Question

I have the following method, which basically tries to get the user profile picture from facebook/twitter. The issue is that the result will be returned in a delegate, so therefore profilePicture results is obtained in the delegate called by these two methods. How do I deal with this?

- (NSString *) profilePicture
{
    NSString * result;
    if (facebook.isSessionValid){
        [facebook requestWithGraphPath:@"me/picture"
                             andParams:nil
                         andHttpMethod:@"GET"
                           andDelegate:self];
    } else if ([_twitter isAuthorized]){
        [_twitter getUserInformationFor:[_twitter username]];
    }
    return result;
}

Answer 1

You are setting the delegate to self. So you need to implement protocol methods that the facebook class specifies in this class.

In Facebook API, the protocol is named FBRequestDelegate and the method you need to implement is request:didLoad:

Example: taken from this page

- (void)request:(FBRequest *)request didLoad:(id)result {
    if ([result isKindOfClass:[NSArray class]]) {
        result = [result objectAtIndex:0];
    }
    NSLog(@"Result of API call: %@", result);
}