Ios 如何修复MPMoviePlayerViewController

我点击按钮这里是代码

//NSURL *url = [NSURL URLWithString:@"http://www.ebookfrenzy.com/ios_book/movie/movie.mov"];
_moviePlayer =  [[MPMoviePlayerController alloc]
                 initWithContentURL:self.urlFile];

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(moviePlayBackDidFinish:)
                                             name:MPMoviePlayerPlaybackDidFinishNotification
                                           object:_moviePlayer];

_moviePlayer.controlStyle = MPMovieControlStyleDefault;
_moviePlayer.shouldAutoplay = YES;
[self.view addSubview:_moviePlayer.view];
_moviePlayer.view.frame = CGRectMake(0, 0, 320, 300);
[_moviePlayer setFullscreen:YES animated:YES];

它会播放，但当我按下“完成”按钮时，方法如下

- (void) moviePlayBackDidFinish:(NSNotification*)notification {
    MPMoviePlayerController *player = [notification object];
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:MPMoviePlayerPlaybackDidFinishNotification
                                                  object:player];


    [player stop];
    player.initialPlaybackTime = -1;
    [player.view removeFromSuperview];


}

看起来像这样

抱歉，没有足够的资源发布图像

它的底部有黑色的衬里，播放按钮也消失了，我如何将它加载回单元格被按下并到达detailViewController时的位置