NavigationUI

Kotlin |Java

object NavigationUI

Class which hooks up elements typically in the 'chrome' of your application such as global navigation patterns like a navigation drawer or bottom nav bar with your NavController.

Summary

Public functions
`const Boolean`	`navigateUp(navController: NavController, openableLayout: Openable?)` Handles the Up button by delegating its behavior to the given NavController.
`const Boolean`	`navigateUp( navController: NavController, configuration: AppBarConfiguration )` Handles the Up button by delegating its behavior to the given NavController.
`const Boolean`	`onNavDestinationSelected(item: MenuItem, navController: NavController)` Attempt to navigate to the `NavDestination` associated with the given MenuItem.
`const @NavigationUiSaveStateControl Boolean`	`onNavDestinationSelected( item: MenuItem, navController: NavController, saveState: Boolean )` Attempt to navigate to the `NavDestination` associated with the given MenuItem.
`const Unit`	`setupActionBarWithNavController( activity: AppCompatActivity, navController: NavController, openableLayout: Openable? )` Sets up the ActionBar returned by `AppCompatActivity.getSupportActionBar` for use with a `NavController`.
`const Unit`	`setupActionBarWithNavController( activity: AppCompatActivity, navController: NavController, configuration: AppBarConfiguration )` Sets up the ActionBar returned by `AppCompatActivity.getSupportActionBar` for use with a `NavController`.
`const Unit`	`setupWithNavController( toolbar: Toolbar, navController: NavController, openableLayout: Openable? )` Sets up a `Toolbar` for use with a `NavController`.
`const Unit`	`setupWithNavController( toolbar: Toolbar, navController: NavController, configuration: AppBarConfiguration )` Sets up a `Toolbar` for use with a `NavController`.
`const Unit`	`setupWithNavController( collapsingToolbarLayout: CollapsingToolbarLayout, toolbar: Toolbar, navController: NavController, openableLayout: Openable? )` Sets up a `CollapsingToolbarLayout` and `Toolbar` for use with a `NavController`.
`const Unit`	`setupWithNavController( collapsingToolbarLayout: CollapsingToolbarLayout, toolbar: Toolbar, navController: NavController, configuration: AppBarConfiguration )` Sets up a `CollapsingToolbarLayout` and `Toolbar` for use with a `NavController`.
`const Unit`	`setupWithNavController( navigationView: NavigationView, navController: NavController )` Sets up a `NavigationView` for use with a `NavController`.
`const @NavigationUiSaveStateControl Unit`	`setupWithNavController( navigationView: NavigationView, navController: NavController, saveState: Boolean )` Sets up a `NavigationView` for use with a `NavController`.
`const Unit`	`setupWithNavController( navigationBarView: NavigationBarView, navController: NavController )` Sets up a `NavigationBarView` for use with a `NavController`.
`const @NavigationUiSaveStateControl Unit`	`setupWithNavController( navigationBarView: NavigationBarView, navController: NavController, saveState: Boolean )` Sets up a `NavigationBarView` for use with a `NavController`.

Public functions

const fun navigateUp(navController: NavController, openableLayout: Openable?): Boolean

Handles the Up button by delegating its behavior to the given NavController. This should generally be called from AppCompatActivity.onSupportNavigateUp.

If you do not have a Openable layout, you should call NavController.navigateUp directly.

Parameters
`navController: NavController`	The NavController that hosts your content.
`openableLayout: Openable?`	The Openable layout that should be opened if you are on the topmost level of the app.

Returns
`Boolean`	True if the `NavController` was able to navigate up.

const fun navigateUp(
    navController: NavController,
    configuration: AppBarConfiguration
): Boolean

Handles the Up button by delegating its behavior to the given NavController. This is an alternative to using NavController.navigateUp directly when the given AppBarConfiguration needs to be considered when determining what should happen when the Up button is pressed.

In cases where no Up action is available, the AppBarConfiguration.fallbackOnNavigateUpListener will be called to provide additional control.

Parameters
`navController: NavController`	The NavController that hosts your content.
`configuration: AppBarConfiguration`	Additional configuration options for determining what should happen when the Up button is pressed.

Returns
`Boolean`	True if the `NavController` was able to navigate up.

const fun onNavDestinationSelected(item: MenuItem, navController: NavController): Boolean

Attempt to navigate to the NavDestination associated with the given MenuItem. This MenuItem should have been added via one of the helper methods in this class.

Importantly, it assumes the menu item id matches a valid action id or destination id to be navigated to.

By default, the back stack will be popped back to the navigation graph's start destination. Menu items that have android:menuCategory="secondary" will not pop the back stack.

