68 lines
2.0 KiB
Swift
68 lines
2.0 KiB
Swift
//
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// WA_RootNAV.swift
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// wallpaper_project
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import UIKit
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class WA_RootNAV: UINavigationController {
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override func viewDidLoad() {
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super.viewDidLoad()
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setBackItmer()
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}
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func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
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if self.viewControllers.count <= 1 {
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let viewController = UIViewController()
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viewController.hidesBottomBarWhenPushed = true
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tabBarController?.tabBar.isHidden = true
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return false
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}
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setBackItmer()
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return true
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}
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override func pushViewController(_ viewController: UIViewController, animated: Bool) {
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if viewControllers.count > 0 {
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// setBackItmer()/
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viewController.hidesBottomBarWhenPushed = true
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tabBarController?.tabBar.isHidden = true
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}
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setBackItmer()
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super.pushViewController(viewController, animated: animated)
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}
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func setBackItmer(){
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// 返回按钮
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let backButton = UIButton(type: .custom)
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// 给按钮设置返回箭头图片
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backButton.setBackgroundImage(#imageLiteral(resourceName: "ic_arrow_left"), for: .normal)
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// 设置frame
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// backButton.frame = CGRect(x: 200, y: 13, width: 18, height: 18)
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backButton.addTarget(self, action: #selector(back), for: .touchUpInside)
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// // 自定义导航栏的UIBarButtonItem类型的按钮
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let backView = UIBarButtonItem(customView: backButton)
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//
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// // 重要方法，用来调整自定义返回view距离左边的距离
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let barButtonItem = UIBarButtonItem(barButtonSystemItem: .fixedSpace, target: nil, action: nil)
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barButtonItem.width = -5
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// 返回按钮设置成功
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navigationItem.leftBarButtonItems = [barButtonItem, backView]
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}
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//
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@objc func back(){
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navigationController?.popViewController(animated: true)
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}
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}
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