How to remove all navigationbar back button title

Question

When I push a UIViewController, it has some title in back button at new UIViewController, if the title has a lot of text, It does not look good in

Answer 1

Adding a second answer here as my first only partially works. This method is less elegant in the fact that it requires calling a method in each view in the application, however it works without any side-effects.

So firstly, create a UIViewController extension class with a function to remove back button text and add a custom back button:

extension UIViewController {

func setBackButton() {
    navigationController?.navigationBar.backIndicatorImage = R.image.backArrow()
    navigationController?.navigationBar.backIndicatorTransitionMaskImage = R.image.backArrow()
    navigationItem.backBarButtonItem = UIBarButtonItem(title: " ", style: .plain, target: nil, action: nil)
}

Secondly, we can simply call out to this function in the viewDidLoad of each view controller you need it in.