Generally there are two ways for building Android projects. Either with Eclipse and the AVD plugin or independently from an IDE with Ant-scripts form the command line.
Download and install the Android SDK according the official documentation: http://developer.android.com/sdk/installing/index.html
Add the "tools" and "platform-tools" directories from the SDK to the executable path of your system.
Run the following commands inside the root directory of this (AAT) project. android list targets android update project --name AAT --path . --target X Where X is an ID listed by the first command This will create the android ant scripts.
build the project with the commands: ant clean ant debug If you are lucky this will create "bin/aat-debug.apk".
Download and install the Android SDK as described in above section.
Install Eclipse
Install the ADT plugin from within Eclipse.
Help->Install new software
In Window->Preferences->Compiler
set JDK Compliance to 1.6
Import AAT:
File->import->existing project
copy projects into workspace
and then select finish
Android Tools -> 'Fix project properties
in the project's context menu