uiscrollview - Pinch to zoom for entire UICollectionView -


i want entire uicollectionview zoomable including items in it.

i tried delegate method func viewforzooming(in scrollview: uiscrollview) -> uiview? uicollectionview falls under uiscrollview hierarchy. unfortunately, method doesn't triggered collectionview.

then tried putting collection view inside uiscrollview ---> contentview(uiview).

func viewforzooming(in scrollview: uiscrollview) -> uiview? {    return self.contentview //the content view holds collection }

note: uicollectionview subview of uiscrollview's contentview. uiscrollview's maximumzoomscale set 3.0. zooming isn't working excepted. after zooming content, collection view contents not scrollable in zoomed state.

any appreciated.


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