Navigation

Navigation

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API Reference
androidx.navigation
androidx.navigation.fragment
androidx.navigation.ui

Navigation is a framework for navigating between 'destinations' within an Android application that provides a consistent API whether destinations are implemented as Fragments, Activities, or other components.

Latest Update	Current Stable Release	Next Release Candidate	Beta Release	Alpha Release
November 3, 2021	2.3.5	-	2.4.0-beta02	-

Declaring dependencies

To add a dependency on Navigation, you must add the Google Maven repository to your project. Read Google's Maven repository for more information.

Add the dependencies for the artifacts you need in the build.gradle file for your app or module:

Groovy

dependencies {
  def nav_version = "2.3.5"

  // Java language implementation
  implementation "androidx.navigation:navigation-fragment:$nav_version"
  implementation "androidx.navigation:navigation-ui:$nav_version"

  // Kotlin
  implementation "androidx.navigation:navigation-fragment-ktx:$nav_version"
  implementation "androidx.navigation:navigation-ui-ktx:$nav_version"

  // Feature module Support
  implementation "androidx.navigation:navigation-dynamic-features-fragment:$nav_version"

  // Testing Navigation
  androidTestImplementation "androidx.navigation:navigation-testing:$nav_version"

  // Jetpack Compose Integration
  implementation "androidx.navigation:navigation-compose:2.4.0-beta02"
}

Kotlin

dependencies {
  val nav_version = "2.3.5"

  // Java language implementation
  implementation("androidx.navigation:navigation-fragment:$nav_version")
  implementation("androidx.navigation:navigation-ui:$nav_version")

  // Kotlin
  implementation("androidx.navigation:navigation-fragment-ktx:$nav_version")
  implementation("androidx.navigation:navigation-ui-ktx:$nav_version")

  // Feature module Support
  implementation("androidx.navigation:navigation-dynamic-features-fragment:$nav_version")

  // Testing Navigation
  androidTestImplementation("androidx.navigation:navigation-testing:$nav_version")

  // Jetpack Compose Integration
  implementation("androidx.navigation:navigation-compose:2.4.0-beta02")
}

Safe Args

To add Safe Args to your project, include the following classpath in your top level build.gradle file:

Groovy

buildscript {
    repositories {
        google()
    }
    dependencies {
        def nav_version = "2.3.5"
        classpath "androidx.navigation:navigation-safe-args-gradle-plugin:$nav_version"
    }
}

Kotlin

buildscript {
    repositories {
        google()
    }
    dependencies {
        val nav_version = "2.3.5"
        classpath("androidx.navigation:navigation-safe-args-gradle-plugin:$nav_version")
    }
}

You must also apply one of two available plugins.

To generate Java language code suitable for Java or mixed Java and Kotlin modules, add this line to your app or module's build.gradle file:

Groovy

plugins {
  id 'androidx.navigation.safeargs'
}

Kotlin

plugins {
    id("androidx.navigation.safeargs")
}

Alternatively, to generate Kotlin code suitable for Kotlin-only modules add:

Groovy

plugins {
  id 'androidx.navigation.safeargs.kotlin'
}

Kotlin

plugins {
    id("androidx.navigation.safeargs.kotlin")
}

You must have android.useAndroidX=true in your gradle.properties file as per Migrating to AndroidX.

For information on using Kotlin extensions, see the ktx documentation.

For more information about dependencies, see Add Build Dependencies.

Feedback

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Create a new issue

See the Issue Tracker documentation for more information.

Version 2.4.0

Version 2.4.0-beta02

November 3, 2021

androidx.navigation:navigation-*:2.4.0-beta02 is released. Version 2.4.0-beta02 contains these commits.

