53 lines
2.6 KiB
Swift
53 lines
2.6 KiB
Swift
//
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// MPPositive_NavigationController.swift
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// MusicPlayer
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//
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// Created by Mr.Zhou on 2024/4/19.
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//
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import UIKit
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///b面导航栏
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class MPPositive_NavigationController: MP_NavigationController {
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//重写pushViewController
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//每一次push都会执行这个方法，push之前设置viewController的hidesBottomBarWhenPushed
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override func pushViewController(_ viewController: UIViewController, animated: Bool) {
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viewController.hidesBottomBarWhenPushed = true
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NotificationCenter.notificationKey.post(notificationName: .positive_nav_push)
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super.pushViewController(viewController, animated: true)
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viewController.hidesBottomBarWhenPushed = false
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}
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//重写popViewController
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//每一次对viewController进行push的时候，会把viewController放入一个栈中
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//每一次对viewController进行pop的时候，会把viewController从栈中移除
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override func popViewController(animated: Bool) -> UIViewController? {
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guard self.children.count != 1 else {
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//特殊情况，当用户连续触发pop事件时进行容错处理
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return super.popViewController(animated: true)
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}
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guard self.children.count == 2 else {
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//如果viewController栈中存在的ViewController的个数超过两个，对要返回到的上一级的界面设置hidesBottomBarWhenPushed = true
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//把tabbar进行隐藏
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let count = self.children.count-2
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let controller = self.children[count]
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controller.hidesBottomBarWhenPushed = true
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NotificationCenter.notificationKey.post(notificationName: .positive_nav_push)
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return super.popViewController(animated: true)
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}
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//如果viewController栈中存在的ViewController的个数为两个，再返回上一级界面就是根界面了
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//那么要对tabbar进行显示
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let controller:UIViewController = self.children[0]
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controller.hidesBottomBarWhenPushed = false
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NotificationCenter.notificationKey.post(notificationName: .positive_nav_pop)
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return super.popViewController(animated: true)
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}
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override func popToRootViewController(animated: Bool) -> [UIViewController]? {
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//如果viewController栈中存在的ViewController的个数为两个，再返回上一级界面就是根界面了
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//那么要对tabbar进行显示
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let controller:UIViewController = self.children[0]
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controller.hidesBottomBarWhenPushed = false
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NotificationCenter.notificationKey.post(notificationName: .positive_nav_pop)
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return super.popToRootViewController(animated: animated)
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}
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}
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