UIViewController里添加多个UIViewController

// // MainViewViewController.h // ContainmentViewControllers // // Created by Jinhui Li on 7/3/14. // Copyright (c) 2014 Li Jinhui. All rights reserved. // #import <UIKit/UIKit.h> @interface MainViewViewController : UIViewController @property (weak, nonatomic) IBOutlet UIView *containerView; @property (strong, nonatomic) UIViewController *currentViewController; - (IBAction)onButtonClicked:(id)sender; @end