Facebook Connect in Java

Generating QR-Code in Java Facebook Connect
13 Facebook Connect
Making QR Code In Java
Using Barcode maker for Java Control to generate, create QR Code JIS X 0510 image in Java applications.
users to search or import their friends Both fields are only enabled after a review by Facebook, and supporting documentation must be supplied in the text boxes below them
Creating Bar Code In Java
Using Barcode generation for Java Control to generate, create bar code image in Java applications.
The Friend Linking settings on the Connect tab in the Developer Settings
Bar Code Reader In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
The Widgets tab contains settings for widgets and the Comments Box (see Figure 1311)The Administrators field is a list of users who can edit Widget settingsAll users listed as developers of the Connect application are also able to edit these settingsThe Moderators field is a list of users who can moderate the content and modify the whitelists and blacklists for a widgetA whitelist contains the list of users who can see or interact with a widget, while a blacklist contains a list of users who cannotThese are set on a perwidget basisThe Notification Subscribers field is a list of users who are notified when a widget s content changes The Permissions Mode setting for the Comments Box can be set to Whitelist to only allow whitelisted users to see it or Blacklist to prevent only blacklisted users from seeing itThe Whitelist and Blacklist fields are lists of those users who are allowed to interact with the widget and those who are not, respectively Finally, the Allow Anonymous Comments check box allows non-Facebook users to interact with the Comments BoxWidgets, including the Comments Box and Live Stream Box, are detailed in the section, Widgets Another change that sites using Facebook Connect have to make is to include http: //staticakconnectfacebookcom/js/api_lib/v04/FeatureLoaderjsphp instead of the Facebook JavaScript version, http://staticakfacebookcom/js/api_lib/v04/FeatureLoaderjsphp, to get the FeatureLoader loadedYou can always get the latest Facebook Connect information from http://wikidevelopersfacebookcom/indexphp/Category:Facebook_Connect
QR Printer In Visual C#
Using Barcode creation for VS .NET Control to generate, create Quick Response Code image in .NET applications.
User Authentication
QR Code Generation In Visual Studio .NET
Using Barcode generation for ASP.NET Control to generate, create Denso QR Bar Code image in ASP.NET applications.
The Widgets settings on the Widgets tab in the Developer Settings
Denso QR Bar Code Encoder In .NET Framework
Using Barcode drawer for .NET Control to generate, create QR Code 2d barcode image in .NET applications.
User Authentication
QR-Code Creation In Visual Basic .NET
Using Barcode encoder for .NET framework Control to generate, create QR-Code image in Visual Studio .NET applications.
Authentication for Facebook Connect is the most complicated part of the implementationThis is because external sites already have user management systems in place and must integrate Facebook Connect into themA successful integration must handle both new account creation and linking of existing accounts Authentication consists of two concepts: being logged in and being connected Being logged in means that a user is logged in to FacebookA user s logged in state is global: She is either logged in to Facebook and all Connected sites or logged out of Facebook and all Connected sites Being connected is similar to authorizing a Facebook application; the user has linked her account with the site and authorized it to interact with Facebook A user must be logged in to be connected
Bar Code Creation In Java
Using Barcode creator for Java Control to generate, create barcode image in Java applications.
Detecting Login Status
Draw ECC200 In Java
Using Barcode generation for Java Control to generate, create Data Matrix 2d barcode image in Java applications.
When the Connect library is first loaded, it uses the cross-domain communication method outlined in 12 to get the user s login status It creates an IFrame with its src attribute set to http://wwwfacebookcom/extern/login_statusphpThis page reads the Facebook cookies, retrieves the user s login status, and passes it back to the site s xdreceiverhtml IFrame, which passes it back to the main IFrameThe Connect library then stores that login state in cookies for the external domain and sets its internal variables to the login state If a page wants to ensure that all visitors are logged in to Facebook and have authorized the site, it can call the FBConnectrequireSession() function after Library
Paint USS Code 39 In Java
Using Barcode encoder for Java Control to generate, create Code 39 Extended image in Java applications.
13 Facebook Connect
Creating USS-128 In Java
Using Barcode creation for Java Control to generate, create GTIN - 128 image in Java applications.
initialization, as Listing 131 demonstrates FBConnectrequireSession() first checks the cookies, and if the user is not logged in, pops up a login dialog instead of doing a redirect to the Facebook login page as the FBapiClientrequireLogin() function doesThis can be useful on pages where a manual login method is not appropriate
Create UPC Symbol In Java
Using Barcode generator for Java Control to generate, create GTIN - 12 image in Java applications.
Listing 131 Forcing Users to Connect Using requireSession()
MSI Plessey Creation In Java
Using Barcode drawer for Java Control to generate, create MSI Plessey image in Java applications.
<script type="text/javascript" src="http://staticakconnectfacebookcom/js/api_lib/v04/FeatureLoaderjsphp"> </script> <script type="text/javascript"> var apiKey = 'XXXXXXXXXXXXXX'; var xdReceiverPath = 'xd_receiverhtml'; FBinit(apiKey, xdReceiverPath); FBensureInit( function() { FBConnectrequireSession( function() { // The user is connected }); }); </script>
EAN128 Generation In Visual Studio .NET
Using Barcode creator for .NET framework Control to generate, create GTIN - 128 image in VS .NET applications.
Pages can dynamically handle the user s connection state by either passing extra parameters to the FBinit() function or by calling the FBConnectifUserConnected() function Both are asynchronous and accept parameters that are either a URL to navigate to or a function to call for each connection state Listing 132 shows how to use the FBinit() and FBConnectifUserConnected() functions In the real world, these functions are never used togetherA developer chooses one or the other depending on what makes the most sense for the site In the example, we pass callbacks to each functionWhen the user s connection state is detected, the callback for that state is calledThis technique is useful for dynamically displaying information based on login state, such as the Connect button, or for sending logged-in users to a members-only page
Making Data Matrix 2d Barcode In .NET Framework
Using Barcode printer for .NET Control to generate, create Data Matrix image in .NET framework applications.
Creating Barcode In VS .NET
Using Barcode creator for ASP.NET Control to generate, create barcode image in ASP.NET applications.
Barcode Creator In Visual Basic .NET
Using Barcode drawer for .NET framework Control to generate, create bar code image in .NET applications.
Decoding GS1 - 13 In VS .NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET applications.