Parameters
`item: MenuItem`	The selected MenuItem.
`navController: NavController`	The NavController that hosts the destination.

Returns
`Boolean`	True if the `NavController` was able to navigate to the destination associated with the given MenuItem.

@NavigationUiSaveStateControl
const fun onNavDestinationSelected(
    item: MenuItem,
    navController: NavController,
    saveState: Boolean
): Boolean

Attempt to navigate to the NavDestination associated with the given MenuItem. This MenuItem should have been added via one of the helper methods in this class.

Importantly, it assumes the menu item id matches a valid action id or destination id to be navigated to.

By default, the back stack will be popped back to the navigation graph's start destination. Menu items that have android:menuCategory="secondary" will not pop the back stack.

Parameters
`item: MenuItem`	The selected MenuItem.
`navController: NavController`	The NavController that hosts the destination.
`saveState: Boolean`	Whether the NavController should save the back stack state. This must always be `false`: leave this parameter off entirely to use the non-experimental version of this API, which saves the state by default.

Returns
`Boolean`	True if the `NavController` was able to navigate to the destination associated with the given MenuItem.

const fun setupActionBarWithNavController(
    activity: AppCompatActivity,
    navController: NavController,
    openableLayout: Openable?
): Unit

Sets up the ActionBar returned by AppCompatActivity.getSupportActionBar for use with a NavController.

By calling this method, the title in the action bar will automatically be updated when the destination changes (assuming there is a valid label).

The start destination of your navigation graph is considered the only top level destination. On the start destination of your navigation graph, the ActionBar will show the drawer icon if the given Openable layout is non null. On all other destinations, the ActionBar will show the Up button. Call navigateUp to handle the Up button.

Destinations that implement androidx.navigation.FloatingWindow will be ignored.

Parameters
`activity: AppCompatActivity`	The activity hosting the action bar that should be kept in sync with changes to the NavController.
`navController: NavController`	The NavController whose navigation actions will be reflected in the title of the action bar.
`openableLayout: Openable?`	The Openable layout that should be toggled from the home button

See also
`setupActionBarWithNavController`

const fun setupActionBarWithNavController(
    activity: AppCompatActivity,
    navController: NavController,
    configuration: AppBarConfiguration = AppBarConfiguration.Builder(navController.graph).build()
): Unit

Sets up the ActionBar returned by AppCompatActivity.getSupportActionBar for use with a NavController.

By calling this method, the title in the action bar will automatically be updated when the destination changes (assuming there is a valid label).

The AppBarConfiguration you provide controls how the Navigation button is displayed. Call navigateUp to handle the Up button.

Destinations that implement androidx.navigation.FloatingWindow will be ignored.

Parameters
`activity: AppCompatActivity`	The activity hosting the action bar that should be kept in sync with changes to the NavController.
`navController: NavController`	The NavController whose navigation actions will be reflected in the title of the action bar.
`configuration: AppBarConfiguration = AppBarConfiguration.Builder(navController.graph).build()`	Additional configuration options for customizing the behavior of the ActionBar

const fun setupWithNavController(
    toolbar: Toolbar,
    navController: NavController,
    openableLayout: Openable?
): Unit

Sets up a Toolbar for use with a NavController.

By calling this method, the title in the Toolbar will automatically be updated when the destination changes (assuming there is a valid label).

The start destination of your navigation graph is considered the only top level destination. On the start destination of your navigation graph, the Toolbar will show the drawer icon if the given Openable layout is non null. On all other destinations, the Toolbar will show the Up button. This method will call navigateUp when the Navigation button is clicked.

Destinations that implement androidx.navigation.FloatingWindow will be ignored.

Parameters
`toolbar: Toolbar`	The Toolbar that should be kept in sync with changes to the NavController.
`navController: NavController`	The NavController whose navigation actions will be reflected in the title of the Toolbar.
`openableLayout: Openable?`	The Openable layout that should be toggled from the Navigation button

See also
`setupWithNavController`

const fun setupWithNavController(
    toolbar: Toolbar,
    navController: NavController,
    configuration: AppBarConfiguration = AppBarConfiguration.Builder(navController.graph).build()
): Unit

Sets up a Toolbar for use with a NavController.

By calling this method, the title in the Toolbar will automatically be updated when the destination changes (assuming there is a valid label).

The AppBarConfiguration you provide controls how the Navigation button is displayed and what action is triggered when the Navigation button is tapped. This method will call navigateUp when the Navigation button is clicked.

Destinations that implement androidx.navigation.FloatingWindow will be ignored.

