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 methods
`static final @NonNull View.OnClickListener`	`createNavigateOnClickListener(@IdRes int resId, @Nullable Bundle args)` Create an `android.view.View.OnClickListener` for navigating to a destination.
`static final @NonNull View.OnClickListener`	`createNavigateOnClickListener(@NonNull NavDirections directions)` Create an `android.view.View.OnClickListener` for navigating to a destination via a generated `NavDirections`.
`static final @NonNull NavController`	`findNavController(@NonNull Activity activity, @IdRes int viewId)` Find a `NavController` given the id of a View and its containing `Activity`.
`static final @NonNull NavController`	`findNavController(@NonNull View view)` Find a `NavController` given a local `View`.
`static final void`	`setViewNavController( @NonNull View view, @Nullable NavController controller )` 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 methods

createNavigateOnClickListener

@NonNull
public static final View.OnClickListener createNavigateOnClickListener(@IdRes int resId, @Nullable Bundle args)

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
`@IdRes int resId`	an `action` id or a destination id to navigate to when the view is clicked
`@Nullable Bundle args`	arguments to pass to the final destination

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

@NonNull
public static final View.OnClickListener createNavigateOnClickListener(@NonNull NavDirections directions)

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

Parameters
`@NonNull NavDirections directions`	directions that describe this navigation operation

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

findNavController

@NonNull
public static final NavController findNavController(@NonNull Activity activity, @IdRes int viewId)

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
`@NonNull Activity activity`	The Activity hosting the view
`@IdRes int viewId`	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

@NonNull
public static final NavController findNavController(@NonNull View view)

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
`@NonNull 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.

@NonNull
public static final void setViewNavController(
    @NonNull View view,
    @Nullable NavController controller
)

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
`@NonNull View view`	View that should be associated with the given NavController
`@Nullable NavController controller`	The controller you wish to later retrieve via `findNavController`