YourCustomViewController.h

//import the socialize header
#import <Socialize/Socialize.h>

@interface YourCustomViewController : UIViewController
@property (nonatomic, retain) SocializeActionBar *actionBar;
@end

YourCustomViewController.m

- (void)viewDidLoad
{
    [super viewDidLoad];

    self.actionBar = [SocializeActionBar actionBarWithUrl:@"http://www.example.com/object/1234" presentModalInController:self];
    [self.view addSubview:self.actionBar.view];
}