API Changes

• The handling of both explicit and implicit deep links now automatically adds the saveState flag when navigating to another graph, ensuring that code such as NavigationUI.setupWithNavController and code using multiple back stacks works as expected. (Ic8807)

Behavior Changes

• Deep link patterns are now compiled lazily in NavDeepLink instead of during inflation. This should improve the inflation time of navigation graphs that include deep links. (b8d257, b/184149935)

Bug Fixes

• Fixed an issue where NavBackStackEntries were being pushed down to Lifecycle.State.CREATED after moving to Lifecycle.State.STARTED when the NavHost is added directly to the activity's setContent(). (Ia5ac1, b/203536683)
• Fixed a race condition where popping a DialogFragment destination off of the back stack before the dialog was actually shown would not actually dismiss the dialog, resulting in a crash when the errant dialog was manually dismissed by the user. (I687e5)
• Fixed an issue where the onNavDestinationSelected API on NavigationUI would return true even if you didn't actually navigate() to that navigation graph. It now uses the same logic used internally by setupWithNavController to only select the MenuItem associated with the current destination using the hierarchy of the destination. (I2b053)

Version 2.4.0-beta01

October 27, 2021

androidx.navigation:navigation-*:2.4.0-beta01 is released. Version 2.4.0-beta01 contains these commits.

New Features

• You can now use by navGraphViewModel with a route as an alternative to using an ID so as to better support using the Navigation Kotlin DSL with Fragments. (I901e3, b/201446416)

API Changes

• The visibleEntries API is now experimental. (I93f6f)

Bug Fixes

• ViewModels will no longer be destroyed when transitions are interrupted by navigating back and forth between the same screens (Id52d8, b/200817333)
• Nullable NavDeepLink arguments no longer require a default value when adding deep links to NavDestinations. (I5aad4, b/201320030)
• NavBackStackEntries now with different Lifecycles are not longer considered equal. This means NavHost will properly recompose all destinations when doing navigation with singleTop and when reselecting bottom menu items. (I1b351, b/196997433)
• Fixed an issue with AbstractListDetailFragment that caused the layout_width and layout_weight attributes on the list pane returned by onCreateListPaneView() to be incorrectly handled or ignored. (f5fbf3)
• The visual state of dialog destinations now correctly stays in sync with the DialogFragmentNavigator's state. This means that manually calling the asynchronous dismiss() API for DialogFragment now properly clears all dialog destinations above the now dismissed dialog. This does not affect cases where you use popUpTo or popBackStack() to dismiss your dialog. (I77ba2)
• AbstractAppBarOnDestinationChangedListener now has clearer error messaging for onDestinationChanged(). (Ie742d)

Version 2.4.0-alpha10

September 29, 2021

androidx.navigation:navigation-*:2.4.0-alpha10 is released. Version 2.4.0-alpha10 contains these commits.

New Features

• NavController now offers the ability to retrieve a list of all visible NavBackStackEntry instances via the visibleEntries StateFlow (Ia964e)
• rememberNavController() now takes a optional set of Navigator instances that will be added to the returned NavController to better support optional Navigators such as those from Accompanist Navigation Material. (I4619e)

Bug Fixes

• Dynamic Navigation will no longer crash when the Activity is recreated. (Ifa6a3, b/197942869)
• Fixed an issue with the system back button that occurs only after popping back to a composable destination that contains a NavHost. (3ed148, b/195668143)
• SafeArgs now generates the arguments for fromBundle() and fromSavedStateHandle() in the proper parameter order. (I824a8, b/200059831)

Version 2.4.0-alpha09

September 15, 2021

androidx.navigation:navigation-*:2.4.0-alpha09 is released. Version 2.4.0-alpha09 contains these commits.

New Features

• You can now use the clearBackStack() method to clear any state that was saved with popBackStack() or popUpToSaveState. (I80a0f)
• You can now pass in a list of arguments and/or deep links to your nested navigation graph's builder and they will automatically be added to the resulting graph. (I8a470, b/182545357)

API Changes

• The navArgument Kotlin DSL function is now part of navigation-common instead of navigation-compose. This will require updating imports to continue to use this function. (I1d095)

Behavior Changes

• When generating arguments, Safe Args now puts parameters without default values before those with default values. (I89709, b/198493585)

