Integrating Facebook SDK for older versions of Xcode to Support both iOS 5 and iOS 6

问题

I am still using XCode 4.3.2 and iOS 5.1 base SDK. What I want to achieve is to integrate Facebook API for iOS 5.0+ devices. Just basic features such as posting on behalf and getting basic user information.

I am assuming that which ever Facebook SDK works on iOS 5, will work on iOS 6, but I am not sure about that.

As a rookie on Facebook Integration, can anybody shed some light on this issue. ( Since I am working on the project, upgrading the XCode and the iOS SDK is not an option)

• Which iOS SDK should I be looking into?
• Can I support both iOS 5 and 6, with base SDK 5.1 and XCode 4.3?
• Is there an API supporting both iOS versions?
• Any musts for Facebook Integration?

回答1:

First of all you read this article published from Facebook developers

http://developers.facebook.com/docs/getting-started/facebook-sdk-for-ios/

in step 1 it will also work for xcode 4.3

you carefully read all steps one by one n implement

In step6 you write code as follow on where Facebook Btn Pressed

 - (IBAction)facebookBtnPressed:(id)sender
{


        // if it is available to us, we will post using the native dialog
        BOOL displayedNativeDialog = [FBNativeDialogs presentShareDialogModallyFrom:self
                                                                        initialText:[NSString stringWithFormat:@"Here U write code which u want to post on facebook"]
                                                                              image:[UIImage imageNamed:@"1.jpg"]
                                                                                url:[NSURL URLWithString:@""]
                                                                            handler:nil];

        if (!displayedNativeDialog)
        {
            NSString *shareStr = [NSString stringWithFormat:@"Here U write code which u want to post on facebook"];
            NSMutableDictionary* params = [[NSMutableDictionary alloc] initWithObjectsAndKeys:
                                           shareStr,@"description",
                                           @"sharelink", @"link",
                                           @"ImageName", @"picture",
                                           nil];

            [self performPublishAction:^{

                [FBRequestConnection startWithGraphPath:@"me/feed" parameters:params HTTPMethod:@"POST" completionHandler:^(FBRequestConnection *connection, id result, NSError *error) {

                    if (error)
                    {
                        NSLog(@"error in post");
                    }
                    else
                    {
                        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Success" message:@"Post Successfully" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil];
                        [alert show];
                    }

                }];
            }];
        }
    //}

    //===set delagate in Viewcontroller.h of mySLComposerSheet
    [mySLComposerSheet setCompletionHandler:^(SLComposeViewControllerResult result) {
        NSString *output;
        switch (result) {
            case SLComposeViewControllerResultCancelled:
                output = @"Action Cancelled";
                break;
            case SLComposeViewControllerResultDone:
                output = @"Post Successfully";
                break;
            default:
                break;
        } //check if everything worked properly. Give out a message on the state.
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Facebook" message:output delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
        [alert show];
    }];
}

- (void) performPublishAction:(void (^)(void)) action {
    if ([[FBSession activeSession]isOpen]) {
        /*
         * if the current session has no publish permission we need to reauthorize
         */
        if ([[[FBSession activeSession]permissions]indexOfObject:@"publish_actions"] == NSNotFound) {
            [[FBSession activeSession] reauthorizeWithPublishPermissions:[NSArray arrayWithObject:@"publish_actions"]
                                                         defaultAudience:FBSessionDefaultAudienceOnlyMe
                                                       completionHandler:^(FBSession *session, NSError *error) {
                                                           action();
                                                       }];
        }else{
            action();
        }
    }else{
        /*
         * open a new session with publish permission
         */
        [FBSession openActiveSessionWithPublishPermissions:[NSArray arrayWithObject:@"publish_actions"]
                                           defaultAudience:FBSessionDefaultAudienceOnlyMe
                                              allowLoginUI:YES
                                         completionHandler:^(FBSession *session, FBSessionState status, NSError *error) {
                                             if (!error && status == FBSessionStateOpen) {
                                                 action();
                                             }else{
                                                 NSLog(@"error");
                                             }
                                         }];
    }
}

来源：https://stackoverflow.com/questions/15467558/integrating-facebook-sdk-for-older-versions-of-xcode-to-support-both-ios-5-and-i