MPMoviePlayerViewController在ios 10.2中不工作

当我在ios 10.2上使用以下代码时

 MPMoviePlayerViewController *c = [[MPMoviePlayerViewController alloc] initWithContentURL:url];
      [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(movieLoadStateDidChange:) name:MPMoviePlayerLoadStateDidChangeNotification object:nil];
   [self.navigationController presentMoviePlayerViewControllerAnimated:c];
    [c.moviePlayer play];

但当我执行这段代码时，它会自动停止

**mpmovieplayervewcontroller*c=[[mpmovieplayervewcontroller alloc]initWithContentURL:url]

请帮忙。

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info.plist中是否有任何更改？

我还使用了belwo代码AVAsset asset=[AVAsset assetwithur:url]；AVPlayerItem*item=[[AVPlayerItem alloc]initWithAsset:asset]；AVPlayer=[[AVPlayer alloc]initWithPlayerItem:item]；player.volume=5.0；AVPlayerLayer*层=[AVPlayerLayer playerLayerWithPlayer:player]；layer.frame=self.view.layer.bounds；UIView*view=[[UIView alloc]initWithFrame:self.view.frame]//view.backgroundColor=[UIColor blackColor]；[view.layer addSublayer:layer]；[self.view addSubview:view]；[玩家游戏]；但这不是在播放视频