A set of unofficial Android Design Guidelines from the folks at Mutual Mobile. I found it to be a useful translation of the Android Developer design guidelines into “design speak”.
Useful recommendations include:
- Dimensions for common UI elements (such as tab bar) across devices
- When to customize or go with default UI components
- Things to watch out for when specifying rich visual design
- How to size & export button/icon assets
- Using draw9patch
- … and all sorts of other little hints & tricks for avoiding Android “design disasters”