ComposableNavHostFragment

Artifact: androidx.navigation:navigation-fragment-compose

Added in 2.8.0

open class ComposableNavHostFragment : NavHostFragment

kotlin.Any
↳	androidx.fragment.app.Fragment
	↳	androidx.navigation.fragment.NavHostFragment
		↳	androidx.navigation.fragment.compose.ComposableNavHostFragment

A NavHostFragment that adds support for ComposableFragment instances via ComposableFragmentNavigator.

Summary

Public companion functions
`ComposableNavHostFragment`	`create(graphResId: @NavigationRes Int, startDestinationArgs: Bundle?)` Create a new `ComposableNavHostFragment` instance with an inflated `androidx.navigation.NavGraph` resource.

Public constructors
`ComposableNavHostFragment()`

Protected functions
`open Unit`	`onCreateNavHostController(navHostController: NavHostController)` Callback for when the `NavHostController` is created.

Inherited functions

From androidx.fragment.app.Fragment

`open Unit`	`dump( prefix: String, fd: FileDescriptor?, writer: PrintWriter, args: Array<String>? )` Print the Fragments's state into the given stream.
`final operator Boolean`	`equals(other: Any?)` Subclasses can not override equals().
`FragmentActivity?`	`getActivity()` Return the `FragmentActivity` this fragment is currently associated with.
`open Boolean`	`getAllowEnterTransitionOverlap()` Returns whether the the exit transition and enter transition overlap or not.
`open Boolean`	`getAllowReturnTransitionOverlap()` Returns whether the the return transition and reenter transition overlap or not.
`Bundle?`	`getArguments()` Return the arguments supplied when the fragment was instantiated, if any.
`FragmentManager`	`getChildFragmentManager()` Return a private FragmentManager for placing and managing Fragments inside of this Fragment.
`open Context?`	`getContext()` Return the `Context` this fragment is currently associated with.
`open Any?`	`getEnterTransition()` Returns the Transition that will be used to move Views into the initial scene.
`open Any?`	`getExitTransition()` Returns the Transition that will be used to move Views out of the scene when the fragment is removed, hidden, or detached when not popping the back stack.
`FragmentManager?`	`getFragmentManager()` This function is deprecated. This has been removed in favor of `getParentFragmentManager()` which throws an `IllegalStateException` if the FragmentManager is null.
`Any?`	`getHost()` Return the host object of this fragment.
`Int`	`getId()` Return the identifier this fragment is known by.
`LayoutInflater`	`getLayoutInflater()` Returns the cached LayoutInflater used to inflate Views of this Fragment.
`open LoaderManager`	`getLoaderManager()` This function is deprecated. Use `LoaderManager.getInstance(this)`.
`Fragment?`	`getParentFragment()` Returns the parent Fragment containing this Fragment.
`FragmentManager`	`getParentFragmentManager()` Return the FragmentManager for interacting with fragments associated with this fragment's activity.
`open Any?`	`getReenterTransition()` Returns the Transition that will be used to move Views in to the scene when returning due to popping a back stack.
`Resources`	`getResources()` Return `requireActivity().getResources()`.
`Boolean`	`getRetainInstance()` This function is deprecated. Instead of retaining the Fragment itself, use a non-retained Fragment and keep retained state in a ViewModel attached to that Fragment.
`open Any?`	`getReturnTransition()` Returns the Transition that will be used to move Views out of the scene when the Fragment is preparing to be removed, hidden, or detached because of popping the back stack.
`open Any?`	`getSharedElementEnterTransition()` Returns the Transition that will be used for shared elements transferred into the content Scene.
`open Any?`	`getSharedElementReturnTransition()` Return the Transition that will be used for shared elements transferred back during a pop of the back stack.
`String`	`getString(resId: @StringRes Int)` Return a localized string from the application's package's default string table.
`String`	`getString(resId: @StringRes Int, vararg formatArgs: Any?)` Return a localized formatted string from the application's package's default string table, substituting the format arguments as defined in `java.util.Formatter` and format.
`String?`	`getTag()` Get the tag name of the fragment, if specified.
`Fragment?`	`getTargetFragment()` This function is deprecated. Instead of using a target fragment to pass results, use `setFragmentResult` to deliver results to `FragmentResultListener` instances registered by other fragments via `setFragmentResultListener`.
`Int`	`getTargetRequestCode()` This function is deprecated. When using the target fragment replacement of `setFragmentResultListener` and `setFragmentResult`, consider using `setArguments` to pass a `requestKey` if you need to support dynamic request keys.
`CharSequence`	`getText(resId: @StringRes Int)` Return a localized, styled CharSequence from the application's package's default string table.
