Monday May 03, 2010

JavaFX + Facebook


One of my previous post discussed about OAuth based authentication for Twitter, LinkedIn and Yahoo. Here I'll discuss about authentication and usage of Facebook. It also provides OAuth based authentication, but the flow and usage is slightly different. Please refer to Desktop Application Authentication for more information.

For new application, please ensure that you register your application with Facebook. Specify Connect URL as base URL of deployed applet. Note down Application ID which will be used as client_id. Using client_id and Applet URL we can create the authorization URL as shown below.

Authentication Steps:

  • Click on above link and login to Facebook
  • Authorize JavaFX Sample application to access your Facebook profile
  • Page will be automatically redirected to the JavaFX Applet page
  • Extract the access_token parameter from URL
  • Pass access_token to JavaFX Applet as argument
  • Use Facebook Graph API to access all rest of information

Please refer to JavaFXFacebook.html for more information related to extraction and passing of access_token and client_id to JavaFX Applet. The view is implemented using ListView. Please refer to New to JavaFX 1.3: Cells for usage on ListView + ListCell APIs.

Update: There was some confusion due to additional steps related to "redirection of url to applet". Yes, Twitter, LinkedIn and Yahoo didn't have this concept. The difference is, there user needs to copy the access_token numbers from the page and paste it in application. In case of Facebook, due to url-redirection, the access_token can be automatically passed to application as argument. So user don't have to do any copy-paste.

Try it out and let me know feedback

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The views expressed on this blog are my own and do not necessarily reflect that of my organization

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