HTTP 라이브 스트리밍과 함께 작동하지 않는 MPMoviePlayerController prepareToPlay

Question

모달보기 컨트롤러 내에 MPMoviePlayerController 개체를 사용하여 HTTP 실시간 스트리밍 비디오를 재생하려고합니다. 이런 코드를 실행하면 모든 것이 잘 동작합니다. MPMoviePlaybackStatePlaying 알림이 표시되고 동영상이 재생됩니다.

- (void)viewDidLoad { 
    [super viewDidLoad]; 

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerPlaybackStateDidChange:) name:MPMoviePlayerPlaybackStateDidChangeNotification object:nil]; 

    NSURL *url = [NSURL URLWithString:@"http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8"]; 
    self.moviePlayerController = [[[MPMoviePlayerController alloc] initWithContentURL:url] autorelease]; 
    self.moviePlayerController.view.frame = CGRectMake(0,0,320,416); 
    self.moviePlayerController.controlStyle = MPMovieControlStyleNone; 
    self.moviePlayerController.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; 
    [self.view addSubview:self.moviePlayerController.view]; 
    self.moviePlayerController.fullscreen = NO; 
    [self.moviePlayerController play]; 
} 

내가 로딩 표시기를 표시 할 수 있도록 prepareToPlay 방법을 사용하는 것을 선호하고, 더 멋진 경험을위한 것입니다. 그러나, 나는이 일을 할 수 없을 것 같습니다. MPMoviePlayerPlaybackStateDidChangeNotification도 호출되지 않고 스트림이 재생되지 않습니다. 액티비티 표시기는 영원히 회전합니다.

나는 prepareToPlay이 전화를 받았음을 확인했지만 그 이후에는 아무 것도 일어나지 않는 것 같습니다. 또한이 코드가 로컬 무비 파일과 잘 작동하는지 확인했습니다. 실패한 HTTP 실시간 스트리밍과 함께있는 것처럼 보입니다. 누구든지 내가 뭘 잘못하고 있는지 알 수 있니?

- (void)viewDidLoad { 
    [super viewDidLoad]; 

    [self.activityIndicator startAnimating]; 

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerPlaybackStateDidChange:) name:MPMoviePlayerPlaybackStateDidChangeNotification object:nil]; 

    NSURL *url = [NSURL URLWithString:@"http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8"]; 
    self.moviePlayerController = [[[MPMoviePlayerController alloc] initWithContentURL:url] autorelease]; 

    [self registerForMovieNotifications]; 
} 

- (void)registerForMovieNotifications { 
    //movie is ready to play notifications 
    if ([self.moviePlayerController respondsToSelector:@selector(loadState)]) { 
     //this is a 3.2+ device 
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerLoadStateChanged:) name:MPMoviePlayerLoadStateDidChangeNotification object:nil];  
     self.moviePlayerController.movieSourceType = MPMovieSourceTypeStreaming; 
     [self.moviePlayerController prepareToPlay]; 
    } else { 
     //pre-3.2 device 
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePreloadDidFinish:) name:MPMoviePlayerContentPreloadDidFinishNotification object:nil]; 
    } 

    //movie has finished notification 
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayBackDidFinish:) name:MPMoviePlayerPlaybackDidFinishNotification object:nil]; 
} 

- (void) moviePlayerPlaybackStateDidChange:(NSNotification*)notification { 
    NSLog(@"playbackDidChanged"); 
    MPMoviePlayerController *moviePlayer = notification.object; 
    MPMoviePlaybackState playbackState = moviePlayer.playbackState; 
    if(playbackState == MPMoviePlaybackStateStopped) { 
     NSLog(@"MPMoviePlaybackStateStopped"); 
    } else if(playbackState == MPMoviePlaybackStatePlaying) { 
     NSLog(@"MPMoviePlaybackStatePlaying"); 
    } else if(playbackState == MPMoviePlaybackStatePaused) { 
     NSLog(@"MPMoviePlaybackStatePaused"); 
    } else if(playbackState == MPMoviePlaybackStateInterrupted) { 
     NSLog(@"MPMoviePlaybackStateInterrupted"); 
    } else if(playbackState == MPMoviePlaybackStateSeekingForward) { 
     NSLog(@"MPMoviePlaybackStateSeekingForward"); 
    } else if(playbackState == MPMoviePlaybackStateSeekingBackward) { 
     NSLog(@"MPMoviePlaybackStateSeekingBackward"); 
    } 
} 

//3.2+ devices 
- (void)moviePlayerLoadStateChanged:(NSNotification*)notification { 
    NSLog(@"load state changed"); 

    //unless state is unknown, start playback 
    if ([self.moviePlayerController loadState] != MPMovieLoadStateUnknown) { 
     [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerLoadStateDidChangeNotification object:nil]; 

     self.moviePlayerController.view.frame = CGRectMake(0,0,320,416); 
     self.moviePlayerController.controlStyle = MPMovieControlStyleNone; 
     self.moviePlayerController.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; 
     [self.view addSubview:self.moviePlayerController.view]; 
     self.moviePlayerController.fullscreen = NO; 
     [self.moviePlayerController play]; 
    } 
} 

//pre 3.2 devices 
- (void) moviePreloadDidFinish:(NSNotification*)notification { 
    // Remove observer 
    [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerContentPreloadDidFinishNotification object:nil]; 
    [self.moviePlayerController play]; 
} 

Answer 1

나는 이유는 모르겠지만, 나는 moviePlayerLoadStateChanged: 방법에서 선 self.moviePlayerController.controlStyle = MPMovieControlStyleNone;을 이동하여이 문제를 해결 할 수 있었다, 그리고 viewDidLoad 방법으로.

누구나 차이가있는 이유는 무엇입니까?