I spent a long time trying to get a contextual action bar (CAB) working for an editing mode in an Android app I'm developing. My goal was to have a CAB appear whenever the user started changing field values on a screen, and the user would tap the Done button …
androiddev
iOS and Android Icon Sizes
Every once in a while, I have to tell a graphic designer all the sizes needed for iOS and Android icons. So I'm putting together a summary here for easy reference.
iOS
For more details on requirements and guidelines for iOS app icons, see iOS Human Interface Guidelines: Icons and …