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Flash Facebook Cookbook
Flash Facebook Cookbook

Flash Facebook Cookbook: Over 60 recipes for integrating the Flash Platform applications with the Graph API and Facebook.

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Flash Facebook Cookbook

Chapter 2. Authenticating with Facebook

In this chapter, we will cover:

  • Authentication with the Web SDK, for Flash Player applications

  • Authentication with the Desktop SDK, for AIR applications

  • Logging out of Facebook

  • Retrieving information about the current session and active Facebook user

  • Reacting to Facebook session changes that occur outside our Flash movie

Introduction


Before we can load any data through the Facebook APIs, we will need to authenticate our application, and we'll need to do this each time our Flash movie is displayed in the HTML page (or each time our AIR application is launched).

The authentication process is fairly complex, based as it is on the OAuth 2.0 protocol, but it is thankfully wrapped up nicely and neatly by the Facebook ActionScript 3 SDK, so our actual setup in ActionScript isn't too complex.

This next image outlines the major layers involved when communicating with Facebook, through the Facebook ActionScript 3 SDK, from a Flash Platform application. It doesn't comprehensively outline every interaction or capability of the platforms, but it should give you an overview of the elements involved.

Facebook authentication is built around the OAuth 2.0 protocol, which in conceptual terms means that instead of having the user enter their login credentials to our third-party applications, they'll always be entering those credentials...

Authentication with the Web SDK, for Flash Player applications


There are two main steps to the authentication process, when working with Facebook and its ActionScript 3 SDK:

  1. 1. The first step is to initialize the library, passing in a few application settings, such as the API Key, which will then be used to find any active Facebook sessions that our application can use.

  2. 2. The next step is manually logging in to Facebook and creating a new session, although this is optional, depending on whether or not the previous initialization was successful.

In this recipe, we're going to explore the simple tasks of initializing the Facebook ActionScript 3 SDK and logging in to Facebook, for a web-based Flash Player application.

Getting ready

Before we can start working with the Facebook APIs, we'll need the API Key for the application that we set up on the Facebook Developer Portal, in the recipe Setting up a new Application on Facebook from the previous chapter.

Create a new web project in Flash Builder...

Authentication with the Desktop SDK, for AIR applications


The technology that powers the authentication for the Facebook APIs in an AIR-based application is a little different to its equivalent Flash Player-based web application.

As we mentioned in the introduction, the Web version of the Facebook ActionScript 3 SDK relies on the underlying JavaScript SDK. The Desktop version however doesn't have the same luxury—everything that it has to do, such as launching pop-up windows or maintaining user sessions, must be done through ActionScript 3 and the enhanced capabilities of the AIR runtime alone. Fortunately for us however, this functionality has already been built into the Facebook ActionScript 3 SDK.

The methods that we use to work with the Facebook are much the same in the Desktop SDK as those of the web-based SDK, but there are a few important variations in the parameters you pass that means it's not just a case of swapping the root class of Facebook for FacebookDesktop.

In this recipe we...

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Key benefits

  • Work with the key Graph API objects and their social connections, using the Facebook ActionScript 3 SDK.
  • Create new Checkins at Facebook Places and plot existing Checkins and Facebook Places on Flex mapping components.
  • Upload image files or generated images to Facebook.
  • Packed full of solutions using a recipe-based approach.

Description

Flash applications are popular and becoming increasingly social. With flash applications for facebook you can tap into a potential audience of half a billion existing users, their connections and affiliations, their uploaded images, posts, comments and more.The Flash Facebook Cookbook is packed with recipes for the Graph API and FQL, used for reading and writing data as well as interacting with Facebook anonymously or on behalf of an authorised Facebook User.The topics covered by the recipes in this Cookbook include working with News feeds, uploading Photos, searching for and plotting Places on a map and much more. The cookbook has recipes ranging from those that work without any authentication with Facebook to those that do, and act on behalf of a user. Packed with recipes that yield practical demonstrations of the Graph API functionality, the Flash Facebook Cookbook is an essential tool for Flash Platform developers.

Who is this book for?

This Cookbook is targeted towards those with at least a basic understanding of the Flash Builder IDE and the Flex framework. No prior knowledge of the Facebook APIs is assumed or required. If you want to start building Flash Facebook apps quickly and effectively this is the book for you.

What you will learn

  • Plot user Checkins on a map component, and publish new Checkins on behalf of a user.
  • Authenticate with Facebook on behalf of a user.
  • Manage and request additional data read or publishing permissions from Facebook.
  • Use the search capabilities of the Graph API to retrieve specific information.
  • Request specific information from Facebook using SQL-like FQL queries.
  • Retrieve and create cross-links between different objects in the Graph API.
  • Create new Events, invite users and retrieve and modify RSVP information for authenticated users.
  • Integration with Facebook and AJAX sharing dialogs.
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Publication date, Length, Edition, Language, ISBN-13
Publication date : Aug 25, 2011
Length: 388 pages
Edition : 1st
Language : English
ISBN-13 : 9781849690720
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Product Details

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Length: 388 pages
Edition : 1st
Language : English
ISBN-13 : 9781849690720
Vendor :
Adobe
Languages :

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Flash Facebook Cookbook
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Table of Contents

