ios - Swift Changing View with performSegueWithIdentifier / programmatically -

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so trying programmatically change views when condition triggered.

i have created simplistic project, whereby want change view 2 view 1, once view 1 has loaded. in reality, there logical operation checks if variable true, invokes performseguewithidentifier function, keep simple possible have removed code.

the steps have performed are, firstly create 2 views: showing 2 views

i click view 1, , inspect properties , created manually triggered segue view 2 connecting manual segue

i selected 'show' option, views connected segue connected manual segue under attribute inspector, give storyboard segue , identifier of "gotoview2". naming segue there go viewcontroller.swift file, , in viewdidload function. insert performseguewithidentifier code:

self.performseguewithidentifier("gotoview2", sender: self)

adding performseguewithidentifier code

however, when run code. view 2 not load, , view 1 appears in simulator.

any , explanation appreciated.

i have had same problem attempting perform segue inside viewdidload function, , error comes seems view attempting load segue not in window hierarchy.

changing call viewdidappear seemed fix issue mentioned in other post: whose view not in window hierarchy (note language objective-c not swift, can translated).

it seems have careful @ point in view lifecycle want change view controller - @ viewdidload views in storyboard not available.

btw, without having conditional in there, segue fired (and load view controller) every time view loaded!


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