Post multiple images using SLComposeViewController on Facebook/ Twitter?

Question

I am an iOS developer and I am currently using SLComposeViewController to share a post on Facebook/Twitter. My issue is that I have to post multiple images in a single post.

I have done this as follows:

SLComposeViewController* mySLComposerSheet = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeTwitter];
[mySLComposerSheet setInitialText:textTobeShared];
mySLComposerSheet addURL:[NSURL URLWithString:@"http://click-labs.com/"]];
for(int count=0;count<imageArray.count;count++)
        if([mySLComposerSheet addImage:[UIImage imageWithData:[imageArray objectAtIndex:count]]]) 

In the above code, imageArray is the array of images that I want to post.

When I am doing this on Facebook, all the images are posted as a separate post.

While in case of Twitter, addImage method returns true only for the first images while in case of other images it returns false. So only one image is posted.

So I want to know how to achieve my goal and is it possible to post multiple images in a single tweet.

Answer 1

I think you need to create an album first.

Here's a link to the facebook album API documentation.

- (void)shareToFacebook {
if (FBSession.activeSession.isOpen) {
    NSLog(@"SESSION IS OPEN");

    [self createFacebookAlbum];
} else {
    NSLog(@"SESSION IS NOT OPEN");
    NSArray* permissions = [NSArray arrayWithObject:@"email"];
    [FBSession openActiveSessionWithReadPermissions:permissions allowLoginUI:YES completionHandler:^(FBSession *session, FBSessionState state, NSError *error) {
        [self sessionStateChanged:session state:state error:error];

        if (error) {
            /* handle failure */
            NSLog(@"error:%@, %@", error, [error localizedDescription]);
            UIAlertView* alert = [[UIAlertView alloc] initWithTitle:@"Error" message:@"There was a problem with your Facebook permissions." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles: nil];
            [alert show];
        }
        else if (state == FBSessionStateClosed || state == FBSessionStateClosedLoginFailed ) {
            [FBSession.activeSession closeAndClearTokenInformation];
        }
        else if (state == FBSessionStateOpenTokenExtended || state == FBSessionStateOpen) {
            if(!self.presentedFacebookSheet) {
                [self performSelector:@selector(reauthorizeAndContinuePostToFacebook) withObject:nil afterDelay:0.5];
                self.presentedFacebookSheet = YES;
            }
        }
        }];
    }
}

- (void)reauthorizeAndContinuePostToFacebook {
    NSArray *permissions = [NSArray arrayWithObjects:@"publish_actions", nil];

    [[FBSession activeSession] requestNewPublishPermissions:permissions defaultAudience:FBSessionDefaultAudienceFriends completionHandler:^(FBSession *session, NSError *error) {
        [self shareToFacebook];
    }];
}

- (void)createFacebookAlbum {
    NSMutableDictionary* parameters = [NSMutableDictionary dictionary];
    [parameters setObject:@"Test name" forKey:@"name"];
    [parameters setObject:@"Test message" forKey:@"message"];

    FBRequest* request = [FBRequest requestWithGraphPath:@"me/albums" parameters:parameters HTTPMethod:@"POST"];

    NSLog(@"creating facebook album");
    FBRequestConnection *connection = [[FBRequestConnection alloc] init];
    [connection addRequest:request
         completionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
             if (!error) {
                 NSString* albumId = [result objectForKey:@"id"];
                 NSLog(@"OK %@", albumId);
             }
             else {
                 NSLog(@"Error: %@",error.userInfo);
             }
         }];
    [connection start];
}

- (void)sessionStateChanged:(FBSession *)session state:(FBSessionState) state error:(NSError *)error {
    switch (state) {
        case FBSessionStateOpen:
        {
            [[FBRequest requestForMe] startWithCompletionHandler:
             ^(FBRequestConnection *connection,
               NSDictionary<FBGraphUser> *user,
               NSError *error) {
                 if (error) {
                     //error
                 }
                 else {
                     NSLog(@"User session found");
                 }
             }];
        }
            break;
        case FBSessionStateClosed:
        case FBSessionStateClosedLoginFailed:
            [FBSession.activeSession closeAndClearTokenInformation];
            break;
        default:
            break;
    }
}