Bug Fixes

• When using Navigation Compose, NavGraphs will only be DESTROYED once all their children are DESTROYED. (I86552, b/198741720)
• Nullable NavDeepLink arguments no longer require a default value. (Ia14ef, b/198689811)
• Calling setGraph() with a new graph will now also clear any saved back stacks in addition to its previous behavior of popping the back stack. (I97f96)
• Fixed an issue where OnDestinationChangedListener instances and the currentBackStackEntryFlow were not notified when using launchSingleTop. (Iaaebc)

Dependency Updates

• Navigation Compose now depends on Activity Compose 1.3.1. (I05829)
• Navigation Compose now depends on Lifecycle ViewModel Compose 2.4.0-beta01. (Ib86a3)

Version 2.4.0-alpha08

September 1, 2021

androidx.navigation:navigation-*:2.4.0-alpha08 is released. Version 2.4.0-alpha08 contains these commits.

New Features

• It is now possible to extend the NavType class to create custom NavTypes. Custom types are supported only when building your navigation graph programmatically, such as via the Navigation Graph Kotlin DSL. (I78440, b/196871885)

Behavior Changes

• When generating actions, Kotlin code generated from Safe Args now puts arguments without default values before those with default values as parameters. (Idb697, b/188855904)
• Deep links now verify that all required arguments (those without default values) are present in the Uri. (#204, b/185527157)

Bug Fixes

• Using getBackStackEntry and previousBackStackEntry inside composable(), in conjunction with remember(), will no longer cause an exception for no destination being on the back stack. (I75138, b/194313238)
• Navigation Compose now properly recomposes when changing back stack arguments and using launchSingleTop=true. (Iebd69, b/186392337)
• There will no longer be an ArrayIndexOutOfBoundsException when calling setGraph with a graph with 13 or 29 destinations. (I1a9f1, b/195171984)
• The SafeArgs java generator should no longer cause lint warnings when generating Args classes. (I1a666, b/185843837)

External Contribution

• Thanks ospixd for ensuring that deep links verify that all required arguments (those without default values) are present in the Uri. (#204, b/185527157)

Version 2.4.0-alpha07

August 18, 2021

androidx.navigation:navigation-*:2.4.0-alpha07 is released. Version 2.4.0-alpha07 contains these commits.

Bug Fixes

• Navigation Compose now properly saves state after configuration changes and when changing graphs while using the multiple back stack feature. (If5a3d, b/195141957)
• Re-selecting the same tab when using navigation compose with multiple back stacks will no longer result in a blank screen. (I860dc, b/194925622)
• NavHost now observes for changes in the Lifecycle.State of NavBackStackEntrys which means using a NavHost in a fragment now will properly be recomposed as the lifecycle changes instead of resulting in a blank screen. (I4eb85, b/195864489)
• Fixed an issue where dismissing a DialogFragment would not correctly update the NavController state after recreating your activity (i.e., after a configuration change). (Icd72b)
• Fixed an issue where popping a dialog destination would not update the NavController's system back button handling, potentially causing the NavController to intercept the back button even though it does not have any back stack to pop. (If3b34)
• Safe-args now automatically generates a toSavedStateHandle method for arguments which can be used to test your ViewModel code. (If1e2d, b/193353880)

Version 2.4.0-alpha06

August 4, 2021

androidx.navigation:navigation-*:2.4.0-alpha06 is released. Version 2.4.0-alpha06 contains these commits.

API Changes

• The requireSlidingPaneLayout() and requireDetailPaneNavHostFragment() methods on AbstractListDetailFragment have been renamed to getSlidingPaneLayout() and getDetailPaneNavHostFragment(), respectively. (I34a08)

Behavior Changes

• When navigating with animations (like Crossfade), the new destination’s Lifecycle will now only reach the RESUMED when the animation completes. (If0543, b/172112072, b/194301889)
• Navigation Compose's NavHost now sets the graph as part of the first composition. (Ieb7be)

Bug Fixes

• Popping the last destination of a navigation graph no longer throws a ClassCastException. (If0543, b/172112072, b/194301889)
• Fixed a NullPointerException that would occur when adding a deep link without a Uri and navigating via a route or deep link. (938a0c, b/193805425)
• Fixed an issue in Navigation Compose where a deep linked NavBackStackEntry would not reach the RESUMED state. (I192c5)
• Fixed an issue where popping a dialog destination would not update the NavController's system back button handling, potentially causing the NavController to intercept the back button even though it does not have any back stack to pop. (aosp/1782668)

Version 2.4.0-alpha05

July 21, 2021

androidx.navigation:navigation-*:2.4.0-alpha05 is released. Version 2.4.0-alpha05 contains these commits.

