navigationBar - 基本操作

1.修改基本配置

1.0 设置导航栏背景颜色

self.navigationController?.navigationBar.barTintColor = UIColor.black

1.1 修改导航栏文字颜色

//修改导航栏文字颜色
self.navigationController?.navigationBar.titleTextAttributes =[NSForegroundColorAttributeName: UIColor.white]

1.2 修改导航栏文字字体和大小

//修改导航栏文字字体和大小
self.navigationController?.navigationBar.titleTextAttributes =[NSFontAttributeName: UIFont.italicSystemFont(ofSize: 28)]

1.3 修改导航栏按钮颜色

//修改导航栏按钮颜色
self.navigationController?.navigationBar.tintColor = UIColor.white

1.4 修改导航栏背景图片

self.navigationController?.navigationBar
.setBackgroundImage(UIImage(named: "bg5"), for: .default)

备注：

1.4.1 如果背景图片不需要延伸到状态栏后面，那么背景图片高度是44点（88像素）。

1.4.2 如果需要把导航栏也包含在背景图片下，那么背景图片高度改为64点（128像素）。

2.设置导航栏titleView

2.0 设置导航栏title

self.navigationItem.title = "title"
self.navigationController?.navigationBar.titleTextAttributes = [NSAttributedString.Key.font : UIFont.systemFont(ofSize: 16), NSAttributedString.Key.foregroundColor : UIColor.black]

2.1 自定义 - Label

let titleLab = UILabel(frame: CGRect(x: 0, y: 0, width: 40, height: 40))
titleLab.text = "自定义"
titleLab.textColor = UIColor.orange
self.navigationItem.titleView = titleLab

2.2 自定义 - Image

let imageView = UIImageView(image: UIImage(named : "contentview_imagebg_logo"))
self.navigationItem.titleView = imageView

3.设置导航栏左右按钮

3.0 文字类型

let leftBtn = UIBarButtonItem(title: "leftBtn", style: .plain, target: self, action: #selector(self.leftClick))
let rightBtn = UIBarButtonItem(title: "rightBtn", style: .plain, target: self, action: #selector(self.righClick))
leftBtn.tintColor = UIColor.black
self.navigationItem.leftBarButtonItem = leftBtn
self.navigationItem.rightBarButtonItem = rightBtn

3.1 图片类型

self.navigationItem.leftBarButtonItem = UIBarButtonItem(image: UIImage(named: "fog"), style: .plain, target: self, action: #selector(self.leftClick))
self.navigationItem.rightBarButtonItem = UIBarButtonItem(image: UIImage(named: "fog"), style: .plain, target: self, action: #selector(self.rightClick))

3.2 自定义Button

let leftButton = UIButton(frame: CGRect(x: 0, y: 0, width: 40, height: 40))
let rightButton = UIButton(frame: CGRect(x: 0, y: 0, width: 40, height: 40))
leftButton.setTitleColor(UIColor.black, for: UIControlState.normal)
rightButton.setTitleColor(UIColor.black, for: UIControlState.normal)
leftButton.setTitle("leftButton", for: UIControlState.normal)
rightButton.setTitle("rightButton", for: UIControlState.normal)
leftButton.addTarget(self, action: #selector(leftClick), for: UIControlEvents.touchUpInside)
rightButton.addTarget(self, action: #selector(rightClick), for: UIControlEvents.touchUpInside)
navigationItem.leftBarButtonItem = UIBarButtonItem(customView: leftButton)
navigationItem.rightBarButtonItem = UIBarButtonItem(customView: rightButton)

事件响应：

 @objc private func leftClick() {
      print("leftClick")
      self.navigationController?.popViewController(animated: true)
  }

  @objc private func righClick() {
      print("rightClick")
  }

二 、NavigationBar第三方依赖库

1.导航栏滑动隐藏

HidingNavigationBar：https://github.com/tristanhimmelman/HidingNavigationBar

AMScrollingNavbar:https://github.com/andreamazz/AMScrollingNavba

2.导航栏样式工具

WRNavigationBar：https://github.com/wangrui460/WRNavigationBar_swift\