Adobe Flex Cookbook

Recent Recipes Latest recipes on Flex

• Draw an audio waveform from an MP3 file
  • Yuri Kolchinski 
  •   February 7, 2010
  • Avg. rating 2.00
  
  

  Problem

  When writing applications that work with audio, it's often useful to be able to draw a waveform of the audio. (That is, a static amplitude-vs-time graph, rather than a dynamic graph of frequencies while the audio plays)

  Solution

  I've written a component that takes an MP3 file and draws its waveform.

• Create a P2P file-sharing application
  • Russ Ferguson 
  •   February 6, 2010
  • Not yet rated.
  
  

  Problem

  The new Flash Player 10.1 NetGroup class supports object replication. You can use this feature to build peer-to-peer file-sharing applications. Has anyone built an app with this functionality? You'll need the following: 1. http://help.adobe.com/en_US/FlashPlatform/beta/reference/actionscript/3/ 2. http://labs.adobe.com/technologies/flashplayer10/ 3. http://labs.adobe.com/technologies/stratus/ OR http://www.adobe.com/products/livecycle/collaborationservice/

  Solution

  Using the Stratus service you can connect to a peer by passing ID's to one another. Sending files happen over the netStream class.

• Tutorials for skinning Spark ButtonBar component with an icon image
  • EladElrom 
  •   January 25, 2010
  • Avg. rating 5.00
  
  

  Problem

  Adobe Catalyst Beta is out and although it allows manipulating and creating some great skins, programmers are not off the hook just yet. Sometimes you need that extra knowledge on how to skin Spark component to get your component to look and behave exactly as you need. In this tutorial I will show you how to skin the ButtonBar component so it has a label text and an icon.

  Solution

  Implementation, which includes the ButtonBar tag pointing to our VerticalButtonBarSkin skin and a click event once the user selected an item. Notice that we define the data we will be passing to the skin, which includes the label text and the icon we will be using to create the button bar image icon.

• AMFPHP + Flex 4 demo
  • Radhakrishna Bhat 
  •   January 24, 2010
  • Avg. rating 5.00
  
  

  Problem

  I would like to see a sample application created using AMFPHP + Flex 4.

  Solution

  Below is a sample application created using AMFPHP and Flex 4 to search and create employee details. Server : Wamp 2.0i

• Loading a local file to a byte array in Flash Player 10 with Flex SDK 3.4+
  • Karl_Sigiscar_1971 
  •   January 22, 2010
  • Avg. rating 5.00
  
  

  Problem

  You want to load a local file to a byte array, without first uploading the file to the server then having to download it back as you have to in Flash Player 9.

  Solution

  Use the new load() method and data property in the FileReference API of Flash Player 10.