Swift_UI：（四）、导航控制器、TabbarController、页面调转
AppDelegate.swift文件中：
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
let mainVC = ViewController()
let mainNavigationC = UINavigationController(rootViewController: mainVC)
mainNavigationC.tabBarItem.title = "首页"
mainNavigationC.tabBarItem.image = UIImage(named:"首页")
let secondVC = SecondViewController()
let seNavigationC = UINavigationController(rootViewController: secondVC)
seNavigationC.tabBarItem.title = "发现"
seNavigationC.tabBarItem.image = UIImage(named:"发现")
let tabC = UITabBarController()
tabC.viewControllers = [seNavigationC,mainNavigationC]
self.window?.rootViewController = tabC
return true
}
ViewController.swift文件中：
import UIKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = UIColor.white
self.title = "导航栏"
// 设置导航栏颜色
self.navigationController?.navigationBar.barTintColor = UIColor.green
// 添加左按钮
let barBttonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.add, target:self, action: #selector(click))
// 导航栏右按钮
let rightBarBttonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.camera, target:self, action: #selector(rightClick))
self.navigationItem.leftBarButtonItem = barBttonItem
self.navigationItem.rightBarButtonItem = rightBarBttonItem
// Do any additional setup after loading the view, typically from a nib.
}
func click() {
print("点击导航栏左侧按钮")
}
func rightClick() {
print("点击导航栏右侧按钮")
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
self.navigationController?.pushViewController(MainViewController(), animated: true)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
MainViewController.swift文件中：
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = UIColor.yellow
// Do any additional setup after loading the view.
}
SecondViewController.swift文件中：
import UIKit
class SecondViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = UIColor.white
// Do any additional setup after loading the view.
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
self.navigationController?.pushViewController(ThridViewController(), animated: true)
//作业：仿照淘宝框架，要求设置导航栏和tabbar样式一致，使用siwift语言
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}
ThridViewController.swift文件中：
import UIKit
class ThridViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = UIColor.gray
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}