How to set up different Auto Layout constraints for different screen sizes

Question

I have a tableView with static cells. The cell contains an ImageView which fills it completely. And I have another smaller ImageViews atop. I position this ImageViews with constraints. I have a question about resizing the constraints. How can I set different constraint constants for different devices sizes without programming if/else loops. Is there a way to set it in the storyboard? I have a leading constraint to parent layout for example with an constant value of 10. This is okay for the iPhone 5 screen, but on an iPhone 6/ 6 plus screen it should be higher than 10.

iPhone5 Autolayout

iPhone6 Autolayout

Answer 1

Without writing a single line of Code!

Once my junior developer asked me the same question that how can I differentiate between iPhoneSE and iPhone6 for some constraint at that time there was only one solution that was writing some thing like

if device == iPhoneSE { 
   constant = 44 
} else if device == iPhone6 {
   constant = 52
}

To overcome this issue I created a library Layout Helper so now you can update constraint for each device without writing a single line of code.

Step 1

Assign the NSLayoutHelper to your constraint

Step 2

Update the constraint for the device you want

Step 3

Run the app and see the MAGIC