How can I change a specific nav bar item after init the view controller.

[jerrypainter]

Hello,

Like tinder, when user is on a page, I'd like to change the bar item to a UILabel (previously is a UIImage).

1. How can I change that specific bar item without re-init the view controller?

2.Where should i change the bar item, didChangePage block or pagingViewMovingRedefine block?

Thanks in advance.