uicollectionview remove top padding

Question

I have a UICollectionView that is the entire view but it lives inside \"view\" (it is not UICollectionViewController). Adding a cell to this collection view shows it in the

Answer 1

You can fix top padding issue by considering one of the following method.

Method 1: Natural way to fix your problem by setting up your collectionView dimensions properly from StoryBoard.

Method 2: **Updated**

You can validate collection frame in viewDidLayoutSubviews or viewWillLayoutSubviews

  override func viewDidLayoutSubviews() {
     collectionView.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height)
}

Method 3: You can Adjust Scroll View Insets from your StoryBoard Attributes Inspector.

Method 4: You can fix this issue programatically by adjusting CollectionView contentInset.

collectionView.contentInset = UIEdgeInsets(top: **Any Value**, left: 0, bottom: 0, right: 0)

Output with top padding 5:

Output with top padding 44:

Output with top padding 64:

Answer 2

I also had the same problem, and i fixed it with a way totally ridiculous solution.

My collectionView contained several sections which had no title & no item cells.

The top, bottom inset values of the section insets were 10 respectively. so each empty section charged height of 20 pixels.

I had 4 empty sections, and therefore, 80 top margins in the collection view.

Hope you check this as well if none of the above solutions works.

Answer 3

I think because this viewController is embedded in a navigationController. Let select this viewController in the storyboard and uncheck Adjust Scroll View Insets:

Answer 4

Make your Navigation Controller > NavigationBar translucent by unchecking the Translucent check box in IB > Attribute Inspector, and it will work.

Answer 5

There is one more way to resolve this issue and that is selecting collectionView -> scrollView Content Insets -> "Automatic" to "Never".

By default scrollView Content Insets value is Automatic. Please check the below image.

For more details check: UIScrollView.ContentInsetAdjustmentBehavior

https://developer.apple.com/documentation/uikit/uiscrollview/2902261-contentinsetadjustmentbehavior