Andrey Subbotin

He is really passionate about programming and does believe that good software would one day make the world a better place to live. All the Apple hardware, the Human Interface Guidelines, and the Web 2.0 standards make him do his best.

July 26

iPhone 4 @2x assets made easy

We were updating our app’s graphics for the gorgeous screen of iPhone 4 the other day and it was a pain to update all the 163 PNG files we had and not to miss a thing.

So, I’ve come up with a simple Ruby script that checks that for each @1x image you have a properly sized @2x image.

The output it gives is like:

  FILES WITHOUT @1x VERSION ============================================
  status-new@2x.png

  FILES WITHOUT @2x VERSION ============================================
  Icon-Small.png
  logo.png
  message-bubble-left.png
  message-bubble-right.png
  no-photo-icon-boy-small.png
  no-photo-icon-girl-small.png
  nofriendsbg.png
  profile-gallery-super-star.png
  send-button.png
  share-on-network-bounds-rect.png

  INVALID IMAGE SIZES DETECTED FOR THE FOLLOWING FILES =================
  dashboard-checkin-button-full@2x.png: SIZE IS 506 x 94, EXPECTED 596 x 94

You can check it out on GitHub at: http://github.com/eploko/ios-png-check

Hopefully it will make life easier for some of you iPhone developers out there. :)