set title of back bar button item in ios

问题:

I am using storyboards in my application, and if I set the title property of a ViewController class, that string will appear as the text of my back button when I push a SecondViewController, how can I change this?, I want to put a different title for the back button.

I have used this but it doesn't work:

UIBarButtonItem *btnBack = [[UIBarButtonItem alloc]                                    initWithTitle:@"Back"                                     style:UIBarButtonItemStyleBordered                                    target:self                                    action:nil];     [self.navigationItem setBackBarButtonItem: btnBack]; 

please help me

回答1:

Try this ,

Objective-C:

UIBarButtonItem *btnBack = [[UIBarButtonItem alloc]                             initWithTitle:@"Done"                             style:UIBarButtonItemStyleBordered                             target:self                             action:nil]; self.navigationController.navigationBar.topItem.backBarButtonItem=btnBack; 

Swift:

var btn = UIBarButtonItem(title: "Done", style: .Plain, target: self, action: "backBtnClicked")  self.navigationController?.navigationBar.topItem?.backBarButtonItem=btn 

回答2:

When you use Storyboards you can change the text of the left bar button item aka the back button with no code. You will obviously need a UINavigationController within your Storyboard so you have the ability to push and pop views.

1. Select the Navigation item object for the source view controller
2. Enter text into the Back Button option in the inspector view on the right.

Then when a view is pushed from this view it will use this title set.

回答3:

Set a backBarButtonItem to the navigationItem of the previous viewController. Setting the topItem only works on the first time viewWillAppear. Please check this post for detail: iOS Set Navigation Bar Back Button Title

NSArray *viewControllerArray = [self.navigationController viewControllers]; // get index of the previous ViewContoller long previousIndex = [viewControllerArray indexOfObject:self] - 1; if (previousIndex >= 0) {     UIViewController *previous = [viewControllerArray objectAtIndex:previousIndex];     previous.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc]                                                      initWithTitle:backButtonTitle                                                      style:UIBarButtonItemStylePlain                                                      target:self                                                      action:nil]; } 

回答4:

Try changing the title of the first view controller where you push the second view controller, and set the tittle to the old one when u pop.

回答5:

Try this:

    UIBarButtonItem *btnBack = [[UIBarButtonItem alloc]                                        initWithTitle:@"Back"                                         style:UIBarButtonItemStyleBordered                                        target:self                                        action:@selector(backButtonClicked:)];         [self.navigationItem setLeftBarButtonItem: btnBack];      -(void)backButtonClicked:(UIBarButtonItem*)sender      {         //do ur stuff      } 

文章来源: set title of back bar button item in ios