Behavior Changes

• Navigation Compose’s NavHost now always uses Crossfades when navigating through destinations. (I07049, b/172112072)
• You can now make changes to the graph of a NavHost. Graphs with the same startDestination and destinations in the graph will be considered equal and will not clear the NavController back stack. (I0b8db, b/175392262)

Bug Fixes

• Fixed a NoSuchElementException when calling popBackStack() from within a LifecycleObserver attached to a NavBackStackEntry caused by reentrant updates to the NavController's state. (I64621)
• AbstractListDetailFragment now allows SlidingPaneLayout to be completely stripped from your APK when AbstractListDetailFragment is not used. (I611ad)
• NavGraph and NavDestination now override the equals method so two objects with the same values will be considered equal. (I166eb, b/175392262)

Version 2.4.0-alpha04

July 1, 2021

androidx.navigation:navigation-*:2.4.0-alpha04 is released. Version 2.4.0-alpha04 contains these commits.

New Features

• The navigation-fragment artifact now contains a prebuilt implementation of a two pane layout via the new AbstractListDetailFragment. This fragment uses a SlidingPaneLayout to manage a list pane (which your subclass provides) and a detail pane, which uses a NavHostFragment as its implementation, as seen in our example implementation. (Iac4be, b/191276636)
• The NavHost of the navigation-compose artifact now supports dialog destinations in addition to composable destinations. These dialog destinations will each be shown within a Composable Dialog, floating above the current composable destination. (I011d0)

val navController = rememberNavController()
    Scaffold { innerPadding ->
        NavHost(navController, "home", Modifier.padding(innerPadding)) {
            composable("home") {
                // This content fills the area provided to the NavHost
                HomeScreen()
            }
            dialog("detail_dialog") {
                // This content will be automatically added to a Dialog() composable
                // and appear above the HomeScreen or other composable destinations
                DetailDialogContent()
            }
        }
    }

API Changes

• The add function in NavigatorState has been renamed to push. All current calls to add() will need to be changed to push(). (Ie89fc, b/172112072)
• Custom Navigator instances can now use the pushWithTransaction and popWithTransition APIs on NavigatorState to push or pop a destination asynchronously. Note that this APIs are not yet used by any of the included navigators. (Ic4d7c, b/172112072)

Behavior Changes

• NavDeepLinkBuilder now adds PendingIntent.FLAG_IMMUTABLE to the PendingIntent returned by createPendingIntent(), ensuring that this API works as expected when targeting Android 12. (If8c52)

Bug Fixes

• Fixed an issue with <include-dynamic> where arguments passed to the graph would not be correctly passed to the dynamically included graph. (I3e115)
• Fixed a NullPointerException when navigating to a destination using a string[] argument with a default value of @null. (I1fbe8)
• Add ProGuard rules for @Navigator.Name, fixing issues when using R8 3.1 full mode. (I2add9, b/191654433)
• SafeArgs will no longer fail when building your app with Kotlin versions before 1.5.0. (Icd1ff, b/190739257)

Version 2.4.0-alpha03

June 16, 2021

androidx.navigation:navigation-*:2.4.0-alpha03 is released. Version 2.4.0-alpha03 contains these commits.