`open Boolean`	`getUserVisibleHint()` This function is deprecated. Use `setMaxLifecycle` instead.
`open View?`	`getView()` Get the root view for the fragment's layout (the one returned by `onCreateView`), if provided.
`open LifecycleOwner`	`@MainThread getViewLifecycleOwner()` Get a `LifecycleOwner` that represents the `Fragment's View` lifecycle.
`open LiveData<LifecycleOwner>`	`getViewLifecycleOwnerLiveData()` Retrieve a `LiveData` which allows you to observe the `lifecycle of the Fragment's View`.
`final Int`	`hashCode()` Subclasses can not override hashCode().
`Boolean`	`isAdded()` Return true if the fragment is currently added to its activity.
`Boolean`	`isDetached()` Return true if the fragment has been explicitly detached from the UI.
`Boolean`	`isHidden()` Return true if the fragment has been hidden.
`Boolean`	`isInLayout()` Return true if the layout is included as part of an activity view hierarchy via the tag.
`Boolean`	`isRemoving()` Return true if this fragment is currently being removed from its activity.
`Boolean`	`isResumed()` Return true if the fragment is in the resumed state.
`Boolean`	`isStateSaved()` Returns true if this fragment is added and its state has already been saved by its host.
`Boolean`	`isVisible()` Return true if the fragment is currently visible to the user.
`open Unit`	`@MainThread @CallSuper onActivityCreated(savedInstanceState: Bundle?)` This function is deprecated. use `onViewCreated` for code touching the view created by `onCreateView` and `onCreate` for other initialization.
`open Unit`	`onActivityResult(requestCode: Int, resultCode: Int, data: Intent?)` This function is deprecated. This method has been deprecated in favor of using the Activity Result API which brings increased type safety via an `ActivityResultContract` and the prebuilt contracts for common intents available in `androidx.activity.result.contract.ActivityResultContracts`, provides hooks for testing, and allow receiving results in separate, testable classes independent from your fragment.
`open Unit`	`@MainThread @CallSuper onAttach(activity: Activity)` This function is deprecated. See `onAttach`.
`open Unit`	`@MainThread onAttachFragment(childFragment: Fragment)` This function is deprecated. The responsibility for listening for fragments being attached has been moved to FragmentManager.
`open Unit`	`@CallSuper onConfigurationChanged(newConfig: Configuration)`
`open Boolean`	`@MainThread onContextItemSelected(item: MenuItem)` This hook is called whenever an item in a context menu is selected.
`open Animation?`	`@MainThread onCreateAnimation(transit: Int, enter: Boolean, nextAnim: Int)` Called when a fragment loads an animation.
`open Animator?`	`@MainThread onCreateAnimator(transit: Int, enter: Boolean, nextAnim: Int)` Called when a fragment loads an animator.
`open Unit`	`@MainThread onCreateContextMenu( menu: ContextMenu, v: View, menuInfo: ContextMenu.ContextMenuInfo? )` Called when a context menu for the `view` is about to be shown.
`open Unit`	`@MainThread onCreateOptionsMenu(menu: Menu, inflater: MenuInflater)` This function is deprecated. `androidx.activity.ComponentActivity` now implements `MenuHost`, an interface that allows any component, including your activity itself, to add menu items by calling addMenuProvider without forcing all components through this single method override.
`open Unit`	`@MainThread @CallSuper onDestroy()` Called when the fragment is no longer in use.
`open Unit`	`@MainThread onDestroyOptionsMenu()` This function is deprecated. `androidx.activity.ComponentActivity` now implements `MenuHost`, an interface that allows any component, including your activity itself, to add menu items by calling addMenuProvider without forcing all components through this single method override.
`open Unit`	`@MainThread @CallSuper onDetach()` Called when the fragment is no longer attached to its activity.
`open LayoutInflater`	`onGetLayoutInflater(savedInstanceState: Bundle?)` Returns the LayoutInflater used to inflate Views of this Fragment.
`open Unit`	`@MainThread onHiddenChanged(hidden: Boolean)` Called when the hidden state (as returned by `isHidden` of the fragment or another fragment in its hierarchy has changed.
`open Unit`	`@UiThread @CallSuper onInflate( activity: Activity, attrs: AttributeSet, savedInstanceState: Bundle? )` This function is deprecated. See `onInflate`.
`open Unit`	`@MainThread @CallSuper onLowMemory()`
`open Unit`	`onMultiWindowModeChanged(isInMultiWindowMode: Boolean)` Called when the Fragment's activity changes from fullscreen mode to multi-window mode and visa-versa.
`open Boolean`	`@MainThread onOptionsItemSelected(item: MenuItem)` This function is deprecated. `androidx.activity.ComponentActivity` now implements `MenuHost`, an interface that allows any component, including your activity itself, to add menu items by calling addMenuProvider without forcing all components through this single method override.
