swift - Adding custom buttons to UITabBarController (adding button in the center) -

i'm trying make custom tab bar images made , i'm having trouble. i'm trying add button tab bar , seems can't it. want this:

then adding animations button. how can go adding button? need subclass uitabbarcontroller? thank you!

you should implement delegate method of uitabbarcontrollerdelegate:

func tabbarcontroller(_ tabbarcontroller: uitabbarcontroller, shouldselect viewcontroller: uiviewcontroller) -> bool {       if viewcontroller == (self.tabbarcontroller?.viewcontrollers?[theindexofthebutton])! {        // stuffs here         return false      }     return true } 

don't forget set self.tabbarcontroller?.delegate = self