iphone - Dismiss Current View controller and open new view controller - ios Swift -

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i have 3 view controllers. in second view controller. want dismiss current view controller , open third view controller. how can it? can dismiss third view controller second view controller using following code. 

self.presentingviewcontroller?.presentingviewcontroller?.dismissviewcontrolleranimated(false, completion: nil)

my problem here when use function screen flickering. means second view controller showing , dismissed. how can it?

i want dissmiss currentview cotroller , open new view controller

it possible in android. hope possible in ios too. how can achieve this. please 1 me.

edit 1:

i try dissmiss current view controller , open new view controller using following code. second , third both closed.

self.dismissviewcontrolleranimated(false) {     // go mainmenuview eyes of user     presentingviewcontroller.dismissviewcontrolleranimated(false, completion: nil) }

i found solution

i change view controller child of navigation controller. , remove history third view controller following

let tempvca = self.navigationcontroller!.viewcontrollers         tempvc: uiviewcontroller in tempvca {             if (tempvc secondvc) {                 tempvc.removefromparentviewcontroller()             }         }

i using piece of code third view controller's viewdidload func


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