11 Chapters
Getting Started with Flash and Facebook Chevron down icon Chevron up icon
Authenticating with Facebook Chevron down icon Chevron up icon
Working with Facebook Permissions Chevron down icon Chevron up icon
Reading and Writing Data with the Graph API Chevron down icon Chevron up icon
Loading Data with FQL Chevron down icon Chevron up icon
Facebook News Feeds and Status Updates Chevron down icon Chevron up icon
Comments and "Like this" Chevron down icon Chevron up icon
Working with Photos, Albums, and Tags Chevron down icon Chevron up icon
Working with Groups and Events Chevron down icon Chevron up icon
Checkins and Facebook Places Chevron down icon Chevron up icon
Bridging the Flash and Application Gap Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Full star icon Full star icon 5
(3 Ratings)
5 star 100%
4 star 0%
3 star 0%
2 star 0%
1 star 0%
Krzysztof Satola Nov 07, 2011
Full star icon Full star icon Full star icon Full star icon Full star icon 5
There is a place on the web were milions of people spend their time colaborating and clicking "Like this" buttons. The place is very popular so you can also find there Flash applications. Some of you might even think that it could be cool to create some Flash apps or games and publish them to this place. It could pay off, too. This place is called Facebook... Surprise!Facebook and Flash (Flex, AIR) are good friends for some time now. For Flash and other web technologies Facebook team created an API. You can start working with the Facebook ActionScript 3 SDK (utilizing Facebook API) easily by reading Flash Facebook Cookbook by James Ford. The book contains over 60 recipes for integrating Flash applications with the Graph API and Facebook. It can also guide you through the Facebook philosophy and process: including the concept of setting everything up, working with Facebook specifics like authentication (using OAuth 2.0 protocol) or permissions, working with Graph API objects, FQL (SQL-like syntax only for retrieving data from Facebook), news feeds, status updates, "Like this" buttons, images and albums, groups, events and places, and even more. You will find there everything you need to start creating useful Flash-Facebook apps.I had a few problems starting with this book. It seemed that some things were working in a different way on Facebook then described there. The book seemed not to be up-to-date. To make things worse the sample source code organization was hard to follow. I have been founding myself struggling for getting things done sometimes but even though this book helped me to spare lot of time (believe it or not).The Flash Facebook Cookbook is written by a Flash practicioner, you will find there recipes prepared only in one thing in mind: to get things done effectively and properly. It covers not only processes but also tactics and strategies for doing things right. This is very important as doing it myself I would be forced to review tons of documents, tutorials and web sites which I always try to avoid.The book contains a number of recipies which can be read separately but for beginners the best approach would be reading the book from the beginning because latter recipies use the earlier ones, building complexity one of the top of another, which makes sense. This book is a very valuable resource for Flash based Facebook integrators.I have found a few editorial errors like mispelled words or lack of code (e.g. on page 50) but I think it does not matter at all. I "Like this" book in general. It contains lots of useful details and is a big time saver, too :)
Amazon Verified review Amazon
Daniel Albu Nov 19, 2011
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Packt Publishing asked me to review their book: Flash Facebook Cookbook.Since I developed quite a few Facebook apps using Flash, it was interesting for me to see what this book had to offer.I began developing Facebook apps using Flash back in early 2009, when Adobe & Facebook released the Facebook AS3 API.Back then, the AS3 API worked with the old Facebook REST API and was quite limited and very cumbersome.The GRAPH API, which was introduced in 2010, brought along many new features which were previously unavailable and the Flash Facebook Cookbook seems to cover everything that the GRAPH API has to offer!The first few chapters of the book cover the basics of Facebook development and can help developers that are complete strangers to the Facebook platform to take their first steps in becoming Facebook developers.Later on the book starts to cover more advanced features such as reading / writing data to your feed, accessing photos, retrieving data by using FQL (FQL is database-style approach to loading data from the Facebook API) and even dedicates a chapter to the UI changes required in order to give the application a "Facebook" look & feel.The cookbook format of the book can easily appeal to both beginners and more advanced developers as it allows the reader to choose the required code snippet according to the task at hand.All in all, the book is a great resource for developers looking to expand their Flash-based applications & games with the social features that Facebook has to offer.
Amazon Verified review Amazon
Dan Gardner Oct 01, 2011
Full star icon Full star icon Full star icon Full star icon Full star icon 5
If you're going to be doing any Flex/Facebook apps you should think about grabbing this book. I found the Facebook documentation to be rather discombobulated. It's all there but it's hard to know where to start to get something done. And of course the Facebook documentation is mostly useless for Actionscript developers.Personally I like the cookbook format. I want quick intros with just the information I need and then a short and specific example. That's exactly what this book offers. All of the examples are created using Flex with Flash Builder although they could easily be used in a pure Actionscript application as well.I'm not much of a Facebook guy. I've had an account for ages but I rarely use it. When I do it's just to post to my wall. I've never even uploaded an image to Facebook. So I'm really a novice when it comes to understanding Facebook itself let alone the API. I was really happy that this book covered the basics and didn't just assume I was a Facebook power user. The first few chapters of this book did a great job of breaking down how the app ecosystem works and how to work with OAuth and Facebook permissions. Things that we totally new to me.
Amazon Verified review Amazon
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