How to reload Navigation bar

Question

In UITableView I configure self.navigationItem.leftBarButtonItem with a button. Now I want to reload this button to update text on this button, but it's on Navigation bar. I can update UITableView by

 [self.tableView reloadData]

but How to update Navigation bar?

Update: I'm NOT init the title of button, but reload it. So any init code (such as self.navigationItem.leftBarButtonItem.title = @"balabala") doesn't work, because it does NOT take effect immediately.

Answer 1

Just change the text on the leftBarButtonItem?

self.navigationItem.leftBarButtonItem.title = @"Back"; // or whatever text you want

Answer 2

Try this

UIBarButtonItem *btnBack = [[UIBarButtonItem alloc]
                               initWithTitle:@"Title" 
                               style:UIBarButtonItemStyleBordered
                               target:self
                               action:@selector(OnClick:)];
self.navigationItem.leftBarButtonItem = btnBack;

Hope this helps you..

EDIT :-

UIBarButtonItem *btnBack = [[UIBarButtonItem alloc] initWithTitle: @"Title" style: UIBarButtonItemStyleBordered target:self action:@selector(OnClick:)];

[[self navigationItem] setBackBarButtonItem: btnBack];