Android is Google's software stack for mobile devices. For non-developer questions, see http://android.stackexchange.com
Developed by Google and the Open Handset Alliance.
Android Developers (developer.android.com)
Contains the SDK downloads, documentation, class reference and tutorials. Start here.Android Developers Blog
Google's blog for Android developers, discussing technical topics as well as those relating to Android Market.+Android Developers on Google+ News and announcements for developers from the Android team at Google. Also a venue for discussion of recent news and announcements.
@AndroidDev on Twitter News and announcements for developers from the Android team at Google.
Android Developers Google Group
Alternative developer discussion forum for Android.Android Open Source Project (a.k.a. AOSP)
Contains all necessary information about the Android source code.Android page on Wikipedia
Detailed information about the Android OS.Android.com
General information about the Android OS.Google I/O 2010 developer conference
Contains detailed videos and slides by Android product engineersGoogle I/O 2011 developer conference
Contains videos and slides by Android product engineersGoogle I/O 2012 developer conference
Contains videos and slides by Android product engineersGoogle Maps API
The Google Maps API port for Android, which provides many infos on how to use the Maps API on Android (which can not be found on the Android Developer site)
For non-developer questions, see the Android Enthusiasts StackExchange.
Android Development Book Recommendations
Hello, Android by Ed Burnette
Android Apps for Absolute Beginners by Wallace Jackson
Professional Android 2 Application Development by Reto Meier
Android Wireless Application Development by Shane Conder & Lauren Darcy
Pro Android Media: Developing Graphics, Music, Video, and Rich Media Apps for Smartphones and Tablets by Shawn Van Every
The Android Developer's Cookbook: Building Applications with the Android SDK by James Steele & Nelson To
Android Application Testing Guide by Diego Torres Milano
Beginning Android 3 by Mark L. Murphy
Programming Android by Zigurd Mednieks