`open Unit`	`@MainThread onOptionsMenuClosed(menu: Menu)` This function is deprecated. `androidx.activity.ComponentActivity` now implements `MenuHost`, an interface that allows any component, including your activity itself, to add menu items by calling addMenuProvider without forcing all components through this single method override.
`open Unit`	`@MainThread @CallSuper onPause()` Called when the Fragment is no longer resumed.
`open Unit`	`onPictureInPictureModeChanged(isInPictureInPictureMode: Boolean)` Called by the system when the activity changes to and from picture-in-picture mode.
`open Unit`	`@MainThread onPrepareOptionsMenu(menu: Menu)` This function is deprecated. `androidx.activity.ComponentActivity` now implements `MenuHost`, an interface that allows any component, including your activity itself, to add menu items by calling addMenuProvider without forcing all components through this single method override.
`open Unit`	`@MainThread onPrimaryNavigationFragmentChanged( isPrimaryNavigationFragment: Boolean )` Callback for when the primary navigation state of this Fragment has changed.
`open Unit`	`onRequestPermissionsResult( requestCode: Int, permissions: Array<String>, grantResults: IntArray )` This function is deprecated. This method has been deprecated in favor of using the Activity Result API which brings increased type safety via an `ActivityResultContract` and the prebuilt contracts for common intents available in `androidx.activity.result.contract.ActivityResultContracts`, provides hooks for testing, and allow receiving results in separate, testable classes independent from your fragment.
`open Unit`	`@MainThread @CallSuper onResume()` Called when the fragment is visible to the user and actively running.
`open Unit`	`@MainThread @CallSuper onStart()` Called when the Fragment is visible to the user.
`open Unit`	`@MainThread @CallSuper onStop()` Called when the Fragment is no longer started.
`open Unit`	`@MainThread @CallSuper onViewStateRestored(savedInstanceState: Bundle?)` Called when all saved state has been restored into the view hierarchy of the fragment.
`open Unit`	`postponeEnterTransition()` Postpone the entering Fragment transition until `startPostponedEnterTransition` or `executePendingTransactions` has been called.
`Unit`	`postponeEnterTransition(duration: Long, timeUnit: TimeUnit)` Postpone the entering Fragment transition for a given amount of time and then call `startPostponedEnterTransition`.
`final ActivityResultLauncher<I>`	`@MainThread <I : Any, O : Any> registerForActivityResult( contract: ActivityResultContract<I, O>, callback: ActivityResultCallback<O> )` Register a request to `start an activity for result`, designated by the given `contract`.
`final ActivityResultLauncher<I>`	`@MainThread <I : Any, O : Any> registerForActivityResult( contract: ActivityResultContract<I, O>, registry: ActivityResultRegistry, callback: ActivityResultCallback<O> )` Register a request to `start an activity for result`, designated by the given `contract`.
`open Unit`	`registerForContextMenu(view: View)` Registers a context menu to be shown for the given view (multiple views can show the context menu).
`Unit`	`requestPermissions(permissions: Array<String>, requestCode: Int)` This function is deprecated. This method has been deprecated in favor of using the Activity Result API which brings increased type safety via an `ActivityResultContract` and the prebuilt contracts for common intents available in `androidx.activity.result.contract.ActivityResultContracts`, provides hooks for testing, and allow receiving results in separate, testable classes independent from your fragment.
`FragmentActivity`	`requireActivity()` Return the `FragmentActivity` this fragment is currently associated with.
`Bundle`	`requireArguments()` Return the arguments supplied when the fragment was instantiated.
`Context`	`requireContext()` Return the `Context` this fragment is currently associated with.
`FragmentManager`	`requireFragmentManager()` This function is deprecated. This has been renamed to `getParentFragmentManager()` to make it clear that you are accessing the FragmentManager that contains this Fragment and not the FragmentManager associated with child Fragments.
`Any`	`requireHost()` Return the host object of this fragment.
`Fragment`	`requireParentFragment()` Returns the parent Fragment containing this Fragment.
`View`	`requireView()` Get the root view for the fragment's layout (the one returned by `onCreateView`).
`open Unit`	`setAllowEnterTransitionOverlap(allow: Boolean)` Sets whether the the exit transition and enter transition overlap or not.
`open Unit`	`setAllowReturnTransitionOverlap(allow: Boolean)` Sets whether the the return transition and reenter transition overlap or not.
`open Unit`	`setArguments(args: Bundle?)` Supply the construction arguments for this fragment.
`open Unit`	`setEnterSharedElementCallback(callback: SharedElementCallback?)` When custom transitions are used with Fragments, the enter transition callback is called when this Fragment is attached or detached when not popping the back stack.
