ios 9以上系统播放视频

AVPlayerItem *avPlayerItem;

AVPlayer                    *avPlayer;

AVPlayerLayer              *avPlayerLayer;

NSString *file = [[NSBundle mainBundle] pathForResource:fileName ofType:@"mp4"];

 if (file == nil)

{

  [self moviePlayFinish];

 return;

}

    NSURL *url = [NSURL fileURLWithPath:file];

    avPlayerItem = [AVPlayerItem playerItemWithURL:url];

    avPlayer = [AVPlayer playerWithPlayerItem:avPlayerItem];

    avPlayerLayer = [AVPlayerLayer playerLayerWithPlayer:avPlayer];

    avPlayerLayer.frame = CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);

    avPlayerLayer.videoGravity = AVLayerVideoGravityResizeAspect;

    avPlayerLayer.repeatCount = 1;

    [window.layer addSublayer:avPlayerLayer];

    [avPlayerItem seekToTime:kCMTimeZero];

    [avPlayer play];

    //调用

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayFinish) name:AVPlayerItemDidPlayToEndTimeNotification object:avPlayerItem];