制作动画以展开和缩小UIView [英] Making an animation to expand and shrink an UIView

问题描述

我想创建一个动画，将通过一个因素调整UIView及其内容的大小。基本上，我想制作一个动画，首先展开视图，然后收缩回原来的大小。

I want to create an animation that will resize an UIView and its contents by a factor. Basically, I want to make an animation that first expands the view then shrinks it back to the original size.

这是最好的方法是什么？我试过CALayer.contentScale，但它根本没有做任何事情。

What is the best way to do this? I tried CALayer.contentScale but it didn't do anything at all.

推荐答案

Objective-C：

Objective-C:

[UIView animateWithDuration:1
                 animations:^{
                     yourView.transform = CGAffineTransformMakeScale(1.5, 1.5);
                 }
                 completion:^(BOOL finished) {
                     [UIView animateWithDuration:1
                                      animations:^{
                                          yourView.transform = CGAffineTransformIdentity;

                                      }];
                 }];

Swift：

UIView.animateWithDuration(1, animations: { () -> Void in
    yourView.transform = CGAffineTransformMakeScale(1.5, 1.5)
    }) { (finished: Bool) -> Void in
        UIView.animateWithDuration(1, animations: { () -> Void in
            yourView.transform = CGAffineTransformIdentity
        })}

并用您自己的缩放值和持续时间替换缩放值和持续时间。

and replacing the scale values and durations with your own.

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