快速，嵌入带有导航 Controller 的 ui View Controller 以允许后退按钮

Question

我正在尝试在 MyServiceTypeSelector() Controller 上获取后退按钮，以便在呈现 MyServiceTypeSelector() 后我可以返回到 BRPServiceSelector() Controller ，我该如何执行此操作？我是否需要将其嵌入导航 Controller ，如果是这样，我不使用 Storyboard，因此需要以编程方式完成？

 import Foundation
 import UIKit

class BRPServiceSelector: UIViewController, UITextFieldDelegate {


override func viewDidLoad() {
    super.viewDidLoad()

    setupViews()



}



let businessAccountLabel: UILabel = {
    let label = UILabel()
    label.text = "Business Account"
    label.backgroundColor = .white
    label.translatesAutoresizingMaskIntoConstraints = false
    label.textAlignment = .center
    return label
}()







lazy var serviceSelectorButton: UIButton = {
    let button = UIButton(type: .system)
    button.backgroundColor = UIColor.black
    button.setTitle("Select A Service Type?", for: .normal)
    button.setTitleColor(UIColor.white, for: .normal)
    button.addTarget(self, action: #selector(presentServiceSelector), for: .touchUpInside)
    button.layer.cornerRadius = 3
    button.titleLabel?.font = UIFont.boldSystemFont(ofSize: 14)

    return button
}()


func presentServiceSelector(){

    let msts = MyServiceTypeSelector()
    let navController = UINavigationController(rootViewController: msts)
    self.present(navController, animated: true, completion: nil)







let containerView: UIView = {
    let v = UIView()
    v.translatesAutoresizingMaskIntoConstraints = false
    v.backgroundColor = .white
    return v
}()





let scrollView: UIScrollView = {
    let v = UIScrollView()
    v.translatesAutoresizingMaskIntoConstraints = false
    v.backgroundColor = .white
    return v
}()


func setupViews(){

    containerView.addSubview(serviceSelectorButton)

    serviceSelectorButton.anchor(top: containerView.topAnchor, left: nil, bottom: nil, right: nil, paddingTop: 50, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: 220, height: 25)

    serviceSelectorButton.centerXAnchor.constraint(equalTo: containerView.centerXAnchor).isActive = true
    }
}

}

Answer 1

如果您希望 VC 位于导航堆栈中，请将其插入堆栈而不是呈现它。呈现通常用于模式窗口，它们通常没有导航栏。

self.navigationController?.pushViewController(vc, animated: true)