带标记的按钮 [英] Button with Tag
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.
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