动画子视图的大小
假设我有一个标准的 UIView 来显示我的屏幕。其中是另一个 UIView，它本身包含三个按钮：
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| ------------------- |
| | 1 | 2 | 3 | | UIView A
| | | | | | contains UIView B
| ------------------- | which contains 3 buttons.
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我希望能够通过将按钮块在中心变小，然后“爆炸”变大，将这些按钮动画显示到屏幕上。我知道我可以单独为每个按钮设置动画，但是如何仅使用 UIView B 来做到这一点。有没有一种方法可以让按钮在动画时根据 UIView B 的大小自动调整大小？
Let's say I have a standard UIView to show my screen. Within that is another UIView, which itself contains three buttons:
--------------------------
| |
| |
| |
| ------------------- |
| | 1 | 2 | 3 | | UIView A
| | | | | | contains UIView B
| ------------------- | which contains 3 buttons.
| |
| |
| |
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I'd like to be able to animate these buttons onto the screen, by starting the button block small in the center, and then 'exploding' bigger. I know I could animate each button individually, but how could I do it just using UIView B. Is there a way that the buttons could automatically resize according to the size of UIView B when animating?
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您可以尝试在这三个按钮上设置
autoresizingMask属性，使其具有灵活的边距、高度和宽度，以便当您更改 UIView B 的大小时，它们会随着 UIView B 一起“增长”You can try to set the
autoresizingMaskattribute on the three buttons, to have flexible margins, height and width, so that they "grow" with UIView B as you change the size of UIView B