ios - UISearchController searchBar frame only resizes on first click -

i have implemented uisearchcontroller in regular uiviewcontroller, , have kind of weird issue.

i have uiview adapted size want uisearchbar take. on first launch of view, add uisearchbar subview uiview. when launch it, uisearchbar doesn't take size of parent uiview -- takes width of whole screen.

as can see, overlaps button on right.

but once click on search bar , cancel it, resizes exact size want.

what issue here? i've tried adding autolayout constraints searchbar parent view doesn't seem change anything. doesn't [uiview addsubview:] handle this?

uisearchcontroller's view behaviour weird indeed, there simple workaround.

• use additional container view
• put uisearchcontroller's view inside
• set uisearchcontroller's view autoresizing mask uiviewautoresizingflexiblewidth | uiviewautoresizingflexibleheight
• set uisearchcontroller's frame container's view bounds

at point uisearchcontroller.view won't resize beyond container.bounds.