ios - Switch tab bar view in subview programmatically (custom tab bar controller) -

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because want redesign tab bar ui, wrote custom tab bar controller according https://github.com/codepath/ios_guides/wiki/creating-a-custom-tab-bar

in tabbarviewcontroller's viewdidload(), define several subviews corresponding each tab bar

homeviewcontroller = storyboard.instantiateviewcontrollerwithidentifier("homeviewcontroller") ... viewcontrollers = [homeviewcontroller, searchviewcontroller, accountviewcontroller, trendingviewcontroller]

and main method when tapping tab

@ibaction func didpresstab(_ sender: uibutton) {          let previousindex = selectedindex         selectedindex = sender.tag          tabbuttons[previousindex!].isselected = false         let previousvc = viewcontrollers[previousindex!]          // remove previous vc         previousvc.willmove(toparentviewcontroller: nil)         previousvc.view.removefromsuperview()         previousvc.removefromparentviewcontroller()          // set current vc         sender.isselected = true         let vc = viewcontrollers[selectedindex]          addchildviewcontroller(vc)          // adjust size match content view         vc.view.frame = contentview.bounds         contentview.addsubview(vc.view)         vc.didmove(toparentviewcontroller: self)     }

i set default tab bar index selectedindex when tab bar view loaded. however, how can switch next tab bar in homeviewcontroller (without tapping tab bar buttons)?

this doesn't work in homeviewcontroller tabbarviewcontroller().tabbuttons[2].isselected = true tabbarviewcontroller().didpresstab(tabbarviewcontroller().tabbuttons[2])

i'm not sure how running tab controller, set selectedindex, , update subview in subview controllers.

all need call tabbar.setselectedviewcontroller: , pass view controller.

if know tab index, call tabbar.viewcontrollers[index] , view controller.


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