iOS Development: Moving a TabBar to the Bottom of a Screen Regardless of Size

-(void)viewDidLayoutSubviews

{

    

    UIScreen* screen = [[UIScreen screens] objectAtIndex:0];

    

    CGRect screenBounds = screen.bounds;

    

    self.tabBar.frame = CGRectMake(0,  screenBounds.size.height - self.tabBar.frame.size.height, self.tabBar.frame.size.width, self.tabBar.frame.size.height);

    

    [self.view addSubview:tabBar];

    

}