MPMoviePlayerController的视图无法识别触摸

This is my code:

这是我的代码：

_mediaPlayer = [[MPMoviePlayerController alloc] init];
_mediaPlayer.controlStyle = MPMovieControlStyleNone;
_mediaPlayer.shouldAutoplay = NO;
[_mediaPlayer.view setFrame: CGRectMake(5, 5, 600,400)];
[playerHolder addSubview: _mediaPlayer.view];
//
[self prepareScreenContentToPlay];
//
UITapGestureRecognizer *singleFingerTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleRollTap:)];
singleFingerTap.numberOfTapsRequired = 1;
[_mediaPlayer.view addGestureRecognizer:singleFingerTap];
[singleFingerTap release];
_mediaPlayer = [[M