移动UIButton位置，动画 [英] Moving UIButton position, animated

问题描述

我有一个UIButton，按下它时我想移动它的位置。

I have a UIButton, which when it's pressed I want to move the position of it.

我已经通过以下代码做到了这一点：

I've managed to do this by this code:

ans2.frame = CGRectOffset(ans2.frame, 0, 20);

但是，这只是立即移动按钮。

However this just moves the button instantly.

我也尝试过通过将++移至新位置来移动它，但这看起来像是动画滞后。

I've also tried just moving it by doing ++ to the position until the new one is reached, however this makes it look like the "animation" lags.

是否可以使用平滑的动画来移动按钮？

Would it be possible to move the button with a smooth animation?

推荐答案

UIKit提供了几种执行动画的方法。在您的情况下，最简单的方法是：

UIKit provides several ways to perform animations. The simplest way in your case would be this:

[UIView animateWithDuration:1.0 animations:^{
   ans2.frame = CGRectOffset(ans2.frame, 0, 20);
}];

但是，还有很多其他动画效果。结帐 Apple的动画指南。

However, there are plenty of other possibilities to animate. Checkout Apple's Animation Guide.

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