带标签的按钮 [英] Button with Tag
本文介绍了带标签的按钮的处理方法，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 喜欢然后将其转换为 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 即可更改其 alpha.但如果确实需要，您可以添加 (UIButton*) 演员表.
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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