ios - UICollectionView steals focus -

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i have uicollectionview header, cells , footer supplementary views. header contains uisearchbar. if type search field, keyboard automatically dismisses after first letter. think caused -searchbar:textdidchange:, contains code refreshing collection view (via -reloaddata, because method know works).

my theory is, reloading uicollectionview causes become first responder, somehow not work.

i have line in output every time keyboard dismisses:

setting first responder view of collection view don't know type (cell/header/footer)

i attempted overwrite uicollectionview's -canbecomefirstresponder, unfortunately didn't work.

any ideas how can prevent uicollectionview become first responder after reload?

i've had luck restoring search bar first responder after updating table view:

collectionview.reloaddata() searchbar.becomefirstresponder()

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