XLPagerTabStrip is a Container View Controller that allows us to switch easily among a collection of view controllers. Pan gesture can be used to move on to next or previous view controller. It shows a interactive indicator of the current, previous, next child view controllers. The library provides 4 different ways to show the view controllers. This is likely the most common pager type. It's used by many well-known apps such as instagram, youtube, skype, and many others. The bar mode doesn't...