MPMoviePlayerController在四秒后停止

Question

我正在尝试设置一个非常简单的视频播放器。 （iOS 5.1，Xcode 4.3.1）

-(void)playMedia {
NSString *movieFile = [[NSBundle mainBundle] pathForResource:@"Movie" ofType:@"m4v"];
MPMoviePlayerController *moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:[NSURL fileURLWithPath:movieFile]];

[moviePlayer prepareToPlay];
moviePlayer.view.frame = self.view.bounds;
moviePlayer.scalingMode = MPMovieScalingModeAspectFit;
moviePlayer.movieSourceType = MPMovieSourceTypeFile;
moviePlayer.fullscreen = YES;
moviePlayer.controlStyle = MPMovieControlStyleFullscreen;
[self.view addSubview: moviePlayer.view];

[[NSNotificationCenter defaultCenter] addObserver:self 
                                         selector:@selector(playMediaFinished:) 
                                             name:MPMoviePlayerPlaybackDidFinishNotification 
                                           object:moviePlayer];
[moviePlayer play];
}

调用时效果很好，但只播放4秒钟，然后出现黑屏。如果我在播放期间点按屏幕，它将播放整个序列。如果我停止点击屏幕四秒钟，则会出现黑屏。

我缺少什么？

库尔特

---

编辑版本播放正常。

在界面文件中：

@property (nonatomic,strong) MPMoviePlayerController *myMovieController;

在.m文件中：

-(void)playMedia {
NSString *movieFile = [[NSBundle mainBundle] pathForResource:@"Movie" ofType:@"m4v"];
MPMoviePlayerController *moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:[NSURL fileURLWithPath:movieFile]];

[moviePlayer prepareToPlay];
moviePlayer.view.frame = self.view.bounds;
moviePlayer.scalingMode = MPMovieScalingModeAspectFit;
moviePlayer.movieSourceType = MPMovieSourceTypeFile;
moviePlayer.fullscreen = YES;
moviePlayer.controlStyle = MPMovieControlStyleFullscreen;

self.myMovieController = moviePlayer;
[self.view addSubview: self.myMovieController.view];

[[NSNotificationCenter defaultCenter] addObserver:self 
                                         selector:@selector(playMediaFinished:) 
                                             name:MPMoviePlayerPlaybackDidFinishNotification 
                                           object:moviePlayer];
[self.myMovieController play];
}

Answer 1

如果你正在使用ARC我相信你需要保留外部的moviePlayer。我自己就把它分配给了一个新的房产。 HTH

Answer 2

解决方案是播放器必须是视图控制器的实例变量或属性。 即我们必须使用MPMoviePlayerController的实例

@property（非原子，强）MPMoviePlayerController * myMovieController;