changing constraints at runtime in swift

Question

I\'m really very weak in constraints part of ios. I have gone through many reference link as shown below but still not able solve my issue.

Hide autolayout UIView : How

Answer 1

just make the outlet of height of both UIView and use constant property to change the height constraints like...

if conditionfails{
     heightconstOfView1.constant = 0
}
else{
    heightconstOfView2.constant = 0
}