How to remove navigation bar colour clear in swift4?

问题

I want to clear color of navigation bar. In my ViewController there is a background image on that, when i remove color of navigation barTintColor, navigationController.view.background and navigation background image then simulator shows me :-

I have been trying alots of codes but there is no solution found. I want navigation Bar like that:-

with clear navigation bar color. Is there any solution, let me know? Thanks!

回答1:

You can make the navigation bar transparent in viewWillAppear and remove transparency in viewWillDisappear as follows

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
    self.navigationController?.navigationBar.shadowImage = UIImage()
    self.navigationController?.navigationBar.isTranslucent = true
}
override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    self.navigationController?.navigationBar.setBackgroundImage(nil, for: .default)
    self.navigationController?.navigationBar.shadowImage = nil
    self.navigationController?.navigationBar.isTranslucent = false
}

The background image and the back button will be visible

回答2:

Better you must avoid the navigation bar. Hide the navigation bar in the navigation controller and user custom view in your view controller to avoid this issue.

来源：https://stackoverflow.com/questions/55627473/how-to-remove-navigation-bar-colour-clear-in-swift4