Technical guide: Upgrading Flex 3 applications to Flex 4 SDK
Created
12 December 2010
Requirements
Prerequisite knowledge
Knowledge of Flex 3 and Flex 4.
User level
All
Required products
- Flex 4 (Download trial)
- Flash Builder 4 (Download trial)
Sample files
This technical guide is for developers who are upgrading to Flex 4 SDK. By upgrading, we mean "beginning to use the new version of Flex." It focuses on the material you’ll want to know as you begin to use this new version of Flex. Though you will likely find information in this guide that you can use if you are migrating a Flex project, that is, to move and update a project from one version of Flex to the next, there are other documents that are more focused on moving and updating a project from earlier versions of Flex to Flex 4 (see Chapter 4 of the Adobe Flex 4 Features and Migration Guide, for example ). Also, see the "Migrating Flex 3 Projects to Flex 4" section of this document for an overview of the migration process.
While it is impossible to cover all the aspects of any nontrivial framework or language in only 40 pages, we are confident that after reading this document you’ll manage to find your way on Flex 4 projects. On the web there are many interesting articles on Flex and there is extensive documentation on the Adobe website. This document is not intended to duplicate that content. Instead, we have strived to keep it focused on what you need to know, so you have enough information to get started and you know where to look for more.
Read the complete technical guide (PDF, 599K)
Where to go from here
Here are some of the resources you’ll find helpful when you upgrade your Flex 3 applications to Flex 4 SDK:
- Adobe Developer Connection
- Online documentation on Flex 4 and Flash Builder 4
- Adobe TV
- Tour de Flex
- What’s new in Flex 4
- Differences between Flex 3 and Flex 4
- Flex 4 Features and Migration Guide
- A brief overview of the Spark architecture and component set
- What’s new in Flash Builder 4
- Moving from Flex 3 to Flex 4
- Data-centric development with Flash Builder 4
- Effects in Flex 4: Part 1 and Part 2
- Introducing skinning in Flex 4
- Spark layouts with Flex 4
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This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License. Permissions beyond the scope of this license, pertaining to the examples of code included within this work are available at Adobe.
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- Migrating Flex 3 applications to Flex 4.5 – Part 4: Using Spark Panel, List, DataGrid, and VGroup components and adding custom skins and states
- Migrating Flex 3 applications to Flex 4.5 – Part 3: Introducing Spark components and simple skins
- Migrating Flex 3 applications to Flex 4.5 – Part 1: Importing the Flex 3 Dashboard application into Flash Builder 4.5
- Migrating Flex 3 applications to Flex 4.5 – Part 2: Beginning migration of the Dashboard application to Flex 4.5
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