以编程方式快速创建水平 UIScrollView

Posted 2023-03-14

【中文标题】以编程方式快速创建水平 UIScrollView

【英文标题】：Create a horizontal UIScrollView in swift programmatically

【发布时间】：2018-03-28 04:36:19

【问题描述】：

我想知道如何在不使用情节提要的情况下通过页面控制器以编程方式快速创建水平滚动视图。

【问题讨论】：

check this & this

【参考方案1】：

import UIKit

class SecondViewController: UIViewController, UIScrollViewDelegate 

    var scrollview = UIScrollView()
    var imageview = UIImageView()
    var view1 = UIView()
    override func viewDidLoad() 
        super.viewDidLoad()
        imageview.frame = CGRect(x: 0, y: 0, width: view.frame.size.width , height: 1000)
         imageview.image = UIImage(named: "image")
        scrollview.delegate = self
        scrollview.contentSize = CGSize(width: imageview.frame.width, height: imageview.frame.height)


        scrollview.backgroundColor = UIColor.red
        imageview.backgroundColor =  UIColor.green

        self.scrollview.addSubview(imageview)
        view.addSubview(scrollview)
        scrollview.translatesAutoresizingMaskIntoConstraints = false



        scrollview.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
        scrollview.widthAnchor.constraint(equalTo: view.widthAnchor).isActive = true
        scrollview.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
        scrollview.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true


        // Do any additional setup after loading the view.
    

【参考方案2】：

试试这个

import UIKit

class ViewController: UIViewController, UIScrollViewDelegate 

    var scrollView: UIScrollView!

    let textData: String = "Just to add onto the already great answers, you might want to add multiple labels in your project so doing all of this (setting size, style etc) will be a pain. To solve this, you can create a separate UILabel class."

    override func viewDidLoad() 
        super.viewDidLoad()

        let textLable = UILabel(frame: CGRect(x: 0, y: 0, width: 1000, height: 200))
        textLable.text = textData

        self.scrollView = UIScrollView()
        self.scrollView.delegate = self
        self.scrollView.contentSize = CGSize(width: textLable.frame.width, height: textLable.frame.height)

        scrollView.addSubview(textLable)
        view.addSubview(scrollView)

    

    override func viewDidLayoutSubviews() 
        super.viewDidLayoutSubviews()

        scrollView.frame = view.bounds
    

    override func didReceiveMemoryWarning() 
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.