Can we invite people to use our app or send friend request from the app via Facebook in iOS 5?

Question

Consider X and Y are friends in Facebook and they both have installed an app in their respective phones. But they are not

Answer 1

Use Facebook-sdk 3.1

User-generated requests are initiated when the app enables the user to select one or more friends to send a request to.

We will walk you through the steps to send out an invite or a request:

• Triggering when the invitation or request is sent
• Sending the request
• Sending additional data with the request, such as a virtual gift

You can set up your app to prompt the user to send out an invite after the user has used the app a certain number of times. You should also give the user the ability to invite friends to use the app at any time through the use of a menu button they can always get to. In this step we will show you a simple way of triggering the invitation request.

See https://developers.facebook.com/docs/howtos/send-requests-using-ios-sdk/#protip2 for different types of coding logic.

See also:

1. How to send add friend request (to facebook user) from iOS application?
2. Can a facebook friend request be sent from my own app?

Answer 2

Make sure your facebook app id is same in both developer page and info in xcode next, enable sandbox mode,and must fill canvas url [under app on facebook category] in developer page.

NSString *facebookID = @"Your friend facebook id";
    NSMutableDictionary* params =
    [NSMutableDictionary dictionaryWithObject:facebookID forKey:@"to"];

    NSString *message = @"SOME_MESSAGE";
    NSString *title = @"TITLE";

    [FBWebDialogs presentRequestsDialogModallyWithSession:nil
                  message:message
                title:title
                parameters:params handler:^(FBWebDialogResult result, NSURL *resultURL, NSError *error) {
                        if (error)
                    {
                    // Case A: Error launching the dialog or sending request.
                        NSLog(@"Error sending request.");
                    }
                    else
                    {
                        if (result == FBWebDialogResultDialogNotCompleted)
                    {
                    // Case B: User clicked the "x" icon
                        NSLog(@"User canceled request.");
                    }
                    else
                    {
                        NSLog(@"Request Sent. %@", params);
                    }
        }}];