Not working in UICollectionView

[jmteixeira]

Hi, I have a UITabBarController with a Navigation Controller, inside each of the tabs, I have a UICollectionView, but it's not working the way it should.
The tab doesn't appear at the right position, and after scroll a little, the navigation disappears and shows the tab behind.

I'm doing this:

self.scrollCoordinator = [[JDFPeekabooCoordinator alloc] init];
self.scrollCoordinator.scrollView = self.collectionView;
self.scrollCoordinator.topView = self.navigationController.navigationBar;
self.scrollCoordinator.bottomView = self.tabBarController.tabBar;

Is anything wrong?

I left here some screenshots to show the problem.

Thanks,
José Teixeira

[JoeFryer]

Hi @jmteixeira - thanks for reporting, I'll take a look.

[JoeFryer]

Hi @jmteixeira - I've just had a look at this, and while I can't reproduce what you're seeing, I am seeing some slightly weird stuff with UITabBarController. You might want to try setting JDFPeekaboo's containingView property to your UITabBarController's view, and calling fullyExpandViews in viewDidAppear: of your view controller.

I haven't fully investigated yet to see what the cause of the issue is, but this seems to remedy it for me for now.

Let me know if this helps.

[jmteixeira]

Thank you, that fixed the problem. However, I have one more, I'm using a custom refresh control and everytime I refresh the view, the top scroll inset of the collection view increases.
I already tried to set collection view's content inset manually on refresh, but it didn't work.

[JoeFryer]

Hmm I'm not sure what that would be, I can't reproduce it myself. Could you upload a sample app showing this behaviour?

[thomasgpeng]

This may or may not help, but I was having issues with refreshing as well, and the issue was that I was calling enableFullyExpandingViews while reloading my collection view. This can easily happen if you call both enableFullyExpandingViews and [collectionView reload] in viewWillAppear, for example. I solved it by putting enableFullyExpandingViews after [collectionView reload] in a completion block. Hope that helps.