Is using constraint/auto-layout on iPad a mandatory?

Question

All iPad screens, iPad 1, iPad 2 ... , iPad Retina and Mini iPad have the same screen ratio. width/height or height/width or width:height

So, Why do we need to use constraints for the iPad views?!

I also believe that in interface builder when you select the view controller, you can view it as iPad or iPhone. there is many iPhone options but only one iPad option. you can do that by clicking the size drop down list in the Attributes Inspector .

Is there any of the iPad screens that have more or less screen points comparing to others? "Screen Points" not "Screen Pixels" if yes, Which one is that?

Answer 1

You don't have to use auto layout, but it's a good idea to. Once you understand it it's faster to work with, more flexible and very powerful for animations. You should also consider device rotation and usage for things like multi-tasking (ios9, use size classes too).

Answer 2

If you Design your Screens in Width Any / height any than your design will run on any iphone and Ipad Screen with autolayout. And it's a good practice too. if you want any change for iphone / ipad screen than you can remove that constraint for particular devices.add particluar constraint for particular devices.