Position of my UIButton are varying for in all simulator

Question

I am under one project.In that I created one uibutton at bottom of my viewcontroller using code (Not via storyboard).But when i run my app,my uibutton are placing in differents

Answer 1

As per all comments about your question.You need to set constraint for your UIButon.Use only centre x,centre y because that will helpfull to see your layout in all devices. And there is a already solution for your problem.see these below links for setting auto layout for UIButton

Link 1

Link 2

Link 3

Sure this will help you !