This document provides an overview of contributing to and developing apps for Firefox OS. It discusses Firefox OS architecture including Linux/Gonk, Gecko, HTML5 apps, and web APIs. It also covers setting up a build environment, hardware requirements, porting guidelines, bug reporting, adding features, and developing apps using a manifest file and web APIs like battery status and making phone calls. Contact information is provided for further assistance.

1. Getting Started
Contributing to Firefox OS
Benjamin Kerensa
Alex Lakatos

2. Why Firefox OS
• 1.2 billion people without access to
smartphones or tablets
• Eliminate price sensitivity barrier
• Empower people worldwide to build
the Open Web
• Create a platform where Open Web
technologies are a first class citizen

3. Firefox OS Now

4. Firefox OS Architecture
Linux/Gonk (ADB enabled)
Gecko rendering engine
Third Party HTML5 Apps
Web APIs / Web Actitivies
GAIA

5. Firefox OS Architecture
- + =

6. Governance

7. Firefox OS Development

8. Build Environment
$ git clone git://github.com/mozilla-b2g/B2G.git
$ B2G/build.sh

9. Hardware Requirements

10. Porting Guidelines

11. Bug Reporting

12. Bug Fixing

13. Adding New Features to Firefox OS

14. Developing an App for Firefox OS

15. Manifest File
{
"name": "My App",
"description": "My elevator pitch goes here",
"launch_path": "/index.html",
"icons": {
"128": "/img/icon-128.png"
},
"developer": {
"name": "Your name or organization",
"url": "http://your-homepage-here.org"
},
"default_locale": "en"
}

16. Web API

17. Battery API
var b = navigator.battery;
if (b) {
var level = Math.round(b.level * 100) + "%",
charging = (b.charging) ? "" : "not ",
chargeTime = parseInt(b.chargingTime / 60, 10),
dischargeTime = parseInt(b.dischargingTime/60,10);
b.addEventListener("levelchange", show);
b.addEventListener("chargingchange", show);
b.addEventListener("chargingtimechange", show);
b.addEventListener("dischargingtimechange", show);
}

18. Web Activities

19. Dial Web Activity
var call = new MozActivity({
name: "dial",
data: {
number: "+1804100100"
}
});

20. Thank You!
Alex Lakatos
@lakatos88
alex.lakatos@mozilla.ro
Benjamin Kerensa
@bkerensa
Github: bkerensa
http://benjaminkerensa.com

21. Links
https://developer.mozilla.org/en-US/Apps/Quickstart/
Build/Your_first_app
https://developer.mozilla.org/en-US/Firefox_OS/
Application_development
https://developer.mozilla.org/en-US/Firefox_OS/
Installing_on_a_mobile_device
https://developer.mozilla.org/en-US/docs/Tools/
Firefox_OS_Simulator