ESTabBarController is a highly customizable TabBarController component, which is inherited from UITabBarController. In real-world development, we may encounter the situation of customizing the UITabBar. For instance: change font style, add animation, and use bigger items. However, it's hard to do with UITabBarItem. You can download and build the ESTabBarControllerExample project, and you will find more examples to use ESTabBarController, and also more examples to customize UITabBar,