Parameters
`toolbar: Toolbar`	The Toolbar that should be kept in sync with changes to the NavController.
`navController: NavController`	The NavController whose navigation actions will be reflected in the title of the Toolbar.
`configuration: AppBarConfiguration = AppBarConfiguration.Builder(navController.graph).build()`	Additional configuration options for customizing the behavior of the Toolbar

const fun setupWithNavController(
    collapsingToolbarLayout: CollapsingToolbarLayout,
    toolbar: Toolbar,
    navController: NavController,
    openableLayout: Openable?
): Unit

Sets up a CollapsingToolbarLayout and Toolbar for use with a NavController.

By calling this method, the title in the CollapsingToolbarLayout will automatically be updated when the destination changes (assuming there is a valid label).

Destinations that implement androidx.navigation.FloatingWindow will be ignored.

Parameters
`collapsingToolbarLayout: CollapsingToolbarLayout`	The CollapsingToolbarLayout that should be kept in sync with changes to the NavController.
`toolbar: Toolbar`	The Toolbar that should be kept in sync with changes to the NavController.
`navController: NavController`	The NavController whose navigation actions will be reflected in the title of the Toolbar.
`openableLayout: Openable?`	The Openable layout that should be toggled from the Navigation button

const fun setupWithNavController(
    collapsingToolbarLayout: CollapsingToolbarLayout,
    toolbar: Toolbar,
    navController: NavController,
    configuration: AppBarConfiguration = AppBarConfiguration.Builder(navController.graph).build()
): Unit

Sets up a CollapsingToolbarLayout and Toolbar for use with a NavController.

By calling this method, the title in the CollapsingToolbarLayout will automatically be updated when the destination changes (assuming there is a valid label).

Destinations that implement androidx.navigation.FloatingWindow will be ignored.

Parameters
`collapsingToolbarLayout: CollapsingToolbarLayout`	The CollapsingToolbarLayout that should be kept in sync with changes to the NavController.
`toolbar: Toolbar`	The Toolbar that should be kept in sync with changes to the NavController.
`navController: NavController`	The NavController whose navigation actions will be reflected in the title of the Toolbar.
`configuration: AppBarConfiguration = AppBarConfiguration.Builder(navController.graph).build()`	Additional configuration options for customizing the behavior of the Toolbar

const fun setupWithNavController(
    navigationView: NavigationView,
    navController: NavController
): Unit

Sets up a NavigationView for use with a NavController. This will call onNavDestinationSelected when a menu item is selected. The selected item in the NavigationView will automatically be updated when the destination changes.

If the NavigationView is directly contained with an Openable layout, it will be closed when a menu item is selected.

Similarly, if the NavigationView has a BottomSheetBehavior associated with it (as is the case when using a com.google.android.material.bottomsheet.BottomSheetDialog), the bottom sheet will be hidden when a menu item is selected.

Parameters
`navigationView: NavigationView`	The NavigationView that should be kept in sync with changes to the NavController.
`navController: NavController`	The NavController that supplies the primary and secondary menu. Navigation actions on this NavController will be reflected in the selected item in the NavigationView.

@NavigationUiSaveStateControl
const fun setupWithNavController(
    navigationView: NavigationView,
    navController: NavController,
    saveState: Boolean
): Unit

If the NavigationView is directly contained with an Openable layout, it will be closed when a menu item is selected.

Parameters

navigationView: NavigationView

The NavigationView that should be kept in sync with changes to the NavController.

navController: NavController

The NavController that supplies the primary and secondary menu.

saveState: Boolean

Whether the NavController should save the back stack state. This must always be false: leave this parameter off entirely to use the non-experimental version of this API, which saves the state by default.

Navigation actions on this NavController will be reflected in the selected item in the NavigationView.

const fun setupWithNavController(
    navigationBarView: NavigationBarView,
    navController: NavController
): Unit

Sets up a NavigationBarView for use with a NavController. This will call onNavDestinationSelected when a menu item is selected. The selected item in the NavigationBarView will automatically be updated when the destination changes.

Parameters
`navigationBarView: NavigationBarView`	The NavigationBarView (`BottomNavigationView` or `NavigationRailView`) that should be kept in sync with changes to the NavController.
`navController: NavController`	The NavController that supplies the primary menu. Navigation actions on this NavController will be reflected in the selected item in the NavigationBarView.

@NavigationUiSaveStateControl
const fun setupWithNavController(
    navigationBarView: NavigationBarView,
    navController: NavController,
    saveState: Boolean
): Unit

Parameters

navigationBarView: NavigationBarView

The NavigationBarView (BottomNavigationView or NavigationRailView) that should be kept in sync with changes to the NavController.

navController: NavController

The NavController that supplies the primary menu.

saveState: Boolean

Navigation actions on this NavController will be reflected in the selected item in the NavigationBarView.