如何与facebook ios sdk交朋友请求？

Question

i'm using the facebook iOS sdk. I need to send friend requests between users of facebook, from an iOS app. I know that can not be sent via graph API. I'm trying to through dialog of facebook i do not know how. Can anyone help me?

This is my code:

Facebook *face = [[Facebook alloc] initWithAppId:@"APP_ID" andDelegate:self];
NSMutableDictionary* params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                               @"user_id",  @"id",
                               nil];

[face dialog:@"me/friends"
        andParams:params
      andDelegate:self];

With this code i get a dialog with this text: "The page you requested was not found"

Answer 1

Ok I found a solution. I have created a NSMutableDictionary to make a "appRequest" with their corresponding parameters but finally indicated that the type of dialogue is a "friends". It's a strange solution but it works.

Facebook *face = [[Facebook alloc] initWithAppId:FBSession.activeSession.appID andDelegate:nil];
face.accessToken = FBSession.activeSession.accessToken;
face.expirationDate = FBSession.activeSession.expirationDate;
if ([face isSessionValid]){
    NSMutableDictionary* params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                   @"My Title", @"title",
                                   @"Come check out my app.",  @"message",
                                   userId, @"id",
                                   nil];
    [face dialog:@"friends"
       andParams:[params mutableCopy]
     andDelegate:nil];
}

Answer 2

This may help you

 NSDictionary* params = [NSDictionary dictionaryWithObjectsAndKeys: message, @"message", title, @"title", nil];
 [[self facebook] dialog: @"apprequests"
                      andParams: [params mutableCopy]
                    andDelegate: delegate];

See this question for further details and also this document.