iOS-对视图中的多个Tableview或CollectionView使用/传递手势识别器（Swift）

Question

I've got 2 (circular) UICollectionviews in my view, both are functioning but I want to use 1 swipe gesture for both views so when I swipe on the top collectionview, the bottom view should also swipe with the same speed and vice-versa. What would be the best way to achieve this?

This is my UIViewController:

both collectionviews should scroll whenever I scroll anywhere on this UIViewController. Any help would be very appreciated.

Answer 1

Set scrollView delegate of your collectionView's scrollView . UICollectionView is a subclass of UIScrollView . Use scrollViewDidScroll method. In that method you can for example see contentOffset of one UICollectionView and then set contentOffset to the other collectionView's scrollView to that value.