back button color react navigation code example

Example 1: remove back button text nav bar swift

navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .plain, target: nil, action: nil)

Example 2: show back button in navbar swift

let backButton = UIBarButtonItem()
 backButton.title = "New Back Button Text"
 self.navigationController?.navigationBar.topItem?.backBarButtonItem = backButton