UIScrollView 没有滚动？

Posted 2023-03-14

【中文标题】UIScrollView 没有滚动？

【英文标题】：UIScrollView didn't scrolling?

【发布时间】：2017-05-23 07:15:54

【问题描述】：

我正在从代码中创建一个UIScrollView。唯一的问题是滚动无法正常浏览很多帖子，但没有找到任何内容。 这是我的代码任何帮助都非常感谢。

class ShopDetailviewController : UIViewController 


var MainScrollView : UIScrollView?

let viewForScrollview : UIView = 

    let view = UIView()
    view.backgroundColor = UIColor.darkGray
    return view
()

let shopNameandAddresView : UIView = 

   let view = UIView()
   view.backgroundColor = UIColor.black
   return view
()

let timePaymentDetail : UIView = 

    let view = UIView()
    view.backgroundColor = UIColor.blue
    return view
()


let shopImage : UIImageView = 

    let shopeImage = UIImageView()
    shopeImage.backgroundColor = UIColor.green
    return shopeImage

()

let ratingStarLable : UILabel = 

    let ratingStratLable = UILabel()
    ratingStratLable.backgroundColor = UIColor.red
    ratingStratLable.text = "3.5"
    return ratingStratLable

()

let shopName : UILabel = 

    let shopName = UILabel()
    shopName.backgroundColor = UIColor.gray
    shopName.text = "Kimling"
    return shopName

()

let shopLocation : UILabel = 

    let shopLocation = UILabel()
    shopLocation.backgroundColor = UIColor.white
    shopLocation.text = "Kondhwa"
    return shopLocation

()

let seprater : UIView = 

    let seprater = UIView()
    seprater.backgroundColor = UIColor.white
    return seprater
()



override func viewWillAppear(_ animated: Bool) 
    super.viewWillAppear(true)

    navigationController?.navigationBar.tintColor = .white
    view.backgroundColor = UIColor.white


override func viewDidLoad() 

    super.viewDidLoad()

    MainScrollView = UIScrollView()
    MainScrollView?.isScrollEnabled = true
    MainScrollView?.indicatorStyle = .default
    MainScrollView?.contentSize = CGSize(width:self.view.bounds.width, height: 8000)
    MainScrollView?.backgroundColor = UIColor.purple

    setupViews()


   func setupViews()

    view.addSubview(MainScrollView!)
    MainScrollView?.addSubview(viewForScrollview)

    viewForScrollview.addSubview(shopImage)
    viewForScrollview.addSubview(shopNameandAddresView)
    viewForScrollview.addSubview(timePaymentDetail)

    addConstraintsWithFormat("H:|-0-[v0(414)]-0-|", views: MainScrollView!)
    addConstraintsWithFormat("V:|-0-[v0(8000)]", views: MainScrollView!)

    addConstraintsWithFormat("H:|-0-[v0(414)]-0-|", views: viewForScrollview)
    addConstraintsWithFormat("V:|-0-[v0(8000)]", views: viewForScrollview)


    addConstraintsWithFormat("V:|-0-[v0(1000)]-0-[v1(1000)]", views: shopImage,shopNameandAddresView)
    addConstraintsWithFormat("H:|-0-[v0]-0-|", views: shopImage)
    addConstraintsWithFormat("H:|-0-[v0]-0-|", views: shopNameandAddresView)

【参考方案1】：

像这样使用

 override func viewDidLayoutSubviews()

  MainScrollView?.contentSize = CGSize(width:self.view.bounds.width, height: 8000) 

【参考方案2】：

似乎 in viewDidLoad 布局没有完成，所以 scrollView 不会滚动，因为它没有适当的 contentSize 尝试将 ViewWillAppear 中的 contentSize 设置为

MainScrollView?.contentSize = CGSize(width:self.view.bounds.width, height: 8000)