swift - How to display a UINavigationController over another UINavigationController in a UITabBarController? -

i have uitabbarcontroller contains few tabs. 1 of tabs has uinavigationcontroller uitableviewcontroller root view controller.

on tab trying display view on top of uinavigationcontroller in modal fashion. still want retain uitabbar view @ bottom once displayed modally.

is possible? maybe displaying modally wrong thing - have feeling need present view popover, i'm having trouble with:

1. displaying popover
2. dismissing popover

has got ideas on how can achieved?

note: thing want display modally/as popover uinavigationcontroller uitableview root view.

it seems not want modal view, because possible navigate away without dismissing (by tapping tab bar item).

the user interface idiom suitable pushing view controller. not have option of wrapping navigation controller, (or treated modal), can modify navigation bar suit needs.

for example, hide button use

self.navigationitem.hidesbackbutton = true