Bug Fixes

• Fixed an issue where two navigate() calls were needed to navigate to an included dynamic graph. (I7785c, b/188859835)
• Fixed a regression introduced in Navigation 2.4.0-alpha01 where setupActionBarWithNavController() would not properly remove the Up icon when you are on a top level destination. (I5d443, b/189868637)
• Fixed an IllegalStateException when calling popBackStack() after previously popping the root graph of the NavController. (I2a330, b/190265699)
• ProGuard rules for by navArgs() now properly apply when using navigation-common or any artifacts that depend on it. (I68800, b/190082521)
• An OnDestinationChangedListener that calls navigate() the first time it receives a callback now properly get a second callback with the destination it navigated to. (Ie5f9e, b/190228815)
• Safe Args no longer crashes when using it with dynamic feature modules and AGP 7.0+. (I69518, b/189966576)

Known Issue

• Safe Args will fail with an Unable to find method ‘’java.lang.String kotlin.text.CarsKt.titleCase(char, java.util.Locale)’’ error when using Gradle 6.7.0 due to a dependency on an older version of Kotlin. This can be worked around by updating to use Gradle 7.0. (b/190739257)

Version 2.4.0-alpha02

June 2, 2021

androidx.navigation:navigation-*:2.4.0-alpha02 is released. Version 2.4.0-alpha02 contains these commits.

New Features

• Routes are now supported for Activity, Fragment and Dialog destinations, as well as throughout the DynamicNavigation Kotlin DSL. (Ib5544, Ia617b, I22f96, b/188914648, b/188901565)
• NavigationUI has temporarily added experimental APIs to allow opting out of saving your state. While always saving the state is the correct behavior, there are still uses of deprecated libraries (i.e. retained fragments), that cannot be supported when saving the state so this gives an opportunity for apps to slowly convert away from any unsupported APIs. (Idf93c)

• Navigation now providesfindDestination() and getHierarchy() APIs that can be used to help implement custom NavigationUI. findDestination() is an extension function on NavGraph that will locate a destination within the graph. getHierarchy() is a function on NavDestination that can be used to verify if a given destination is within the hierarchy of another.(I2932f, b/188183365)

  val matchingRoute: Boolean = destination.hierarchy.any { it.route == routeToFind }
  

• NavigationUI methods that took a BottomNavigationView have been updated to instead take its superclass introduced in Material 1.4.0, NavigationBarView. This allows these methods to be used with the NavigationRailView. (Ib0b36, b/182938895)

• When inflating an <action> element via XML, animation attributes can use attributes pulled from your theme using the app:enterAnim="?attr/transitionEnter" syntax. (I07bc1, b/178291654)

API Changes

• Kotlin DSL builders that use an ID have been deprecated and should be replaced with builders that use routes (I85b42, b/188816479) (I9f58f, b/188816479)

Bug Fixes

• DialogFragmentNavigator now uses the NavigatorState.pop() API to inform the NavController when a dialog is dismissed by hitting the system back button or clicking outside of it, ensuring that the NavController state is always in sync with the Navigator's state. (I2ead9)

• Navigation no longer gives a ConcurrentModificationException when using manipulating the list of OnDestinationChangedListeners from with an onDestinationChanged callback. (Ib1707, b/188860458)

• Safe Args no longer crashes when attempting to generate direction properties in Kotlin. (Id2416, b/188564435)

• The setId method on NavDestination is now properly annotated with @IdRes, so it only accepts resource ids. (I69b80)

• The int parameter of findNode is now resId instead of resid. (I7711d)

Dependency Update

• Safe-Args now depends on Android Gradle Plugin 4.2.0. This means you should no longer get the using applicationIdTextResource warning. (I6d67b, b/172824579)

Version 2.4.0-alpha01

May 18, 2021

androidx.navigation:navigation-*:2.4.0-alpha01 is released. Version 2.4.0-alpha01 contains these commits.

