UINavigationBar set custom shadow in AppDelegate.swift

Question

I want to set some shadow to the bottom of my UINavigationBar for the whole application. Here is what I\'ve tried but it doesn\'t work:

func application(appl         


        

Answer 1

A better solution by still using appearance and that does not require you to subclass the UINavigationBar and adding code to each navigation controller, would be:

Extend the UINavigationBar

extension UINavigationBar {

  var castShadow : String {
    get { return "anything fake" }
    set {
        self.layer.shadowOffset = CGSizeMake(0, 3)
        self.layer.shadowRadius = 3.0
        self.layer.shadowColor = UIColor.yellowColor().CGColor
        self.layer.shadowOpacity = 0.7

    }
  }

}

And add an app wide appearance rule (inside appdelegate "didFinishLaunchingWithOptions" for example)

UINavigationBar.appearance().castShadow = ""