Which is uinavigationcontroller and back button action?

UINavigationController and back button action Ask Question Asked8 years, 5 months ago Active4 years, 6 months ago Viewed28k times 12 2 I have an two controllers1st is selfand 2nd is maincontroller, where I'm pushing maincontrollerin stack, so the back button is automatically coming.
In respect to this, how to detect back button press in uinavigationcontroller?
Or you can use the UINavigationController 's delegate methods. The method willShowViewController is called when the back button of your VC is pressed. Try putting this into the view controller where you want to detect the press:
Keeping this in consideration, how do I make a uinavigationbardelegate for the navigation bar? Create your own subclass of UINavigationController, make it implement the UINavigationBarDelegate (no need to manually set the navigation bar's delegate), add a UIViewController extension that defines a method to be called on a back button press, and then implement this method in your UINavigationController subclass:
Also Know, how to show the back button on the nav bar?
This is the preferred way because you set the backBarButtonItem only once in your view controller's navigation item, and then whatever view controller it will be pushing, the pushed controller will show the back button automatically on the nav bar.
Likewise, how does the navigation controller update the uibarbuttonitem?
Specifically, the navigation controller updates the bar button items displayed in each of the three navigation bar positions: left, middle, and right. Bar button items are instances of the UIBarButtonItem class.

13 Similar Question Found

How does the uinavigationcontroller work on an iphone?

The UINavigationController object creates, displays, and manages its associated navigation bar, and uses attributes of the view controllers you add to control the content displayed in the navigation bar. To control a navigation bar when using a navigation controller, the following steps are required:

What does the managing uinavigationcontroller object do?

The managing UINavigationController object uses the navigation items of the topmost two view controllers to populate the navigation bar with content. A navigation item always reflects information about its associated view controller. The navigation item must provide a title to display when the view controller is topmost on the navigation stack.

How to use a custom uinavigationcontroller subclass?

Use a custom UINavigationController subclass, which implements the shouldPop method. When set, your shouldPopHandler () will be called to decide whether the controller will be pop or not.

How to hide nav bar in uinavigationcontroller?

UINavigationController has a property navigationBarHidden, that allows you to hide/show navigation bar for whole nav controller. Each of three UIViewController will have nav bar since they are in UINavigationController. For example, you want to hide bar into the second (actually it doesn't matter in which one), then write into UIViewController2:

Which is the default view of the uinavigationcontroller?

With the default value of All, the Frame of the UINavigationController 's View includes the whole screen, extending beneath the toolbar at the bottom, the navigation bar, and even the status bar. The second image shows the Frame property when EdgesForExtendedLayout is set to None.

Is it possible to pop a uinavigationcontroller?

When navigating away from any pushed UIViewControllers, UINavigationControllers must pop the UIViewController. Though it is possible to present UIViewControllers both modally and via a push, UIViewControllers can only present other UIViewControllers.

Can a uinavigationcontroller be dismissed via a push?

Any UIViewController (including UINavigationControllers as UINavigationControllers are a type of UIViewControllers) presented modally must be dismissed. Since UINavigationControllers hold UIViewControllers in their stack, they can present UIViewControllers both modally and via a push.

What is the static property of uinavigationcontroller?

The UINavigationController class provides a static property, UINavigationControllers, which is a read-only list of UI navigation devices that are currently connected.

When to use uinavigationcontroller with push and pop blocks?

UINavigationController with Push and Pop Blocks When creating view controllers programmatically, one of the options is to use a UINavigationController as a container. This allows you to push and pop view controllers on the navigation stack. However, here are some common developer complaints:

How does the uinavigationcontroller set the preferredcontentsize?

Apparently, UINavigationController queues the animations for pushing on a new view controller and setting its own preferredContentSize based on the controller being pushed, so the push animation and the resize animation happen in series. Ideally, we'd like these animations to happen simultaneously.

How is the navigation bar hidden in uinavigationcontroller?

Allows the navigation bar to be hidden. A UINavigationItem that represents this UIViewController in its parent’s UINavigationController ’s NavigationBar. The NSBundle from which this UIViewController was instantiated. The name of the nib file from which this UIViewController was instantiated, or null.

Which is the parent of the uinavigationcontroller?

The UINavigationBar for the UINavigationController. Allows the navigation bar to be hidden. A UINavigationItem that represents this UIViewController in its parent’s UINavigationController ’s NavigationBar. The NSBundle from which this UIViewController was instantiated.

What do you call a uinavigationcontroller in swift?

You call the UINavigationController class pushViewController (_:animated:) method to add (or push) a view controller on to the navigation stack, and its popViewControllerAnimated (_:) method to remove (or pop) a view controller from the navigation stack.