ios - UIView.animate - Swift 3 - 完成

Question

我如何在 Swift 3 中做一个简单的完成 block ？

我想在动画完成时设置self.isOpen = true:

            UIView.animate(withDuration: 0.25, delay: 0.0, options: [], animations: {
                self.isOpen = true
                self.drawerView?.frame = CGRect(x: 0, y: 0, width: (self.drawerView?.frame.size.width)!, height: (self.drawerView?.frame.size.height)!)
                self.contentView?.frame = CGRect(x: 200, y: 0, width: (self.contentView?.frame.size.width)!, height: (self.contentView?.frame.size.height)!)
            }, completion: nil)

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顺带一提:

由于互联网上什么都没有，所以学习 Swift 3 atm 几乎是不可能的:(

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我还搜索了整个文档，甚至没有提到“动画”一词，但找不到任何内容:

https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/index.html#//apple_ref/doc/uid/TP40014097-CH3-ID0

Answer 1

你这样添加:

UIView.animate(withDuration: 0.25, delay: 0.0, options: [], animations: {
    self.drawerView?.frame = CGRect(x: 0, y: 0, width: (self.drawerView?.frame.size.width)!, height: (self.drawerView?.frame.size.height)!)
    self.contentView?.frame = CGRect(x: 200, y: 0, width: (self.contentView?.frame.size.width)!, height: (self.contentView?.frame.size.height)!)
}, completion: { (finished: Bool) in
    self.isOpen = true
})