从Storyboard添加controllerview会取消在我视图中分配给UIImageViews的TapGesture

Question

所以在一个视图中，让我们说“A”，我有多个UIImage视图和UITextViews。现在，这都是以编程方式完成的。在同一视图中，我这样做：

if(!_productionLinesCollectionViewController)
{
    _productionLinesCollectionViewController = [[self storyboard]instantiateViewControllerWithIdentifier:@"ProductionLinesCollection"];
    _productionLinesCollectionViewController.productionLines = [_plant.productionLines allObjects];
    _productionLinesCollectionViewController.initX = 0;
    _productionLinesCollectionViewController.initY = _totalHeight;
    _productionLinesCollectionViewController.width = 668;
}

[self.scrollView addSubview:_productionLinesCollectionViewController.view];

现在由于某种原因，这是“取消”我之前分配的所有UITapGestures（在同一视图中）（此外，此代码在其他一些视图中100％工作）。每当我删除这段代码时，我的手势再次起作用。有什么想法吗？

谢谢！

UIImageView *playMovieImage = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"press_to_play.png"]];
playMovieImage.frame = CGRectMake(30, _totalHeight, 608, 456);
UITapGestureRecognizer *tapRecognizer;
tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(playMovie:)];
[playMovieImage addGestureRecognizer:tapRecognizer];
playMovieImage.userInteractionEnabled = YES;
[self.scrollView addSubview:playMovieImage];