UIView transitionWithView swift 语法

Question

可以帮助我快速使用 transitionWithView 的语法吗？ 在objective-c中，我会像这样使用它：

[UIView transitionWithView:[ self view ] duration:0.325 options:UIViewAnimationOptionCurveEaseOut animations:
 ^{
     // do the transition
 }
 completion:
 ^( BOOL finished ){
    // cleanup after the transition
 }];

但是我无法让完成处理程序工作。 谢谢

Answer 1

在Swift 5.x 中会是这样：

UIView.transition(with: self.view, duration: 0.325, options: .curveEaseInOut, animations: {

    // animation

}) { finished in

    // completion

}

Answer 2

我想添加到已接受的答案中，您可以通过传递如下数组将多个选项传递给transitionWithView ：

斯威夫特 3、4、5

UIView.transition(with: status, duration: 0.33, options:
       [.curveEaseOut, .transitionCurlDown], animations: {
           //...animations
       }, completion: {_ in
           //....transition completion
           delay(seconds: 2.0) {

           }
   })

斯威夫特 2.0

 UIView.transitionWithView(status, duration: 0.33, options:
        [.CurveEaseOut, .TransitionCurlDown], animations: {
            //...animations
        }, completion: {_ in
            //....transition completion
            delay(seconds: 2.0) {

            }
    })

斯威夫特 1.2

UIView.transitionWithView(status, duration: 0.33, options:
        .CurveEaseOut | .TransitionCurlDown, animations: {
            //...animations
        }, completion: {_ in
            //transition completion
            delay(seconds: 2.0) {

            }
    })

当然，您也可以使用完全限定的语法，如下所示：

[UIViewAnimationOptions.CurveEaseOut, UIViewAnimationOptions.TransitionCurlDown]

Answer 3

斯威夫特 3

UIView.transition(with: someview,
                                    duration:0.6,
                                    options:UIViewAnimationOptions.transitionFlipFromLeft,
               animations: {
                   // do something
           }, completion:{
               finished in
               // do something
           })

Answer 4

文档有点难找，但这应该有效：

UIView.transitionWithView(self.view, 
                 duration:0.325,
                  options: options:UIViewAnimationOptions.CurveEaseOut,
               animations: {
                             …
                           },
               completion: {
                             finished in
                             …
                           })

如果您想要completion处理程序，您可以使用尾随闭包，但在这种情况下我不会，它会太混乱/不清楚。

但是如果你不打算传递一个动画块，它会是边缘可读的：

UIView.transitionWithView(self.view, duration:0.325, options: options:UIViewAnimationOptions.CurveEaseOut, animations: nil) {
    finished in
    …
}