`open Unit`	`setEnterTransition(transition: Any?)` Sets the Transition that will be used to move Views into the initial scene.
`open Unit`	`setExitSharedElementCallback(callback: SharedElementCallback?)` When custom transitions are used with Fragments, the exit transition callback is called when this Fragment is attached or detached when popping the back stack.
`open Unit`	`setExitTransition(transition: Any?)` Sets the Transition that will be used to move Views out of the scene when the fragment is removed, hidden, or detached when not popping the back stack.
`open Unit`	`setHasOptionsMenu(hasMenu: Boolean)` This function is deprecated. This method is no longer needed when using a `MenuProvider` to provide a `Menu` to your activity, which replaces `onCreateOptionsMenu` as the recommended way to provide a consistent, optionally `Lifecycle`-aware, and modular way to handle menu creation and item selection.
`open Unit`	`setInitialSavedState(state: Fragment.SavedState?)` Set the initial saved state that this Fragment should restore itself from when first being constructed, as returned by `FragmentManager.saveFragmentInstanceState`.
`open Unit`	`setMenuVisibility(menuVisible: Boolean)` Set a hint for whether this fragment's menu should be visible.
`open Unit`	`setReenterTransition(transition: Any?)` Sets the Transition that will be used to move Views in to the scene when returning due to popping a back stack.
`open Unit`	`setRetainInstance(retain: Boolean)` This function is deprecated. Instead of retaining the Fragment itself, use a non-retained Fragment and keep retained state in a ViewModel attached to that Fragment.
`open Unit`	`setReturnTransition(transition: Any?)` Sets the Transition that will be used to move Views out of the scene when the Fragment is preparing to be removed, hidden, or detached because of popping the back stack.
`open Unit`	`setSharedElementEnterTransition(transition: Any?)` Sets the Transition that will be used for shared elements transferred into the content Scene.
`open Unit`	`setSharedElementReturnTransition(transition: Any?)` Sets the Transition that will be used for shared elements transferred back during a pop of the back stack.
`open Unit`	`setTargetFragment(fragment: Fragment?, requestCode: Int)` This function is deprecated. Instead of using a target fragment to pass results, the fragment requesting a result should use `setFragmentResultListener` to register a `FragmentResultListener` with a `requestKey` using its `parent fragment manager`.
`open Unit`	`setUserVisibleHint(isVisibleToUser: Boolean)` This function is deprecated. If you are manually calling this method, use `setMaxLifecycle` instead.
`open Boolean`	`shouldShowRequestPermissionRationale(permission: String)` Gets whether you should show UI with rationale before requesting a permission.
`open Unit`	`startActivity(intent: Intent)` Call startActivity from the fragment's containing Activity.
`open Unit`	`startActivity(intent: Intent, options: Bundle?)` Call startActivity from the fragment's containing Activity.
`open Unit`	`startActivityForResult(intent: Intent, requestCode: Int)` This function is deprecated. This method has been deprecated in favor of using the Activity Result API which brings increased type safety via an `ActivityResultContract` and the prebuilt contracts for common intents available in `androidx.activity.result.contract.ActivityResultContracts`, provides hooks for testing, and allow receiving results in separate, testable classes independent from your fragment.
`open Unit`	`startActivityForResult(intent: Intent, requestCode: Int, options: Bundle?)` This function is deprecated. This method has been deprecated in favor of using the Activity Result API which brings increased type safety via an `ActivityResultContract` and the prebuilt contracts for common intents available in `androidx.activity.result.contract.ActivityResultContracts`, provides hooks for testing, and allow receiving results in separate, testable classes independent from your fragment.
`open Unit`	`startIntentSenderForResult( intent: IntentSender, requestCode: Int, fillInIntent: Intent?, flagsMask: Int, flagsValues: Int, extraFlags: Int, options: Bundle? )` This function is deprecated. This method has been deprecated in favor of using the Activity Result API which brings increased type safety via an `ActivityResultContract` and the prebuilt contracts for common intents available in `androidx.activity.result.contract.ActivityResultContracts`, provides hooks for testing, and allow receiving results in separate, testable classes independent from your fragment.
`open Unit`	`startPostponedEnterTransition()` Begin postponed transitions after `postponeEnterTransition` was called.
`open String`	`toString()`
`open Unit`	`unregisterForContextMenu(view: View)` Prevents a context menu to be shown for the given view.

