在Swift中'CGAffineTransformIdentity'不可用 [英] 'CGAffineTransformIdentity' is unavailable in Swift

问题描述

在尝试使某些动画适应Swift3语法时，出现此错误.

Came across this error when trying to do adapt some animations into Swift3 syntax.

 UIView.animate(withDuration: duration, delay: 0.0, usingSpringWithDamping: 0.5, 
 initialSpringVelocity: 0.8, options: [] , animations: {
        fromView.transform = offScreenLeft

        toView.transform = CGAffineTransformIdentity

        }, completion: { finished in
            transitionContext.completeTransition(true)              
    })

得到了:

'CGAffineTransformIdentity'在Swift中不可用

'CGAffineTransformIdentity' is unavailable in Swift

推荐答案

找到了这个链接表示全局常量已移入静态属性，而您发现的Swift 3迁移器未能对此进行更正."，您可以将代码简单地更改为:

Found this link which suggested that "The global constant was moved into a static property, and the Swift 3 migrator, as you've discovered, failed to correct for that. " and that you can simply change the code to :

 toView.transform = CGAffineTransform.identity

编辑

或更简单:

toView.transform = .identity

希望这对某人有帮助.

这篇关于在Swift中'CGAffineTransformIdentity'不可用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！