Swift5 导航栏的使用 2022年11月更新

Posted 2023-01-14 长沙火山

Swift 导航栏的使用

一、基本使用

1.1 创建导航栏

在AppDelegate 如下方法中添加创建导航栏的代码：

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool         
        self.window?.backgroundColor = UIColor.white
        let main = ControlMainController()
        let navigation = UINavigationController(rootViewController: main)
        self.window?.rootViewController = navigation
        return true

1.2 导航栏上添加按钮

//添加导航栏左边按钮
let item1 = UIBarButtonItem(title: "我的", style: UIBarButtonItem.Style.plain, target: self, action: #selector(buttonClick))
self.navigationItem.leftBarButtonItem = item1

//添加导航栏右边按钮
let item2 = UIBarButtonItem(title: "设置", style: UIBarButtonItem.Style.plain, target: self, action: #selector(buttonClick))
self.navigationItem.rightBarButtonItem = item2

//添加多个按钮
let item1 = UIBarButtonItem(title: "我的", style: UIBarButtonItem.Style.plain, target: self, action: #selector(buttonClick))
let item2 = UIBarButtonItem(title: "设置", style: UIBarButtonItem.Style.plain, target: self, action: #selector(buttonClick))
self.navigationItem.rightBarButtonItems = [item1, item2]

1.3 页面跳转

//跳转到下个页面
func buttonClick(button:UIButton) 
  let secondVC = SecondViewController()
  self.navigationController?.pushViewController(secondVC, animated:true)

//返回上一个页面
func back() 
  self.navigationController?.popViewControllerAnimated(true)