UIscrollview无法正常工作的iOS Swift

Question

I tried to implement thorugh this method:

override func viewDidLoad() 
{
        super.viewDidLoad()
mainScrollView.contentSize = CGSizeMake(self.view.frame.size.width, 530);
          // Do any additional setup after loading the view.
}

but then also scrollbar not working properly.

Answer 1

self.scrollView.contentSize = self.scrollView.superview！.bounds.size

Answer 2

1. First, you have set scrollview(0,0,600,600)

2. Setting the autolayout for scrollview leading,trailing,top,bottom.

3. Second, you have set contentview inside your scrollview(0,0,600,600)

4. Setting the autolayout for contentview like leading,trailing,top,bottom.

5. Third, Setting contentview width is Equal to superview width.

6. Fourth, Setting contentview height.

7. It's working perfectly.

Answer 3

In this case your mistake is you should not give content size. And for automatic scrolling you can do auto-layout constraint.