Supporting both iOS 5 and iOS 6 with the Facebook SDK 3.1

Question

I have an app that currently supports posting to Facebook through the feed dialog using the old Facebook SDK for iOS.

After updating to the Facebook SDK 3.1 for iOS,

Answer 1

I think you will get an "duplicate error" if you use both. I know it sucks.

Ive been messing with the duplicate error for days now. Please let me know if you got there.

Answer 2

You'll probably have to abstract out a common interface and implement it twice in separate source files (so the compiler never sees Facebook.h and FacebookSDK.h in the same file).

Answer 3

Just include Facebook.h instead. To do this first, Copy the DeprecatedHeaders folder into your Frameworks project. The DeprecatedHeaders are found under ~/Documents/FacebookSDK/FacebookSDK.frameworks/Versions/A/. When you copy it over do not copy the items into your project, so they stay copied as a reference.

Next, in your code where you have:

#import <FacebookSDK/FacebookSDK.h>

Replace with this:

#import "Facebook.h"

You may get an error, in which case close and reopen the project.

Next you want to declare a Facebook object and set the session or clear it whenever your Session is open or closed.

Take as an example, the sample: https://github.com/fbsamples/ios-3.1-howtos/tree/master/ShareNativeDialogsHowTo that is documented here, https://developers.facebook.com/docs/howtos/share-native-dialogs-ios-sdk/

You could make the following changes to that sample to fallback to the feed dialog instead of falling back to a view controller with a share UI. In ViewController.m you would make these changes after including the Facebook header:

....
@property (unsafe_unretained, nonatomic) IBOutlet UIButton *publishButton;
@property (nonatomic, retain) Facebook *facebook;

....
@synthesize authButton;
@synthesize facebook = _facebook;

....
- (void)sessionStateChanged:(NSNotification*)notification {
    if (FBSession.activeSession.isOpen) {
        self.publishButton.hidden = NO;
        [self.authButton setTitle:@"Logout" forState:UIControlStateNormal];
        if (nil == self.facebook) {
            self.facebook = [[Facebook alloc]
                             initWithAppId:FBSession.activeSession.appID
                             andDelegate:nil];
            // Store the Facebook session information
            self.facebook.accessToken = FBSession.activeSession.accessToken;
            self.facebook.expirationDate = FBSession.activeSession.expirationDate;
        }
    } else {
        self.publishButton.hidden = YES;
        [self.authButton setTitle:@"Login" forState:UIControlStateNormal];
        self.facebook = nil;
    }
}

- (void) publishUsingFeedDialog {
    // Put together the dialog parameters
    NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                   @"Facebook SDK for iOS", @"name",
                                   @"Build great social apps and get more installs.", @"caption",
                                   @"The Facebook SDK for iOS makes it easier and faster to develop Facebook integrated iOS apps.", @"description",
                                   @"https://developers.facebook.com/ios", @"link",
                                   @"https://raw.github.com/fbsamples/ios-3.x-howtos/master/Images/iossdk_logo.png", @"picture",
                                   nil];

    // Invoke the dialog
    [self.facebook dialog:@"feed" andParams:params andDelegate:nil];
}


- (IBAction)publishButtonAction:(id)sender {
    BOOL displayedNativeDialog =
    [FBNativeDialogs
     presentShareDialogModallyFrom:self
     initialText:@""
    ....

    if (!displayedNativeDialog) {
        /*ShareViewController *viewController =
        [[ShareViewController alloc] initWithNibName:@"ShareViewController"
                                              bundle:nil];
        [self presentViewController:viewController
                           animated:YES
                         completion:nil];*/
        [self publishUsingFeedDialog];
    }
}

Answer 4

Try to import

"FBSession.h" 

instead of

#import<FacebookSDK/FacebookSDK.h>

it will solve the duplicate error..

Answer 5

It's impossible, you should use Graph API https://developers.facebook.com/docs/howtos/publish-to-feed-ios-sdk/ instead of Feed Dialog :(