A drop-in universal library helps you to manage the navigation bar styles and makes transition animations smooth between different navigation bar styles while pushing or popping a view controller for all orientations. And you don't need to write any line of code for it, it all happens automatically.

A library that helps to manage the navigation bar style. It helps to remember bar attributes between different VCs and keep the transition smooth.

一个用来统一管理导航栏转场以及当 push 或者 pop 的时候使动画效果更加顺滑的通用库，并且同时支持竖屏和横屏。能应对复杂的场景变化，又兼顾原生NavigationBar的使用习惯 https://juejin.im/post/5e8d8db36fb9a03c5d5c7f27

bring UINavigationBar to UIViewController.

Custom NavigationBar Demo