Android UI Design

Google Official Design Guideline

Android Design. Android team list design as one of its three components (design, develop and distribute). _ Get Started _ Creative Vision _ Design Principles _ UI Overview _ Style _ Patterns _ Building Blocks _ Downloads * Videos Courses
Best Practices for User Experience & UI
Design for multiple screens
- Supporting Different Screen Sizes
- Supporting Different Screen Densities
- Implementing Adaptive UI Flows
Android Design on Slideshare

pre-Honeycomb and post-Honeycomb comparison

Android UI Patterns
40+ UI Design Tools and Resources
Pencil Project A collection of screenshots encompassing some of the best, most beautiful looking Android apps. Aiming to provide inspiration and insight into Android UI conventions.
android-ui-utils Utilities that help in the design and development of Android application user interfaces. This library currently consists of three individual tools for designers and developers: 1. Android Asset Studio 2. Android Design Preview 3. Pencil Stencils
Design Caffeine, with Agile Mobile Design Webinar Video
Quora: What is the best site(s) for info Android UX and design patterns?
pttrns
Zhihu Design collections
Quora: What are the best open source libraries available for Android?
openintent's open source libraries collection
Wikipedia: List of free and open-source Android applications

Android Bootstrap Bootstrap your next Android Application Android Bootstrap includes a full working implementation of Fragments, Fragment Pager, Account Manager, android-maven-plugin, RoboGuice 2, ActionBarSherlock 4, ViewPagerIndicator, http-request, GSON, Robotium for integration testing, API Consumption with an API on Parse.com and much more.
HoloEverywhere Bringing Holo Theme from Android 4.0 to 1.6 and above.
Android projects on Github is a community on Google+, which provides collections of nice Android open source projects.
gabrielemariotti/changeloglib Android Library to display your changelog