How does Apple implement scrolling up a UIScrollView until the navigation bar with large title and UISearchBar appear?

Asked Apr 16 '18 at 04:16

Active Apr 16 '18 at 04:16

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I am trying to replicate the behavior of scrollsToTop property on UITableView and UICollectionView -

If you tap the status bar the scroll view scrolls up to the top and shows the full height of the navigation bar with the large title and also slowly scrolls to show the UISearchBar embedded into the navigation item.

Sample project here

The scroll view scrolls up to the top fine but I cannot get it to show the the search bar if its navigationItem.hidesSearchBarWhenScrolling is set to true

asked Apr 16 '18 at 04:16

Ahmed Khedr

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To clarify, you are trying to emulate the behavior of the Settings and Mail apps in iOS 11? Not all apps do this. – BallpointBen Apr 16 '18 at 04:25
Does the code in the question here give you a starting point: https://stackoverflow.com/q/46007260/5496433 – BallpointBen Apr 16 '18 at 04:28
If `scrollsToTop` is left to `true` on any scroll view, and a user taps on the status bar, behavior is the same on any app like Settings and Mail... – Ahmed Khedr Apr 16 '18 at 04:28
not really @BallpointBen – Ahmed Khedr Apr 16 '18 at 04:30

How does Apple implement scrolling up a UIScrollView until the navigation bar with large title and UISearchBar appear?

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