How to set the title of a Navigation Bar programmatically?

问题

I have a Navigation Bar in a view, and I want to change its Navigation Item title programmatically.

How is this done?

回答1:

In your UIViewController

self.navigationItem.title = @"The title";

回答2:

Swift 3 Version:

If you use a navigation bar without navigation controller, then you can try this:

navigationBar.topItem?.title = "Your Title"

Hope for help.

回答3:

In viewDidLoad

  self.title = @"Title";

回答4:

From Apple Documentation:

The most common way to use a navigation bar is with a navigation controller. You can also use a navigation bar as a standalone object in your app.

So If you have a UINavigationController, all what you have to do to set the title of the navigation bar (as explained in all previous answers)

self.navigationItem.title = @"title";

But If you have a standalone navigation bar that is created programmatically within an object of UIViewController, You have to set the initial appearance of the navigation bar by creating the appropriate UINavigationItem objects and adding them to the navigation bar object stack i.e.

Create an instance of navigation bar (UINavigationBar)
Create an instance of navigation bar item (UINavigationItem) that manages the buttons and views to be displayed in a UINavigationBar object. Note that you set the title at this step.
(Optional Step) Add right/left buttons (instances of UIBarButtonItem) to the navigation bar item.

Sample of Objective-C Code for the mentioned steps:

UINavigationBar* navbar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 64)];

/* Create navigation item object & set the title of navigation bar. */
UINavigationItem* navItem = [[UINavigationItem alloc] initWithTitle:self.shoppingItem.name];

/* Create left button item. */
UIBarButtonItem* cancelBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(onTapCancel:)];
navItem.leftBarButtonItem = cancelBtn;

/* Create left button item. */
UIBarButtonItem* doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(onTapDone:)];
navItem.rightBarButtonItem = doneBtn;

/* Assign the navigation item to the navigation bar.*/
[navbar setItems:@[navItem]];

/* add navigation bar to the root view.*/
[self.view addSubview:navbar];

For Swift version of the standalone navigation bar, check out this answer.

回答5:

Write the below code in viewDidLoad or may be better would be under initWithNibName:

  self.navigationItem.title = @"title";

Thanks.

回答6:

You can also use 👇🏻

[self.navigationController.navigationBar.topItem setTitle:@"Titlet"];

回答7:

This code did not work for me

self.navigationItem.title = @"Title here";

But this worked.

self.title = "Title Name"

回答8:

In your UIViewController's viewDidLoad

self.navigationItem.title = "The title";//In swift 4

will do the trick

you can also put the above statement in the app delegate to replicate globally.

回答9:

Use it in ViewDidLoad method

Format :

@property(nonatomic,readonly,retain) UINavigationItem *navigationItem; // Created on-demand so that a view controller may customize its navigation appearance.

Example :

self.navigationItem.title = @"Title here";

回答10:

very important note : make sure you make the changes that mentioned above in parent view Controller's viewDidLoad method, or parents navigation bar in storyboard

回答11:

Sometimes you might get a case where you are updating the title and it is not causing any effect, this can be when you have a custom view on the topItem therefore you might want to update it like this: (self.navigationController?.navigationBar.topItem?.titleView as? UILabel)?.text = "My Happy New Title"

来源：https://stackoverflow.com/questions/6154237/how-to-set-the-title-of-a-navigation-bar-programmatically

标签

ios

iphone

view

uinavigationbar