I would like to use the same functionality of addChildViewController, but for the version 4.3 (addChildViewController is only available in version 5). Thanks in advance.
Something similar is explained in iOS: different addSubview behavior between iOS 4.3 and 5.0.
I have solved it by adding these lines:
NSMutableArray *controladores=[[NSMutableArray alloc]init];
[controladores addObject:myController];
if ([[[UIDevice currentDevice] systemVersion] compare:@"5.0"] == NSOrderedAscending) {
[tabBar setViewControllers:controladores animated:YES];
}