How to set dynamic width & height of a view in autolayout in iOS?

Question

I have a UIView in my super view.I have set it some constraints.Now I want the size of view should be different on different devices.If I set the fix width & height then

Answer 1

Use Size Classes. It helps to have different settings for different devices. http://www.raywenderlich.com/83276/beginning-adaptive-layout-tutorial https://youtu.be/IwSTXY0awng?t=2m12s