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POFacebook iOS SDK 3.0 Re-Authorisation
 

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  1. POFacebook iOS SDK 3.0 Re-Authorisation
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    <p>I have a few of questions about the new FBSession reauthorisation (reauthorizeWithPermissions: behavior: completionHandler:) in facebook sdk 3.0:</p> <p>Once someone has logged in via facebook on my app, on certain pages I would like to re-authenticate the user with his/her facebook credentials. This is to ensure that the person who is viewing the page and the person who initialled logged, are the same. The permissions for re-auth remain the same as login. All i need is a re-confirmation of the user's password to ensure this case. </p> <p>Hence I am using the reauthorisationWithPermissions: to do this. And I am setting the behaviour as FBSessionLoginBehaviorForcingWebView to ensure that the user is forced to enter his/her credentials. However, this does not work at all. It simply pops up a blank webview for a couple of seconds and then disappears... At this point, it calls the FBSesstionStateHandler block with the state set to FBSessionStateOpen, however, fails to call the FBSessionReauthorizeResultHandler defined within the (completionHandler:). </p> <p>However, if I simply set the behaviour to default (FBSessionLoginBehaviorWithFallbackToWebView) it works fine by passing the request back and forth between facebook app/safari and completes the call by calling the completionHandler correctly. However, with the default behaviour it does not force the user to re-enter his/her password.</p> <p>So I am really confused, and the sdk docs on the web are not very useful for my case. Could someone please advise me on what I am doing wrong... or weather its a known bug in the SDK ? If so, how can I go about meeting my requirements ?</p> <pre><code>-(void) reauthThroughFacebook { if ( !self.facebookSession.isOpen &amp;&amp; self.facebookSession.state == FBSessionStateCreatedTokenLoaded) { [self.facebookSession openWithBehavior: FBSessionLoginBehaviorWithNoFallbackToWebView completionHandler: self.stateHandler]; } if ( self.facebookSession.isOpen ) { [self.facebookSession reauthorizeWithPermissions: self.userPermissions behavior: FBSessionLoginBehaviorForcingWebView completionHandler:^(FBSession *session, NSError* error){ if (self.facebookSession == session) { [self completedReauthWithSuccess:(error == nil) error:error]; } }]; } else { [self completedReauthWithSuccess:NO error:[NSError errorWithDomain: @"No active session found." code: FBErrorInvalid userInfo: nil]]; } } </code></pre> <p>Also, once the reauth web view pops up correctly, how do I ensure that the user's email address is auto populated and block the user form changing it ? Can I access the web view within the facebook sdk to set these properties?</p> <p>Finally, what happens to the access token and expiry date if the re-auth takes place with the same permissions as login ??</p> <p>Thank you in advance,</p>
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    1. COI'm wondering the same thing; it seems that in sdk 3.1 the reauthorizeWithPermissions:behavior:completionHandler: method is also deprecated. I'm
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