Navigation | Android Developers

Kotlin |Java

object Navigation

Entry point for navigation operations.

This class provides utilities for finding a relevant NavController instance from various common places in your application, or for performing navigation in response to UI events.

Summary

Public functions
`const View.OnClickListener`	`createNavigateOnClickListener(resId: @IdRes Int!, args: Bundle?)` Create an `android.view.View.OnClickListener` for navigating to a destination.
`const View.OnClickListener`	`createNavigateOnClickListener(directions: NavDirections!)` Create an `android.view.View.OnClickListener` for navigating to a destination via a generated `NavDirections`.
`const NavController`	`findNavController(activity: Activity!, viewId: @IdRes Int!)` Find a `NavController` given the id of a View and its containing `Activity`.
`const NavController`	`findNavController(view: View!)` Find a `NavController` given a local `View`.
`const Unit`	`setViewNavController(view: View!, controller: NavController?)` Associates a NavController with the given View, allowing developers to use `findNavController` and `findNavController` with that View or any of its children to retrieve the NavController.

Public functions

createNavigateOnClickListener

const fun createNavigateOnClickListener(resId: @IdRes Int!, args: Bundle? = null): View.OnClickListener

Create an android.view.View.OnClickListener for navigating to a destination. This supports both navigating via an action and directly navigating to a destination.

Parameters
`resId: @IdRes Int!`	an `action` id or a destination id to navigate to when the view is clicked
`args: Bundle? = null`	arguments to pass to the final destination

Returns
`View.OnClickListener`	a new click listener for setting on an arbitrary view

const fun createNavigateOnClickListener(directions: NavDirections!): View.OnClickListener

Create an android.view.View.OnClickListener for navigating to a destination via a generated NavDirections.

Parameters
`directions: NavDirections!`	directions that describe this navigation operation

Returns
`View.OnClickListener`	a new click listener for setting on an arbitrary view

findNavController

const fun findNavController(activity: Activity!, viewId: @IdRes Int!): NavController

Find a NavController given the id of a View and its containing Activity. This is a convenience wrapper around findNavController.

This method will locate the NavController associated with this view. This is automatically populated for the id of a NavHost and its children.

Parameters
`activity: Activity!`	The Activity hosting the view
`viewId: @IdRes Int!`	The id of the view to search from

Returns
`NavController`	the `NavController` associated with the view referenced by id

Throws
`kotlin.IllegalStateException`	if the given viewId does not correspond with a `NavHost` or is not within a NavHost.

findNavController

const fun findNavController(view: View!): NavController

Find a NavController given a local View.

This method will locate the NavController associated with this view. This is automatically populated for views that are managed by a NavHost and is intended for use by various listener interfaces.

Parameters
`view: View!`	the view to search from

Returns
`NavController`	the locally scoped `NavController` to the given view

Throws
`kotlin.IllegalStateException`	if the given view does not correspond with a `NavHost` or is not within a NavHost.

const fun setViewNavController(view: View!, controller: NavController?): Unit

Associates a NavController with the given View, allowing developers to use findNavController and findNavController with that View or any of its children to retrieve the NavController.

This is generally called for you by the hosting NavHost.

Parameters
`view: View!`	View that should be associated with the given NavController
`controller: NavController?`	The controller you wish to later retrieve via `findNavController`