如何将阴影添加到导航栏，而不是默认边框 [英] How to add shadow to Navigation Bar instead of default border

问题描述

我想用阴影替换UINavigationBar中的默认边框.有什么办法可以做到这一点?我尝试使用与向UIView添加阴影相同的方法，但是它增加了NavigationBar的高度.

I want to replace a default border in UINavigationBar with shadow. Is there any way to achieve this? I have tried using the same approach as with adding shadow to UIView but it increases a height of my NavigationBar.

推荐答案

尝试一下

self.navigationController.navigationBar.layer.shadowColor = UIColor.blackColor().CGColor
self.navigationController.navigationBar.layer.shadowOffset = CGSizeMake(2.0, 2.0)
self.navigationController.navigationBar.layer.shadowRadius = 4.0
self.navigationController.navigationBar.layer.shadowOpacity = 1.0

快捷键3

 override func viewDidLoad() {
    super.viewDidLoad()

    self.navigationController?.navigationBar.layer.shadowColor = UIColor.black.cgColor
    self.navigationController?.navigationBar.layer.shadowOffset = CGSize(width: 0.0, height: 2.0)
    self.navigationController?.navigationBar.layer.shadowRadius = 4.0
    self.navigationController?.navigationBar.layer.shadowOpacity = 1.0
    self.navigationController?.navigationBar.layer.masksToBounds = false
 }

输出为

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