带标记的按钮 [英] Button with Tag

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本文介绍了带标记的按钮的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

如何获得带有指定标签的按钮

How do I get a button with the a specifyed tag

id然后将其转换为UIButton,并更改alpha

id like to then cast it to a UIButton, and change the alpha

推荐答案

 UIView* view = [theViewContainingThatButton viewWithTag:tag];
 view.alpha = 0.5;

您无需将视图转换为UIButton来更改其alpha。但是如果真的需要,你可以添加一个(UIButton *)

You don't need to cast the view to a UIButton to change its alpha. But you can add a (UIButton*) cast if really needed.

这篇关于带标记的按钮的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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