MPMoviePlayerViewController退出后背景

当我的应用程序进入后台并返回时，模式视图关闭。为什么会发生这种情况？我试着暂停和关闭。我启用了ARC，如果它是一个有用的信息。MPMoviePlayerViewController退出后背景

MPMoviePlayerViewController * player = [[MPMoviePlayerViewController alloc] initWithContentURL:targetURL]; 
[player.moviePlayer prepareToPlay]; 
[self presentMoviePlayerViewControllerAnimated:player];

来源

2012-04-12 Nikita Ilyasov

我有同样的问题。你解决了吗？ – zvjerka24 2012-09-21 09:21:30

这里是解决方案http://stackoverflow.com/questions/8344877/mpmovieplayerviewcontroller-becomes-black-when-enters-background – zvjerka24 2012-09-21 11:18:03

在跨越这种情况下，任何人都跌倒（像我一样之前，我发现我自己的解决方案），我是能够防止MPMoviePlayerViewController从退出时应用背景通过继承它，并删除它作为UIApplicationDidEnterBackgroundNotification观察员：

- (id)initWithContentURL:(NSURL *)contentURL { 

    self = [super initWithContentURL:contentURL]; 

    if (self){ 

     [[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationDidEnterBackgroundNotification object:nil]; 

    } 

    return self; 
}

来源

2013-05-16 21:55:28 ChrisH

下面是完整的代码，可以帮助你

// Call this to start initialization and play movie 
-(void)prepareMoviePlayer:(NSURL *)moviePath 
{ 
    moviePlayerViewController = [[MPMoviePlayerViewController alloc] initWithContentURL:moviePath]; 

    if ([[moviePlayerViewController moviePlayer] respondsToSelector:@selector(loadState)]) 
    { 
     [[moviePlayerViewController moviePlayer] setControlStyle:MPMovieControlStyleNone]; 
     [[moviePlayerViewController moviePlayer] setFullscreen:YES]; 
     [[moviePlayerViewController moviePlayer] prepareToPlay]; 
     [[NSNotificationCenter defaultCenter] addObserver:self 
               selector:@selector(moviePlayerLoadStateDidChange:) 
               name:MPMoviePlayerLoadStateDidChangeNotification 
               object:nil]; 
    } 
} 

- (void) addPlayer 
{ 
    [[[moviePlayerViewController moviePlayer] view] setFrame:self.view.bounds]; 
    [[self view] addSubview:[[moviePlayerViewController moviePlayer] view]]; 
} 

static NSTimeInterval t; 
// Call this on applicationWillResignActive 
-(void) pauseMovieInBackGround 
{ 
    [[moviePlayerViewController moviePlayer] pause]; 
    t = [[moviePlayerViewController moviePlayer] currentPlaybackTime]; 
    [moviePlayerViewController.view removeFromSuperview]; 
} 

// Call this on applicationWillEnterForeground 
-(void) resumeMovieInFrontGround 
{ 
    [self addPlayer]; 

    [[moviePlayerViewController moviePlayer] stop]; 
    [[moviePlayerViewController moviePlayer] setInitialPlaybackTime:t]; 
    [[moviePlayerViewController moviePlayer] play]; 
} 

-(void)moviePlayerLoadStateDidChange:(NSNotification *)notification 
{ 
    if([[moviePlayerViewController moviePlayer] loadState] != MPMovieLoadStateUnknown) 
    { 

     [[NSNotificationCenter defaultCenter] removeObserver:self 
               name:MPMoviePlayerLoadStateDidChangeNotification 
               object:nil]; 

     [self addPlayer]; 
     [[moviePlayerViewController moviePlayer] play]; 
    } 
} 

-(void)videoPlayBackDidFinish:(NSNotification*)notification 
{ 
    [self dismissMoviePlayerViewControllerAnimated]; 
}

来源

2012-09-21 11:43:00 zvjerka24

我碰到这个问题来了。
我试过ChrisH的回答，但直到我将removeObserver放入viewDidLoad（）而不是init（）时，它才适用于我。

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
// Do any additional setup after loading the view. 
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationDidEnterBackgroundNotification object:nil]; 

}

然后它工作。好好享受。

来源

2013-07-10 02:08:19 Chiakie

您不需要子类MPMoviePlayerViewController - 只需在创建MPMoviePlayerViewController实例后执行以下步骤。

[[NSNotificationCenter defaultCenter] removeObserver:self.moviePlayerViewController name:UIApplicationDidEnterBackgroundNotification object:nil];

来源

2014-08-18 22:32:33 applefreak

MPMoviePlayerViewController退出后背景

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