在开始的MPMoviePlayerController问题

Question

我有问题的MPMoviePlayerController，因为当我在全屏存在启动它，但歌曲还在播放。我加入了MPMoviePlayerDidExitFullscreenNotification通知，它说，在视频开始弹唱它存在于整个屏幕。这里是我的代码：

_multimediaPlayer = [[MPMoviePlayerController alloc] init];
_multimediaPlayer.controlStyle = MPMovieControlStyleDefault;
_multimediaPlayer.initialPlaybackTime = 0;

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(videoPlayBackDidFinish:) 
                                                 name:MPMoviePlayerPlaybackDidFinishNotification 
                                               object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(videoPlayerDidExitFullscreen:) 
                                                 name:MPMoviePlayerDidExitFullscreenNotification
                                               object:nil];

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

    NSString *path = [NSString stringWithFormat:@"%@/mag_%d/%@", [FMUtils documentsFolderPathWithFile:nil], _magID, _pageObject.fileName];
    if ([FMUtils fileExistsAtPath:path]) {
        _multimediaPlayer.contentURL = [NSURL fileURLWithPath:path];
    } else {
        _multimediaPlayer.contentURL = [NSURL URLWithString:[NSString stringWithFormat:@"%@%@", self.dataURL, _pageObject.fileName]];
    }

    CGSize objectViewSize = self.frame.size;
    _multimediaPlayer.view.frame = CGRectMake(0, 0, objectViewSize.width, objectViewSize.height);
    [self addSubview:_multimediaPlayer.view];

    if (_pageObject.blink)  {
        [_multimediaPlayer setFullscreen:YES animated:YES];
    }

    [_multimediaPlayer play];

大多数的视频时，不会被下载并且需要流呢它发生的时间。

你有任何想法，为什么是这样呢？

Answer 1

问题解决了，而我不听MPMoviePlayerPlaybackStateDidChangeNotification。