iOS11 backBarButtonItem已禁用

Question

Before iOS11 , I use the runtime replaced the backBarButtonItem implementation change the default back button style, effects as follows, but on the iOS11 is invalid.

I found that the structure of the back button below before iOS11

But The structure of the back button on the iOS11 below

How can I get on iOS11 before implementation effect, which means backBarButtonItem without words?

Answer 1

Try this:

self.navigationController?.navigationBar.topItem?.title = ""

wrire this code in viewDidLoad().

Its affected in NextViewController.

Answer 2

If you want only backButton without the words, try going through following steps:

1. Embed your second ViewController to NavigationController too.
2. Drag and Drop a UIBarButton icon to the NavigationBar of Second ViewController.
3. Add the backbutton image to the UIBarButton.

It's Done!!

Hope it will help you.