New Features

• The currentBackStackEntryAsFlow() method on NavController provides a Flow that emits whenever the current NavBackStackEntry changes. This flow can be used as an alternative to manually managing an OnDestinationChangedListener. (I19c4a, #89, b/163947280)

Multiple back stacks

The NavController is responsible for managing the back stack of destinations, adding destinations to the back stack when you navigate() to them and removing them when you call popBackStack() or trigger the system back button. The existing NavOptions class and the integration into <action> entries in the navigation graph XML has been expanded to support saving and restoring the back stack. (b/80029773)

As part of this change, the NavigationUI methods of onNavDestinationSelected(), BottomNavigationView.setupWithNavController() and NavigationView.setupWithNavController() now automatically save and restore the state of popped destinations, enabling support for multiple back stacks without any code changes. When using Navigation with Fragments, this is the recommended way to integrate with multiple back stacks. (Ie07ca)

The underlying APIs for saving and restoring the state are exposed via a number of surfaces:

• In Navigation XML, the <action> element can now use the boolean attributes of app:popUpToSaveState and app:restoreState to save the state of any destinations popped via app:popUpTo and restore the state associated with the destination passed as the app:destination:

  <action
    android:id=”@+id/swap_stack”
    app:destination=”@id/second_stack”
    app:restoreState=”true”
    app:popUpTo=”@id/first_stack_start_destination”
    app:popUpToSaveState=”true” />
  

• In the navOptions Kotlin DSL, you can add the restoreState boolean property and the saveState boolean property on the popUpTo builder:

  // Use the navigate() method that takes a navOptions DSL Builder
  navController.navigate(selectedBottomNavRoute) {
    launchSingleTop = true
    restoreState = true
    popUpTo(navController.graph.startDestinationId) {
      saveState = true
    }
  }
  

• In manually building a NavOptions object via the NavOptions.Builder, you can use the setRestoreState() and new overload to setPopUpTo() that takes an additional saveState parameter.

  NavOptions navOptions = new NavOptions.Builder()
    .setLaunchSingleTop(true)
    .setRestoreState(true)
    .setPopUpTo(navController.getGraph().getStartDestinationId(),
      false, // inclusive
      true) // saveState
    .build();
  navController.navigate(selectedBottomNavId, null, navOptions);
  

• Programmatic calls to popBackStack() can now include an additional saveState parameter.

In all cases, the NavController will save and restore the state of each NavBackStackEntry, including any navigation destination scoped ViewModel instances. The Navigator APIs have been updated to enable each Navigator to support saving and restoring their own state.

The ComposeNavigator used for composable destinations in Navigation Compose and the FragmentNavigator and DynamicFragmentNavigator used for <fragment> destinations in Navigation with Fragments have both been updated to use the new Navigator APIs and support saving and restoring state.

Navigation Routes

A route is a String that uniquely identifies a destination. While previously only used in Navigation Compose, this concept has now graduated to become a part of the core Navigation APIs. This provides an alternative to using integer IDs when constructing your graph through the Navigation Kotlin DSL. (b/172823546)

All APIs that used to only take an ID now have an overload that takes a route String. This includes navigate(), popBackStack(), popUpTo(), and getBackStackEntry().

This has had some API implications:

• The popUpTo kotlin property on the Kotlin DSL has been deprecated in favor of popUpToId. (I59c73, b/172823546)
• The getStartDestination() API has been deprecated in favor of getStartDestinationId(). (I0887f, b/172823546)

For developers upgrading from previous versions of Navigation Compose to Navigation Compose 2.4.0-alpha01, this means that the following imports on extension methods are no longer necessary and should be removed:

import androidx.navigation.compose.navigation
import androidx.navigation.compose.createGraph
import androidx.navigation.compose.getBackStackEntry
import androidx.navigation.compose.navigate
import androidx.navigation.compose.popUpTo

The KEY_ROUTE argument has been replaced with the route property on NavDestination, allowing you to call navBackStackEntry.destination.route directly.

API Changes

• All Navigation artifacts have been rewritten in Kotlin. This has improved the nullability of classes using generics (such as NavType subclasses). All Kotlin extension functions that used to be part of the -ktx artifacts have been moved to their respective main artifacts. The -ktx artifacts will continue to be published, but are completely empty. (b/184292145)
• NavDeepLinkBuilder now supports adding multiple distinct destinations to the generated back stack. (I3ee0d, b/147913689)
• Add factory functions for DynamicNavHostFragment (Icd515, b/175222619)
• The unique ID of a NavBackStackEntry is now exposed as part of its public API. (Ie033a)
• The name and argument fields and destructuring functions of NamedNavArgument are now public. (#174, b/181320559)
• Introduced a new NavBackStackEntry#provideToCompositionLocals extension that provides the NavBackStackEntry to the relevant composition locals. (#175, b/187229439)

