UIKit - UINavigationController(导航控制器)

UINavigationController管理堆栈视图控制器和一个导航栏。它将水平视图转换为推动的导航栏和弹出视图,同时保持同步。

1.创建UINavigationController

//1.先获取首页的视图控制器
let viewController = ViewController()

//2.将首页视图控制器作为UINavigationController的根视图
let navigationController = UINavigationController(rootViewController: viewController)
        
//3.将UINavigationController控制器作为window根视图
    self.window?.rootViewController = navigationController

2.为堆栈视图添加新的视图(跳转到新页面)

//获取新视图
let detailViewContoller = DetailPageViewController()

//将新视图添加到堆栈中
    self.navigationController?.pushViewController(detailViewContoller, animated: true)

3.推出堆栈视图中最新的视图(返回上一个页面)

let secondViewContoller = SecondPageViewController()

//推出视图
    self.navigationController?.pushViewController(secondViewContoller, animated: true)

4.返回到根视图

self.navigationController?.popToRootViewController(an