From androidx.navigation.fragment.NavHostFragment

`open Navigator<FragmentNavigator.Destination>`	`createFragmentNavigator()` This function is deprecated. Use {@link #onCreateNavController(NavController)}
`open Unit`	`@CallSuper onAttach(context: Context)` Called when a fragment is first attached to its context.
`open Unit`	`@CallSuper onCreate(savedInstanceState: Bundle?)` Called to do initial creation of a fragment.
`open Unit`	`@CallSuper onCreateNavController(navController: NavController)` This function is deprecated. Override {@link #onCreateNavHostController(NavHostController)} to gain access to the full {@link NavHostController} that is created by this NavHostFragment.
`open View?`	`onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? )` Called to have the fragment instantiate its user interface view.
`open Unit`	`onDestroyView()` Called when the view previously created by `onCreateView` has been detached from the fragment.
`open Unit`	`@CallSuper onInflate( context: Context, attrs: AttributeSet, savedInstanceState: Bundle? )` Called when a fragment is being created as part of a view layout inflation, typically from setting the content view of an activity.
`open Unit`	`@CallSuper onSaveInstanceState(outState: Bundle)` Called to ask the fragment to save its current dynamic state, so it can later be reconstructed in a new instance if its process is restarted.
`open Unit`	`onViewCreated(view: View, savedInstanceState: Bundle?)` Called immediately after `onCreateView` has returned, but before any saved state has been restored in to the view.

Inherited properties

From androidx.fragment.app.Fragment

`open CreationExtras`	`defaultViewModelCreationExtras` The `Fragment's arguments` when this is first called will be used as the defaults to any `androidx.lifecycle.SavedStateHandle` passed to a view model created using this extra.
`open ViewModelProvider.Factory`	`defaultViewModelProviderFactory`
`open Lifecycle`	`lifecycle` Overriding this method is no longer supported and this method will be made `final` in a future version of Fragment.
`final SavedStateRegistry`	`savedStateRegistry`
`open ViewModelStore`	`viewModelStore` Returns the `ViewModelStore` associated with this Fragment

From androidx.navigation.fragment.NavHostFragment

final NavController

navController

The navigation controller for this navigation host.

Public companion functions

create

Added in 2.8.0

fun create(graphResId: @NavigationRes Int, startDestinationArgs: Bundle? = null): ComposableNavHostFragment

Create a new ComposableNavHostFragment instance with an inflated androidx.navigation.NavGraph resource.

Parameters
`graphResId: @NavigationRes Int`	Resource id of the navigation graph to inflate.
`startDestinationArgs: Bundle? = null`	Arguments to send to the start destination of the graph.

Returns
`ComposableNavHostFragment`	A new ComposableNavHostFragment instance.

Public constructors

ComposableNavHostFragment

Added in 2.8.0

ComposableNavHostFragment()

Protected functions

protected open fun onCreateNavHostController(navHostController: NavHostController): Unit

Callback for when the NavHostController is created. If you support any custom destination types, their Navigator should be added here to ensure it is available before the navigation graph is inflated / set.

This provides direct access to the host specific methods available on NavHostController such as NavHostController.setOnBackPressedDispatcher.

By default, this adds a DialogFragmentNavigator and FragmentNavigator.

This is only called once when the navController is called. This will be called in onCreate if the navController has not yet been called. This should not be called directly by subclasses.

Parameters
`navHostController: NavHostController`	The newly created `NavHostController` that will be returned by getNavController after