playerController play];
            }
            [self.activityIndicator startAnimating];
        }else{
            self.errorLabel.text = kZErNoInternet;
            self.errorView.hidden = NO;
        }

Answer 1

使用MPMoviePlayerViewController处理错误响应错误代码： -

您已添加此通知

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(movieFinished:) name:MPMoviePlayerPlaybackDidFinishNotification object:self.playerController];

 (void)movieFinished:(NSNotification *)notification
{
    NSDictionary *notificationUserInfo = [notification userInfo];
    NSNumber *resultValue = [notificationUserInfo objectForKey:MPMoviePlayerPlaybackDidFinishReasonUserInfoKey];
    MPMovieFinishReason reason = [resultValue intValue];
    if (reason == MPMovieFinishReasonPlaybackError)
    {
        NSError *mediaPlayerError = [notificationUserInfo objectForKey:@"error"];
        if (mediaPlayerError) 
        {
            NSLog(@"playback failed with error description: %@", [mediaPlayerError localizedDescription]);
        }
        else
        {
            NSLog(@"playback failed without any given reason");
        }
    }
}

刚从这个link获得参考： -

ios MPMoviePlayerController在播放视频时检测到未找到的url

1 个答案: