[ios] How do I change the title of the "back" button on a Navigation Bar

Here's another way to do it.

In your parent view controller, implement the following method:

- (void) setBackBarButtonItemTitle:(NSString *)newTitle {
  self.navigationItem.backBarButtonItem.title = newTitle;
}

In your child view controller, when you want to change the title, this will work:

NSArray *viewControllerArray = [self.navigationController viewControllers];
int parentViewControllerIndex = [viewControllerArray count] - 2;
[[viewControllerArray objectAtIndex:parentViewControllerIndex] setBackBarButtonItemTitle:@"New Title"];

I was never able to get the parentViewController property to work:

[(ParentViewController *)(self.navigationController.parentViewController) setBackBarButtonItemTitle:@"New Title"];

I don't know if that's a bug or I'm not using it properly. But grabbing the second-to-last view controller in the viewControllers array points to the parent view controller, and I can call parent methods correctly with that reference.

Examples related to ios

Adding a UISegmentedControl to UITableView Crop image to specified size and picture location Undefined Symbols error when integrating Apptentive iOS SDK via Cocoapods Keep placeholder text in UITextField on input in IOS Accessing AppDelegate from framework? Autoresize View When SubViews are Added Warp \ bend effect on a UIView? Speech input for visually impaired users without the need to tap the screen make UITableViewCell selectable only while editing Xcode 12, building for iOS Simulator, but linking in object file built for iOS, for architecture arm64

Examples related to objective-c

Adding a UISegmentedControl to UITableView Keep placeholder text in UITextField on input in IOS Accessing AppDelegate from framework? Warp \ bend effect on a UIView? Use NSInteger as array index Detect if the device is iPhone X Linker Command failed with exit code 1 (use -v to see invocation), Xcode 8, Swift 3 ITSAppUsesNonExemptEncryption export compliance while internal testing? How to enable back/left swipe gesture in UINavigationController after setting leftBarButtonItem? Change status bar text color to light in iOS 9 with Objective-C

Examples related to uinavigationbar

Swift programmatically navigate to another view controller/scene How to enable back/left swipe gesture in UINavigationController after setting leftBarButtonItem? How to hide a navigation bar from first ViewController in Swift? Change color of Back button in navigation bar NavigationBar bar, tint, and title text color in iOS 8 transparent navigation bar ios presenting ViewController with NavigationViewController swift Changing navigation title programmatically Navigation bar with UIImage for title Changing navigation bar color in Swift

Examples related to uinavigationitem

How to enable back/left swipe gesture in UINavigationController after setting leftBarButtonItem? Removing the title text of an iOS UIBarButtonItem back button callback in navigationController in iOS iPhone: Setting Navigation Bar Title How do I change the title of the "back" button on a Navigation Bar