使UICollectionView可缩放？ [英] Make UICollectionView zoomable?

问题描述

是否有任何方法使 UICollectionView zoomable ，即当你捏时，所有单元格都可以放大


我可以在 UIScrollView 中通过返回<的唯一子视图来实现code> UIScrollView 来自委托方法

Is there any method make the UICollectionView zoomable, i.e. when you pinch, all the cells can be zoomed in and out.
I can implement this in UIScrollView by returning the only subview of the UIScrollView from delegate method

- (UIView*)viewForZoomingInScrollView:(UIScrollView *)scrollView

自 UICollectionView 是一种 UIScrollView ，有没有办法或解决这个问题？ UICollectionView 是否有一个包含所有单元格的直接子视图？

谢谢

Since UICollectionView is kind of UIScrollView, is there a way or work around to implement this? Does the UICollectionView has one direct subview that contains all cells?
Thanks

推荐答案

我认为您所要求的内容看起来像在 WWDC1012 视频 高级馆藏视图和构建自定义布局 （演示于20:20开始）。

I think what you're asking for looks like what is done in the WWDC1012 video entitled Advanced Collection Views and Building Custom Layouts (demo starts at 20:20).

您基本上必须将 pinchGesture 添加到 UICollectionView ，然后传递捏合属性（缩放，居中）到 UICollectionViewLayout （这是子类 UICollectionViewFlowLayout ），您的布局将执行 zoom c>所需的转换 code>在所需的单元格上。

You basically have to add pinchGesture to you UICollectionView, then pass the pinch properties (scale, center) to the UICollectionViewLayout (which is a subclass of UICollectionViewFlowLayout), your layout will then perform the transformations needed to zoom on the desired cell.

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