vkt0r/customnavigationbar

An UINavigationBar extension which allows you to change its appearance dynamically in Swift

CustomNavigationBar

An UINavigationBar extension which allows you to change its appearance dynamically in Swift.

Getting Started

There's this very interesting library called LTNavigationBar by Leo which has become very popular amongst iOS developers, but it has written in Objective-C.

I've chosen to write it in Swift as it can be highly optimized by the compiler. The two demo projects are written in Swift to demonstrate how it works.

Purpose

The main purpose of this library is change the appearance of an UINavigationBar dynamically 😅

Examples

1. Changing the background color:

2. Making navigation bar scroll along with a scroll view:

Usage

The extension includes four methods that helps to change UINavigationBar appearance dynamically:

func _setBackgroundColor(color: UIColor)
func setTranslationY(translation: CGFloat)
func setAlphaElements(alpha: CGFloat)
func reset() 

It's recommended that in the viewWillDisappear, you should call this method to avoid any side effects:

override func viewWillDisappear(animated: Bool) {
   super.viewWillDisappear(animated)
   self.navigationController?.navigationBar.reset()
}

You can see the two demo projects for a better knowledge.