向UIButton添加背景阴影

本文介绍了向UIButton添加背景阴影的处理方法，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

如何在 UIButton 中添加浅灰色阴影，我不想要一个方法来做到这一点，它应该是：

How can add a light gray shadow to a UIButton, I don't want a method to do this at the moment, it should be something like:

UIButton *button1... button1.layer.shadowOpacity = 0.8

等等，但这不工作，它只是在按钮内添加一个阴影，但我需要它在外面。谢谢！

etc, but that doesn't work, it only adds a shadow inside the button, but I need it on the outside. Thanks!

推荐答案

首先你必须 #import< QuartzCore / QuartzCore.h> 。然后：

mybtn.layer.shadowColor = [UIColor blackColor].CGColor; mybtn.layer.shadowOpacity = 0.5; mybtn.layer.shadowRadius = 2; mybtn.layer.shadowOffset = CGSizeMake(3.0f,3.0f);