The Android OS

Code Base

Obtain the Android source code

Comply with the Compatibility Definition Document 

Pass the Compatibility Test Suite 

GET the Android GMS

Workflow

Be EQUIPPED

Ubuntu LTS (10.04). From Gingerbread 2.3.x a 64-bit is required

16GB of RAM

30GB disk space

Python 2.6 -- 2.7 e GNU Make 3.81

JDK 6 from Gingerbread onward. JDK 5 for all previous versions

Git 1.7+

Title

Manifest file

<?xml version="1.0" encoding="UTF-8"?> 
   <manifest>
      <remote name="aosp" fetch="../repo" review="https://android-review.googlesource.com/" />
      
      <remote name="xxxx" fetch="." />
      
      <default revision="pharaoh_android4.2" remote="xxxxx" sync-j="4" /> ....
...

... 
<project path="device/xxxxx/xxxx" name="rk/device/xxxxx/Hudl_Tablet"> </project> 

<project path="hardware/alsa_sound" name="platform/hardware/alsa_sound"/> 

<project path="vendor" name="xx/vendor" /> 

<project path="packages/tesco_apps" name="platform/packages/tesco_apps" />
...

DOwnload & COmpile

 INIT: repo init -u https://android.googlesource.com/platform/manifest -b android-4.4.2_r1

 SYNC: repo sync

 CREATE BRANCH: repo start master –all

 DRIVER SCRIPT: https://developers.google.com/android/nexus/drivers#razorkot49h

 CLEAN: make clobber

 BUILD SETUP: . build/envsetup.sh

 LUNCH ENG MODE: lunch aosp_flo-eng

 MAKE: make -j16

 OUTPUT: $AOSP/out/target/product/flo/

INSTALL ON DEVICE

 BOOT IN FLASH MODE: Down + Power

 UNLOCK OEM:  fastboot oem unlock

 EXPORT ANDORID ENV VARIABLE: export ANDROID_PRODUCT_OUT={your images location}

 FLASH IMAGE: fastboot flashall -w # -w wipes the data

Advice & curiosity

Adoption of a Continuous Integration system

Adoption of a Continuous Inspection system

Unit Testing

UI Testing

Tagging

CyanogenMod - Cyanfox - AOKP ...

Sony release - AOSP for Xperia devices

Android is nothing without Google

Getting Google approval is tough

Get their attention

Show the final hardware

Get OK for the OS

Get OK for ANY update of the OS

The office dealing with it is in San Francisco

And they do mistakes as well... test the GMS!

Api               Over the Air Update

OTA - how to

that was fun.