FSPagerView inside UITableView : need to set pagerView currentIndex before it gets displayed

[lucasgerard]

Hi,

I'm currently using FSPagerView inside a UITableView, just as it was a CollectionView from this article

However, I can't find a way to set the contentOffset of the pagerView as I would for a collectionView (collectionView.contentOffset.x = newValue), to ensure that when my tableView cells are reused, the offset are preserved and my pagerView is displayed with the right currentIndex.

Basically, I would like to set the pagerView current displayed index in my tableView WillDisplayCell method, but as I try using scrollToItem it crashes with an index out of range issue showing that numberOfItems is still 0, as its data was not loaded yet.

Any idea how to accomplish that? Hope I'm clear enough, thanks for your help!

[WenchaoD]

The content offset is useless if your collectionView hasn't layout it's content. Typically you should set the content offset in viewDidLayoutSubviews function of your view controller, or force the collection view layout before scrolling by calling layoutIfNeeded(). In this case, the following code could be helpful.

pagerView.layoutIfNeeded()
pagerView.scrollToItem(at: index, animated: false)

[lucasgerard]

Thanks for the help, it worked!

[WenchaoD]

You are welcome.