Community Calendar

The closest thing a a community calendar in the Android world is the one started by a bunch of blogger sites including androidguys and anddroidandme
To subscribe to the community maintained Android global events calendar see here:
http://www.google.com/calendar/embed?src=g72pef2iiuu28hmedcnce5h0u4%40group.calendar.google.com&ctz=Europe%2FLondon&gsessionid=ycdhn2eV3gvznWmB8IIIlQ

Upcoming Android Related Events

Mobile World Congress (MWC), Barcelona
15 – 18th Feb
€599 – €4,999
http://www.mobileworldcongress.com
The world’s largest mobile event

Google IO, San francisco
May 19th & 20th
$400/$500/ student $100
http://code.google.com/events/io/2010/
Google’s annual global get together.

Londroid – The London Android meetup
Monthly, free
http://www.meetup.com/android
http://www.londroid.co.uk
Skillsmatter London
- Jan21, Feb18, Mar18, Apr22, May20, Jun17
Our fave monthy meeting. Very much recommended.

GeoMob
Monthly meetings, London 21Jan
http://gmdlondon.ning.com/

Droidcon Berlin, Nov? TBD £100
Droidcon London, Dec? TBD £100
Last year’s explicitly Android themed conference events. Dates will likely be announced within a few months.
http://www.droidcon.de/

Android Meetup Barcelona
16Feb (while MWC)
http://eventuo.com/of/barcelona-androides
A month;y get together in Barcelona. We’ll be attending the one held during MWC.

Android Stammtisch Berlin, C-base
http://www.android-in-berlin.de/
Jan 27, Feb 24
The monthly meetup held in Berlin’s excellent C-base hackspace.

JavaUserGroup
Monthly
http://jroller.com/javawug/

Chigago Android eco-challenge hacakthon
Feb 6th, $1
http://chigtug6.eventbrite.com/

Mobile Monday London
Monthly meetings
http://momolo.org/

FosDem, Brussels Belgium
6-7th Feb
http://fosdem.org/2010/

AppJam
http://www.meetup.com/App-Jam/

Mobile Geeks of London
Monthly meetup
facebook group

CTIA Wireless, Las vegas
March 23-25
http://www.ctiawireless.com/

WhereCampEU
March 12,13th
London
http://wherecamp.eu/

Podcasts

Androidguys – http://www.blogtalkradio.com/androidguys
Motodev – http://www.blogtalkradio.com/motodev
The Java Posse – http://javaposse.com/

Community hotspots

IRC – irc.freenode.net  – #android, #android-dev
The most active community channel for developers just generally getting together and chatting has been the IRC chat room from Android’s conception. A regular haunt for the members of Google’s Android team this chatroom is a the closest thing to a point of contact with the Android team.

Sites

Android neighbourhood – http://okmijnt.appspot.com/ – The AndroidNeighbourhood was started as an extension to the official android site listing all of the upcoming worldwide Android events.
Android and Me – Popular Android enthusiast website with good periodicals and reporting
planetandroid.com – The big daddy Android aggregator. If you watch one site for Android news, watch this one.
anddev.org – This forum has remained one of the most active communities in enthusiast Android development since the early betas
android-devices.net - nice source for upcoming Android devices.
androidbloke.co.uk – UK based news source
androidguys.com – A popular community for android developers and enthusiasts alike
Open intents Group – The chat group for Open intents

Projects

The most important open source projects are undoubtedly:
Open intents -  Open intents is a project to publically declare agreed standards for intents outside Google. The source repo for open intent projects is here: http://code.google.com/p/openintents/
and the open intents registry – http://www.openintents.org/en/intentstable ,
Open Android Alliance – http://code.google.com/p/open-android-alliance/

Although there has been very little movement from the open android alliance, open intents are very active.
Some notable other libraries that which we believe are useful:

Android – source.android.com
Commonsware – Lot of very interesting and useful Android projects including code for caching, tutorials and helpful Adapters.
Droid-fu – A utility library for your daily Android needs
Calculon – Story based functional tests
Angle – an open GL game engine
Live Android – An Android Live OS CD for x86
Android x86 project – x86 ports
Android on Github – Mirror of Android repo
Phone Gap – Take advantage of platform specific features through a generic Javascript API

Signpost – A light-weight client-side OAuth library for Java
RESTProvider - Automatically parses RESTful API responses into a Provider in Android
Maven-android-plugin maven build plugin for android, useful for continuous integration.
OAuth dashboard / providers – An OAuth Library/application for Android. Acts as a dashboard for users permissions that they have allowed/dissalowed to applications and for developers gives them an easy way to securely authenticate using a thirdparty android OAuth implementation.

Busybox – See here for how to install on Android. Adds chown, chgrp, awk, sed, grep, du, vi, pidof, less, tail, gunzip, gzip, tar, bzip2, clear, crontab, crond, diff, httpd, telnet, xargs, su, wget, which
DoomForAndroid – http://code.google.com/p/doom-for-android/ – Doom
androidscreencast – http://code.google.com/p/androidscreencast/ – Control an android device remotely

Twitter

Most popular twits: http://wefollow.com/twitter/android
A list of Android related people I think are worth following on twitter here: http://twitter.com/kevinmcdonagh/droids/members