1. 首页
  2. 问答
  3. MpMoviePlayer在停止事件后加载音频

MpMoviePlayer在停止事件后加载音频

2011-01-21 72 views
0

我的应用程序已经结束了95％，并且我有一个非常讨厌的错误，我真的需要一些帮助。 我有表流视图列表>我选择电影，它加载>我已覆盖与停止，暂停，音量和滚动视图与流切换流前一次播放时。 当我开始应用程序时，一切正常，所有流都可以正常工作。 但是，当我点击停止按钮，当前流停止和mpmovieplayer关闭，我再次从表开始。停止按钮的代码是这样（我的子类mpmovieplayer）：MpMoviePlayer在停止事件后加载音频

- (void) StopAndDismiss: (NSNotification *) notification 
{ 
    [mp stop]; // is MPMoviePlayerController object 
    [self dismissModalViewControllerAnimated:YES]; 
}

然后，我选择从表中的一些数据流，并且过程是相同的节目的MPMoviePlayerController，负载电影代码：

-(void) ChannelFromMainChannelPicker: (NSNotification *)note 
{ 
    NSString *stringFromNote = (NSString *)[note object]; 

    NSString *title = [[NSString alloc] initWithFormat:@"%@", stringFromNote]; 

    cPlayer = [[CustomMoviePlayerController alloc] initWithUrlPath:title]; 
    [self presentModalViewController:cPlayer animated:NO]; 

    [cPlayer readyPlayer:stringFromNote]; 

    [title release]; 
} 
- (void)readyPlayer:(NSString *)p_url 
{ 
    if(mp != nil) 
    {   
     NSString *title = [[NSString alloc] initWithFormat:@"%@", p_url]; 
     NSURL *n = [[NSURL alloc]initWithString:title]; 

     [mp setContentURL:n]; 

     mp.initialPlaybackTime = -1.0; 

     [title release]; 
     [n release]; 

     [mp play];  
    } 
    else 
    { 
     mp = [[MPMoviePlayerController alloc] initWithContentURL:movieUrlPath]; 

     //[mp setAllowsWirelessPlayback:YES]; 

     if ([mp respondsToSelector:@selector(loadState)]) 
     { 
      // Set movie player layout 
      [mp setControlStyle:MPMovieControlStyleNone]; 
      [mp setFullscreen:YES]; 

      // May help to reduce latency 
      [mp prepareToPlay]; 

      // Register that the load state changed (movie is ready) 
      [[NSNotificationCenter defaultCenter] addObserver:self 
                selector:@selector(moviePlayerLoadStateChanged:) 
                 name:MPMoviePlayerLoadStateDidChangeNotification 
                 object:nil]; 

      [[NSNotificationCenter defaultCenter] addObserver:self 
                selector:@selector(SwitchToAnotherStreamUrl:) 
                 name:@"notiSwitchToAnotherStreamUrl" 
                 object:nil]; 

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

      [[NSNotificationCenter defaultCenter] addObserver:self 
                selector:@selector(PauseStream:) 
                 name:@"notiPauseStream" 
                 object:nil]; 

      [[NSNotificationCenter defaultCenter] addObserver:self 
                selector:@selector(StopAndDismiss:) 
                 name:@"notiStopAndDismiss" 
                 object:nil];  
     }  
    } 

    // Register to receive a notification when the movie has finished playing. 
    [[NSNotificationCenter defaultCenter] addObserver:self 
              selector:@selector(moviePlayBackDidFinish:) 
               name:MPMoviePlayerPlaybackDidFinishNotification 
               object:nil]; 
}

但是，当我现在从覆盖流列表改变为其他流，只有音频有效，但没有视频（只是黑屏）。但我再次加载相同的流，它加载正常。但每当我按STOP按钮后开始流式播放时，每当我第一次加载音频时，就需要再次调用它才能工作。 在我的自定义视频播放器我重载这个方法，也许这里是一些问题：

- (void) moviePlayerPlaybackStateDidChange: (NSNotification *) notification 
{ 
    if(mp.playbackState == MPMoviePlaybackStateStopped) 
    { 
     NSLog(@"Loading so display activity indicator"); 
     [[NSNotificationCenter defaultCenter] postNotificationName:@"notiShowLoader" object:nil]; 

    } 
    else if (mp.playbackState == MPMoviePlaybackStatePlaying) 
    { 
     NSLog(@"Done with loading, hide activity indicator"); 
     [[NSNotificationCenter defaultCenter] postNotificationName:@"notiHideLoader" object:nil];  

     [[NSNotificationCenter defaultCenter] postNotificationName:@"notiBringCPToFront" object:nil]; 
    } 
    else if (mp.playbackState == MPMoviePlaybackStatePaused) 
    { 
     NSLog(@"Movie is paused"); 
    } 
}

