UINavigationController changeViewController:animated

gistfile1.txt

@interface UINavigationController (Extras)
- (void)changeViewController:(UIViewController *)viewController animated:(BOOL)animated;
@end


@implementation UINavigationController (Extras)

- (void)changeViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    if ([self.childViewControllers containsObject:viewController]) {
        [self popToViewController:viewController animated:animated];
    }else{
        [self pushViewController:viewController animated:animated];
    }
}