AVPlayer不在iOS 8中播放视频

Question

我试图在iOS 8中播放视频，我的代码在iOS 7中运行良好，而不是在ios 8中运行

NSURL *fileURL = [NSURL fileURLWithPath:path];
self.avPlayer = [AVPlayer playerWithURL:fileURL];

AVPlayerLayer *layer = [AVPlayerLayer playerLayerWithPlayer:self.avPlayer];
self.avPlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
layer.frame = CGRectMake(0, 0, 1024, 768);
[self.view.layer addSublayer: layer];

[self.avPlayer play];