PS 有没有办法，我可以检查被加载音频和视频不，不管怎样迫使它重新载入播放器什么办法？

我添加NSlog检查播放状态。而也有一些是有线的，我叫STOP下次我尽量发挥它的流调用多次：

0 MPMoviePlaybackStateStopped, 
1 MPMoviePlaybackStatePlaying, 
2 MPMoviePlaybackStatePaused, 
3 MPMoviePlaybackStateInterrupted, 
4 MPMoviePlaybackStateSeekingForward, 
5 MPMoviePlaybackStateSeekingBackward 


first time from table view 
2011-01-21 13:46:04.865[3561:207] CURRENT PLAYBACK STATE ID = 1 

second time from overlay 
2011-01-21 13:46:30.338[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:46:30.461[3561:207] CURRENT PLAYBACK STATE ID = 1 

STOP button press 
2011-01-21 13:47:14.797[3561:207] CURRENT PLAYBACK STATE ID = 0 

from table view 
2011-01-21 13:47:31.123[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:47:31.123[3561:207] CURRENT PLAYBACK STATE ID = 1 

from overlay again (ONLY AUDIO) 
2011-01-21 13:47:50.001[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:47:50.001[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:47:50.119[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:47:50.119[3561:207] CURRENT PLAYBACK STATE ID = 1 
2011-01-21 13:47:50.148[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:47:50.148[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:47:50.149[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:47:50.149[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:47:50.150[3561:207] CURRENT PLAYBACK STATE ID = 1 
2011-01-21 13:47:50.150[3561:207] CURRENT PLAYBACK STATE ID = 0 

third time (now works and audio and video) 
2011-01-21 13:48:21.752[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:48:21.752[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:48:21.852[3561:207] CURRENT PLAYBACK STATE ID = 1 
2011-01-21 13:48:21.852[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:48:21.855[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:48:21.855[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:48:21.856[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:48:21.856[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:48:21.858[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:48:21.858[3561:207] CURRENT PLAYBACK STATE ID = 1 

STOP second time 
2011-01-21 13:49:39.046[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:49:39.046[3561:207] CURRENT PLAYBACK STATE ID = 0 

again load from table 
2011-01-21 13:50:00.155[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:00.155[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:00.155[3561:207] CURRENT PLAYBACK STATE ID = 1 

from overlay 
2011-01-21 13:50:27.211[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.211[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.211[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.325[3561:207] CURRENT PLAYBACK STATE ID = 1 
2011-01-21 13:50:27.326[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.326[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.333[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.333[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.333[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.334[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.335[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.335[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.336[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.336[3561:207] CURRENT PLAYBACK STATE ID = 1 
2011-01-21 13:50:27.337[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.339[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.339[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.339[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.340[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.340[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.340[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.341[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.341[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:50:27.342[3561:207] CURRENT PLAYBACK STATE ID = 1 

again from overlay (only audio) 

2011-01-21 13:56:56.198[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.198[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.198[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.335[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.335[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.335[3561:207] CURRENT PLAYBACK STATE ID = 1 
2011-01-21 13:56:56.338[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.338[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.338[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.339[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.339[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.340[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.341[3561:207] CURRENT PLAYBACK STATE ID = 1 
2011-01-21 13:56:56.341[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.341[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.359[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.359[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.359[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.360[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.360[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.360[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.361[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:56:56.361[3561:207] CURRENT PLAYBACK STATE ID = 1 
2011-01-21 13:56:56.361[3561:207] CURRENT PLAYBACK STATE ID = 0 

same icon again (works) 
2011-01-21 13:57:31.115[3561:207] CURRENT PLAYBACK STATE ID = 1 
2011-01-21 13:57:31.115[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.115[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.118[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.118[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.118[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.119[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.119[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.119[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.120[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.120[3561:207] CURRENT PLAYBACK STATE ID = 1 
2011-01-21 13:57:31.121[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.131[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.131[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.131[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.132[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.132[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.132[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.133[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.134[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:57:31.134[3561:207] CURRENT PLAYBACK STATE ID = 1 

STOP again 
2011-01-21 13:58:17.318[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:58:17.318[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:58:17.318[3561:207] CURRENT PLAYBACK STATE ID = 0 

play from table 
2011-01-21 13:58:36.085[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:58:36.085[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:58:36.085[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:58:36.085[3561:207] CURRENT PLAYBACK STATE ID = 1 

STOP 
2011-01-21 13:58:53.599[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:58:53.599[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:58:53.599[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:58:53.600[3561:207] CURRENT PLAYBACK STATE ID = 0 

PLAY from table again 
2011-01-21 13:58:57.236[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:58:57.236[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:58:57.236[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:58:57.236[3561:207] CURRENT PLAYBACK STATE ID = 0 
2011-01-21 13:58:57.236[3561:207] CURRENT PLAYBACK STATE ID = 1

来源

2011-01-21 1110

回答

1

好初学者的错误，我不知道，我需要当我关闭我的自定义删除所有观察者电影播放器​​。这个解决的问题：

[mp stop]; 
    [mp.view removeFromSuperview];  
    [self dismissModalViewControllerAnimated:YES]; 

    [[NSNotificationCenter defaultCenter] removeObserver:self];

来源

2011-01-28 11:00:04 1110

相关问题

 相关问题