Safe Args

• Safe Args now generates a fromSavedStateHandle() method for each NavArgs class. (#122, b/136967621)

  class HomeViewModel(savedStateHandle: SavedStateHandle) : ViewModel() {
    // Create a HomeDestinationArgs class with type safe accessors for each argument
    // defined on your destination
    private val args = HomeDestinationArgs.fromSavedStateHandle(savedStateHandle)
  }
  

• Updated Safe Args to depend on KotlinPoet 1.8.0. (#172, b/183990444)

Behavior Changes

• Navigation now depends on Lifecycle 2.3.1 and now marks setGraph(), popBackStack(), navigateUp(), and navigate(), the methods that update the NavBackStackEntry Lifecycle, as @MainThread, aligning Navigation with the main thread enforcement introduced in Lifecycle 2.3.0. (b/171125856)
• Parsing Enum arguments from deep links is now case insensitive, allowing a deep link like http://www.example.com/red to match a www.example.com/{color} deep link even when the enum has the value of RED. (#152, b/135857840)

Compose Compatibility

• androidx.navigation:navigation-compose:2.4.0-alpha01 is only compatible with Compose version 1.0.0-beta07 and above.

Bug Fixes

• Fixed an issue where trailing argument placeholders would take precedence over deep links that have a matching exact suffix. (#153, b/184072811)
• NavHostFragment now supports custom Navigators that use the same @Navigator.Name("dialog") as the default DialogFragmentNavigator. (Ib1c2c, b/175979140)
• Improved the behavior of NavigatorProvider#addNavigator to ensure that calling it repeatedly with the same instance does not cause issues. (#176, b/187443146)

External Contributions

• Thanks simonschiller for building support for Safe Args generating a fromSavedStateHandle() method for each NavArgs class. (#122, b/136967621)
• Thanks Bradleycorn for making parsing Enum arguments from deep links case insensitive. (#152, b/135857840)
• Thanks osipxd for fixing an issue where trailing argument placeholders would take precedence over deep links that have a matching exact suffix. (#153, b/184072811)
• Thanks tatocaster for updating Safe Args to depend on KotlinPoet 1.8.0. (#172, b/183990444)
• Thanks jossiwolf for making the name and argument fields and destructuring functions of NamedNavArgument public. (#174, b/181320559)
• Thanks jossiwolf for introducing a new NavBackStackEntry#provideToCompositionLocals extension that provides the NavBackStackEntry to the relevant composition locals. (#175, b/187229439)
• Thanks jossiwolf for improved the behavior of NavigatorProvider#addNavigator to ensure that calling it repeatedly with the same instance does not cause issues. (#176, b/187443146)

Navigation Compose Version 1.0.0

Note: Navigation Compose has aligned versioning with the rest of androidx.navigation as of 2.4.0-alpha01. androidx.navigation:navigation-compose:1.0.0-alpha11 became androidx.navigation:navigation-compose:2.4.0-alpha01.

Version 1.0.0-alpha10

April 7, 2021

androidx.navigation:navigation-compose:1.0.0-alpha10 is released. Version 1.0.0-alpha10 contains these commits.

API Changes

• NavHost now accepts a Modifier, which is passed down to the composable container that wraps the destination composables. (I85aca, b/175125483)

Bug Fixes

• NavHost now works even when an OnBackPressedDispatcherOwner is not found, such is the case when previewing the NavHost. (I7d8b4)
• Navigation Compose now depends on Navigation 2.3.5, fixing an issue when using BackHandler inside a NavHost destination. (I7e63b, b/182284739)

Version 1.0.0-alpha09

March 10, 2021

androidx.navigation:navigation-compose:1.0.0-alpha09 is released. Version 1.0.0-alpha09 contains these commits.

