I am trying to get pageviewcontroller current index value and name based on that I will make one alert with view controller name also. i don't know how to get that one. 
-(UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController
- (UIViewController *)viewControllerAtIndex:(NSUInteger)index
 
    