CODEWITHSUNDEEP
iosswiftuinavigationcontroller
Blaszard
Blaszard

Reputation: 31985

How to call `setViewControllers: animated:` in Swift?

I try to alter my view controller within navigation controller when an user taps a button, so I declared the following code:

if standingsViewController == nil {
   standingsViewController = StandingsViewController()
   splitViewController!.delegate = standingsViewController
}
var vc = splitViewController!.viewControllers[1] as UINavigationController
vc.setViewControllers([standingsViewController], animated: true)

However, this causes an error: fatal error: attempt to bridge an implicitly unwrapped optional containing nil on the last line.

UINavigationController's setViewControllers: animated: method is defined in Swift properly, so how can I fix up the problem?

For your information when I try to change it to [standingsViewController]!, it didn't even pass the compiling because [AnyObject] is not identical to [AnyObject]!.

I use Xcode 6.1 beta in Swift.

Upvotes: 1

Views: 7525

Answers (1)

Wojtek Surowka
Wojtek Surowka

Reputation: 21003

Looks like you forgot to unwrap:

vc.setViewControllers([standingsViewController!], animated: true)

instead of

vc.setViewControllers([standingsViewController], animated: true)

Upvotes: 7

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