ScrollView doesn't work properly in Xcode

Question

I would display a view in my iOS app, but when I try to use ScrollView, even if I put stack views, it doesn't work.

Here is a screenshot of my storyboard:

I do tests with a long description I put in my code, but the scroll view doesn't work properly. Here are the constraints of my View Controller:

Where the problem could come from?

EDIT:

After deleting the View.centerY = centerY, I get this error:

Scroll View: Need constraints for: Y position or height

Here is my new constraints:

Try removing the constraint View.centerY = centerY. and set the bottom constraint of the collection view to the scroll view's bottom. This could be due to the height of the screen and you are also setting the y constraint in the same case. — Bharath
Thanks, I deleted the constraint but I don't know how to fix the new error. I don't know which contraint to add to fix the "Need constraint for: Y position or height". I edited my first post with screenshot and more details. — cusmar

Milan Nosáľ Milan Nosáľ · Accepted Answer · 2018-02-04T12:57:44

Constraint View.centerY = centerY between the content view and the scrollView will prevent scrolling. Drop that constraint.