ios - 我如何使用多个文件在 viewController 中访问它们？

Question

我正在尝试以编程方式创建一个 Stackview，其中包含一个显示“Hello world”的 TextField

class stackview: UIViewController {

    func setupview() {

        // Define TextField
        let Textfield = UITextView()
        Textfield.allowsEditingTextAttributes = false
        Textfield.translatesAutoresizingMaskIntoConstraints = false
        Textfield.widthAnchor.constraint(equalToConstant: 70).isActive = true
        Textfield.heightAnchor.constraint(equalToConstant: 70).isActive = true
        Textfield.isEditable = false

        // Define the stackview, and setting up the attributes
        let stackview = UIStackView()
        stackview.axis = UILayoutConstraintAxis.horizontal
        stackview.distribution = UIStackViewDistribution.equalCentering
        stackview.alignment = UIStackViewAlignment.center
        stackview.spacing = 5
        stackview.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(stackview)
        stackview.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
        stackview.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true

        Textfield.text = "hello"

        view.addSubview(Textfield)

    }

在我的 Viewcontroller.swift 中，我想在 ViewDidLoad 中访问这个函数

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        var level = stackview()
        level.setupview()
    }

但是 Hello world 似乎没有出现!

Answer 1

做这样的事情。

stackview.swift

import UIKit

class stackview: UIViewController {

    func setupview(myView: UIView) {

        // Define TextField
        let Textfield = UITextView()
        Textfield.allowsEditingTextAttributes = false
        Textfield.translatesAutoresizingMaskIntoConstraints = false
        Textfield.widthAnchor.constraint(equalToConstant: 70).isActive = true
        Textfield.heightAnchor.constraint(equalToConstant: 70).isActive = true
        Textfield.isEditable = false

        // Define the stackview, and setting up the attributes
        let stackview = UIStackView()
        stackview.axis = UILayoutConstraintAxis.horizontal
        stackview.distribution = UIStackViewDistribution.equalCentering
        stackview.alignment = UIStackViewAlignment.center
        stackview.spacing = 5
        stackview.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(stackview)
        stackview.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
        stackview.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true

        Textfield.text = "hello"

        myView.addSubview(Textfield)
    }

ViewController.swift

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        let level = stackview()
        level.setupview(myView: self.view)
    }
}