使用未聲明的類型'UIViewControllerContextTransit'

Question

我是Swift的新手。我在斯威夫特3.

func transitionDuration(using transitionContext: UIViewControllerContextTransit.ioning?) -> TimeInterval { 
    return 0.75 
} 

上自定義轉換我收到錯誤：

Use of undeclared type 'UIViewControllerContextTransit'

不要任何人知道解決這個？

Answer 1

您在代碼中有錯誤打印。您需要更改UIViewControllerContextTransit.ioning到UIViewControllerContextTransitioning 您的代碼看起來像

func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval { 
    return 0.75 
}