There is the Android documentation:
http://developer.android.com/sdk/installing.html
And there is this WordPress blog I found:
http://bhargavg.wordpress.com/2011/12/24/installing-android-development-environment-on-ubuntu-11-10/
Neither worked for me out of the box. But by piecing together bits and pieces from other sources, I think I have managed to configure Eclipse to run with the ADT plugin. I will post a step-by-step guide here with my source.
There is also this nicely detailed step-by-step guide for Ubuntu 10.10 listed in another question that deserves mention:
http://www.futuredesktop.com/maverick/android/developing_android_apps_on_ubuntu.html
Again, I don't think the steps listed there will work for 11.10 64-bit, but it offers an excellent overview of the process in general.
Best Answer
1. Install Java Packages
http://thelinuxexperiment.com/guinea-pigs/tyler-b/how-to-install-sun-java6-jdk-and-netbeans-in-ubuntu-11-10/
2. Install ia32-libs
http://android-eclipse.blogspot.com/2011/05/failed-to-get-adb-version-cannot-run.html
3. Select Correct Version of JVM using update-alternative
(install update-alternative with apt-get if necessary)
http://android-eclipse.blogspot.com/2011/05/failed-to-get-adb-version-cannot-run.html
then select the number for:
/usr/lib/jvm/java-6-sun/jre/bin/java
4. Install Eclipse
I installed this version as recommended by google:
http://www.eclipse.org/downloads/download.php?file=/technology/epp/downloads/release/indigo/R/eclipse-java-indigo-linux-gtk-x86_64.tar.gz
This is a guide for 64-bit Ubuntu, so make sure to get the 64-bit version
Download, unzip, double-click eclipse file in root dir to launch
5. Install SDK Start Package
I just followed the Android docs here:
6. Install Android Platforms
http://bhargavg.wordpress.com/2011/12/24/installing-android-development-environment-on-ubuntu-11-10/
Double click
android-sdk-linux/tools/android
7. Install ADT Plugin
Follow steps for downloading and configuring:
8. Add these lines to bottom of .bashrc
https://stackoverflow.com/a/8693384/1093087
To edit:
type in lines above with correct paths:
9. Restart Eclipse
If successful, you should see no errors on startup and console panel will say:
Android