Failing to open active session after updating Facebook SDK to 3.5

Question

After updating the Facebook sdk to 3.5, when trying to perform openActiveSessionWithReadPermissions the operation fails. Here is the snippet for opening the session and handling the callback:

[FBSession openActiveSessionWithReadPermissions:@[@"email", @"user_hometown", @"user_location", @"user_birthday"]
                                   allowLoginUI:YES
                              completionHandler:
 ^(FBSession *session,
   FBSessionState state, NSError *error) {
     switch (state) {
         case FBSessionStateCreatedTokenLoaded:
         case FBSessionStateOpenTokenExtended:
         case FBSessionStateOpen:
         {
             completion(TRUE);
             break;
         }
         case FBSessionStateClosed:
         case FBSessionStateClosedLoginFailed:
             completion(FALSE);
             [FBSession.activeSession closeAndClearTokenInformation];
             break;
         default:
             break;
     }
 }];

I end up in the FBSessionStateClosedLoginFailed case and I get a FBSKLog as follows:

FBSDKLog: Cannot use the Facebook app or Safari to authorize, fb123456789012345 is not registered as a URL Scheme

score 25 · Accepted Answer · edited Sep 17 '13 at 20:15

25

I Had the same problem (Facebook SDK 3.5.1)

My URL scheme for Facebook was on Item 1 in the Info.plist URL schemes. Problem fixed by moving it to Item 0.

edited Sep 17 '13 at 20:15

iwasrobbed

46,496
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195

answered Apr 25 '13 at 11:05

Lola

366
2
5

1

So amazing! But why is that? – Tony Jun 21 '13 at 07:14

Sapozhnik Ivan · Answer 2 · 2016-06-30T20:48:47.790

16

I had the same problem. The code above fixed this issue. U have to edit your .plist file with text editor. But in Xcode u will not see any changes. Instead of URL Types - CFBundleURLTypes and instead of URL Schemes should be CFBundleURLSchemes.

<key>CFBundleURLTypes</key>
<array>
    <dict>
        <key>CFBundleURLSchemes</key>
        <array>
            <string>fb48524**********</string>
        </array>
    </dict>
</array>

edited Jun 30 '16 at 20:48

answered Jul 04 '13 at 19:37

Sapozhnik Ivan

235
3
7

Worked for me too. Stupid XCode! – Guy Lowe Jun 30 '14 at 23:53
This was the solution for me as well. Really weird bug/issue. – Jacob Rohde Aug 01 '14 at 05:44

score 10 · Answer 3 · answered Apr 19 '13 at 21:22

10

It seems that I had a URL Scheme that didn't match my FacebookAppId. For whatever reason this didn't seem to be a problem before but is relevant now. Make sure your Facebook URL Scheme is your FacebookAppID prefixed with fb (in your .plist files). For example:

FacebookAppId: 123456789012345

URL types -> Item 0 -> URL Schemes -> Item 0: fb123456789012345

answered Apr 19 '13 at 21:22

alexgophermix

4,189
5
32
59

1

Having same problem. Tried this this but can't get rid of it. Please Help – iOS Monster Apr 24 '13 at 08:32

score 2 · Answer 4 · answered May 14 '13 at 12:45

adding URL Scheme in plist file is solved my problem

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<array>
    <dict>
        <key>CFBundleURLSchemes</key>
        <array>
            <string>fb8947128947(fb<App ID>)</string>
        </array>
    </dict>
</array>
</plist>

score 2 · Answer 5 · edited Jan 22 '15 at 05:58

2

I am getting the same error but solved by below info.plist hierarchy:

`
 <key>URL Types</key>
 <array>  
   <dict>
     <key>URL Schemes</key>    
     <array>      
      <string>fb***</string>    
     </array>    
   </dict> 
 </array>
`

edited Jan 22 '15 at 05:58

alexzg

845
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answered Sep 12 '14 at 08:00

Mehul Chuahan

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Welcome to StackOverflow! This answer only discusses that it might solve the problem. Would be good if you can also give rational as to why and how it will fix the problem and why did it happen in the first place. – Nilesh Sep 12 '14 at 08:03

score 1 · Answer 6 · answered Apr 26 '13 at 12:58

Lola's answer worked for me. If you have multiple URL Types - e.g. Facebook's and one for your app - it's helpful to give the one you handle yourself a bundle identifier equal to your app's bundle identifier, then iterate through your URL Types to find it.

At the beginning of my app delegate I just run:

NSArray *urlSchemes = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleURLTypes"];
for (NSDictionary *scheme in urlSchemes) {
    if ([[scheme objectForKey:@"CFBundleURLName"] isEqualToString:[[NSBundle mainBundle] bundleIdentifier]]) {
        self.urlScheme = [[scheme objectForKey:@"CFBundleURLSchemes"] objectAtIndex:0];
        break;
    }
}

and then (since we have multiple environments with different FB App Ids)

-(BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
    if ([url.scheme hasPrefix:@"fb"]) {
        //Facebook callback
        return [FBSession.activeSession handleOpenURL:url];
    // else handle your own URL here

Failing to open active session after updating Facebook SDK to 3.5

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