Sizes and names on icons and launch images in Xcode 5, ios 7

Question

I recently downloaded xcode 5 and work now for ios 7. How do I add Icon-images to the project now? What is the sizes that I need and do they have to have specific names? I also want to know this things about the launch images. I have searched on google and stuff but I find different answers and I want to know the right answer. I do also wonder if I put this icons in my project for ios 7 does it work for those who have ios 6?

Thanks!

Answer 1

Here the guidelines iOS for all icons and the new guidelines for iOS 7 here.

and Here a website to create all size of your icons for iOS 6, 7 and Android with the 1024*1024.