ios - Add filter button to UISearchController -

i want add "filter" or "sort" button next searchbar inside uisearchcontroller. have tried add uibutton , searchbar uiview , set uitableview tableview.tableheaderview not work because tableview.tableheaderview get's set uisearchbar when dismissing controller. here example of how want look:

instead of customising uisearchbar , complicating things, can keep simple adding own button beside searchbar.

set no shows cancel button option searchbar using

self.searchbar.showscancelbutton = true 

or

uncheck shows cancel button option searchbar in storyboard

add own button beside searchbar shown below

and accordingly add ibaction button , perform actions in it.

also in ideal case, not recommendable put view in header of tableview. better if above tableview followed apple.