Facebook Share Dialog in iOS

Question

I am trying to implement the native Share dialog from Facebook in a sample application.

Seem to have some problem in doing so.

Things I have done so far:

Answer 1

Do you have Facebook App installed on your device? The Share dialog only works if you have the Facebook app installed.

From the Share dialog documentation :

Tip 1: What if people don't have the Facebook app installed?

The Share dialog can't be displayed if people don't have the Facebook app installed. Apps can detect this by calling [FBDialogs canPresentShareDialogWithParams:nil]; and may disable or hide a sharing button or fall back to the Feed dialog to share on the web. See the HelloFacebookSample included with the iOS SDK for an example.

From what I saw, iOS 6 will return NO for + canPresentShareDialogWithParams:. It only responds to + canPresentOSIntegratedShareDialogWithSession:. But I could be wrong here.

Anyways, this is how I do it - 1. For sharing links :

if ([FBDialogs canPresentShareDialogWithParams:nil]) {

    NSURL* url = [NSURL URLWithString:link.url];
    [FBDialogs presentShareDialogWithLink:url
                              handler:^(FBAppCall *call, NSDictionary *results, NSError *error) {
                 if(error) {
                       NSLog(@"Error: %@", error.description);
                 } else {
                       NSLog(@"Success");
                 }
     }];
}

2.For OpenGraph calls :

id pictureObject =
    [FBGraphObject openGraphObjectForPostWithType:@"your_namespace:picture"
                                            title:image.title
                                            image:image.thumbnailUrl
                                              url:image.url
                                      description:@""];

    id action = (id)[FBGraphObject graphObject];
    [action setObject:pictureObject forKey:@"picture"];

    [FBDialogs presentShareDialogWithOpenGraphAction:action
                                          actionType:@"your_namespace:action_name"
                                 previewPropertyName:@"picture"
                                             handler:^(FBAppCall *call, NSDictionary *results, NSError *error) {
                                                 if(error) {
                                                     NSLog(@"Error: %@", error.description);
                                                 } else {
                                                     NSLog(@"Success");
                                                 }
                                             }];

Check out other ways to share on iOS here

Hope this helps.