Setting a Custom Image for a Back Button on UINavigationBar

Question

I am trying to set a custom image for the back button that automatically gets place onto a navigation bar when a new view is pushed onto the stack.

I have tried add

Answer 1

This worked for me:

let button1 = UIBarButtonItem(
    image: #imageLiteral(resourceName: "back_arrow"), 
    style: .plain, 
    target: self, 
    action: #selector(self.backBtnTapped(_:))
)
self.navigationItem.leftBarButtonItem  = button1