iOS Programming Cookbook

How to do it...

1. Create a new Xcode project with Single View Application template and with the ScrollViewDemo name.
2. Open Main.storyboard to build a login screen where the user will be able to enter his credentials and we will later come across a situation where we will need the scroll view.
3. Open ViewController screen in storyboard to add a scroll view. From Object Library, drag a scroll view that fills the whole screen with the following constraints:

      ScrollView.trailing = superview.trailing 
      ScrollView.top = superview.top 
      ScrollView.leading = superview.leading 
      ScrollView.bottom = superview.bottom 

4. Add an empty view that identifies the boundary of the scroll view that has the same frame of scroll view. Add all these constraints to the view: ...