UIScrollView didn't scrolling? - ios

Question

I'm creating a UIScrollView from code.The only problem is the scrolling is not working go through lot's of the post but didn't find anything.
Here is my code Any help greatly Appreciated.
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)
}
}

Answer 1

Use as this
override func viewDidLayoutSubviews()
{
MainScrollView?.contentSize = CGSize(width:self.view.bounds.width, height: 8000)
}

Answer 2

It seems like the in viewDidLoad layout is not finished so the scrollView wont scroll because it has no proper contentSize try setting the contentSize in ViewWillAppear as
MainScrollView?.contentSize = CGSize(width:self.view.bounds.width, height: 8000)