First step ---------- Add a file local.properties in the root directory which contains sdk.dir=/path/to/android-sdk Building -------- # ant debug Installing ---------- # adb install -r bin/baywinds-debug.apk Release ------- First you need to generate a signing key # keytool -genkey -v -keystore me.keystore -alias me -keyalg RSA -validity 10000 Then update local.properties to include the key store key.store=/path/to/me.keystore key.alias=me Don't forget to update the android:versionName and android:VersionName in AndroidManifest.xml before running # ant release and type the password you used to create your keystore when prompted