Here are some excellent resources if you are designing for Android Gingerbread or Ice Cream Sandwich.

Galleries

• My Mobile Design Pattern Gallery has hundreds of screnshots from iOs, Android and other OSs. I also posted a presentation of The Best Android Apps
  The Best Android Apps 2012: A Designers Collection

  View more presentations from Theresa Neil

• After spending months compiling screenshots for the book, I just found this rockin’ Tumblr site with hundreds of screenshots specific to Android, Android Niceties
• 150 Top Andorid Apps, Editor’s Pick. Note, not all of these have a great UI, but it is definitely worth browsing
• As stated, AndroidPttrns is a shameless copy of pttrns.com, the site that catalogs iOS screenshots. Android Pttrns don’t have a lot of material yet, but I’m sure it will grow over time.

Pattern Libraries

• Android Patterns
  
• 4orth Mobile Design Patterns Wiki

Stencils/Templates

Zurb’s excellent OmniGraffle Stencil

Android 4.0 PSD

High Density PSD from Teehan + Lax, June 2011

User Interface Design Guidelines

Android Design

Blogs/ Articles

• Android UI Patterns
• 10 Tips for Android UI Design
• Icon Design

Books

• Mobile Design Pattern Gallery: UI Patterns for Mobile Applications
• Best Android Apps. Keep in mind, best refers to functionality, not best UI design. I pulled the best UI examples from here into my gallery.
• Mobile Design & Development by Brian Fling, free book. This has a really good chapter on Mobile IA.
• Mobile First by Luke W. This is more focused on mobile web, but should be read by all designers tackling mobile design challenges.

Presentations & Videos

• Must Watch, Android 4.0 Design Tips
  Android 4.0 UI Design Tips

  View more presentations from Justin Lee