API Changes

• LocalViewModelStoreOwner.current now returns a nullable ViewModelStoreOwner to better determine whether a ViewModelStoreOwner is available in the current composition. APIs that require a ViewModelStoreOwner, such as viewModel() and NavHost, still throw an exception if a ViewModelStoreOwner is not set. (Idf39a)

Bug Fixes

• Navigation Compose now depends on Navigation 2.3.4 which includes the fix for attempting to set the same ViewModelStore object after the graph has been set. (I65c24, b/177825470)

Version 1.0.0-alpha08

February 24, 2021

androidx.navigation:navigation-compose:1.0.0-alpha08 is released. Version 1.0.0-alpha08 contains these commits.

New Features

• NavHost now populates the LocalSavedStateRegistryOwner CompositionLocal with that destination’s NavBackStackEntry, ensuring that any state directly saved into the SavedStateRegistry will be saved and restored alongside the destination. (I435d7, b/179469431)

Note: Navigation Compose 1.0.0-alpha08 is only compatible with Compose 1.0.0-beta01.

Version 1.0.0-alpha07

February 10, 2021

androidx.navigation:navigation-compose:1.0.0-alpha07 is released. Version 1.0.0-alpha07 contains these commits.

Dependency Updates

• Navigation Compose now depends on Lifecycle ViewModel Compose 1.0.0-alpha01 to provide viewModel() support to composable destinations. (I7a374)
• NavHost now uses the new LocalOnBackPressedDispatcherOwner from Activity-Compose 1.3.0-alpha01 to get the OnBackPressedDispatcher that is set on the NavController. (I65b12)

Note: Navigation Compose 1.0.0-alpha07 is only compatible with Compose 1.0.0-alpha12.

Version 1.0.0-alpha06

January 28, 2021

androidx.navigation:navigation-compose:1.0.0-alpha06 is released. Version 1.0.0-alpha06 contains these commits.

API Changes

• Added a getBackStackEntry(route: String) extension method on NavController that returns the associated NavBackStackEntry. (If8931)

Note: Navigation Compose 1.0.0-alpha06 is only compatible with Compose 1.0.0-alpha11.

Version 1.0.0-alpha05

January 13, 2021

androidx.navigation:navigation-compose:1.0.0-alpha05 is released. Version 1.0.0-alpha05 contains these commits.

Updated to depend on Compose 1.0.0-alpha10.

Version 1.0.0-alpha04

December 16, 2020

androidx.navigation:navigation-compose:1.0.0-alpha04 is released. Version 1.0.0-alpha04 contains these commits.

• Updated for compatibility with Compose 1.0.0-alpha09.

Note: Navigation Compose 1.0.0-alpha04 is only compatible with Compose 1.0.0-alpha09.

Version 1.0.0-alpha03

December 2, 2020

androidx.navigation:navigation-compose:1.0.0-alpha03 is released. Version 1.0.0-alpha03 contains these commits.

Bug Fixes

• Fixed an issue where popBackStack() and navigateUp() would not work after a configuration change or process death and recreation. (Icea47, b/173281473)
• Navigating to a nested graph within your NavHost now works properly. (I0948d, b/173647694)

Note: Navigation Compose 1.0.0-alpha03 is only compatible with Compose 1.0.0-alpha08.

Version 1.0.0-alpha02

November 11, 2020

androidx.navigation:navigation-compose:1.0.0-alpha02 is released. Version 1.0.0-alpha02 contains these commits.

API Changes

• Navigation compose now support NavOptions for using popUpTo and launchSingleTop operations (If96c3, b/171468994)
• Added a navigation function that takes a route instead of an ID that allows you to construct nested graphs in the Navigation Compose DSL. (I1661d)
• startDestination now comes before the route in the list of a parameters for a NavHost (Ie620e)
• You can now create a graph using the route as a start destination outside of a NavHost composable. (Iceb75)

Version 1.0.0-alpha01

October 28, 2020

android.navigation:navigation-compose:1.0.0-alpha01 is released. Version 1.0.0-alpha01 contains these commits.

New Features

The navigation-compose artifact provides integration between the Navigation Component and Jetpack Compose. It uses @Composable functions as the destinations in your application.

This initial release provides:

• A NavHost composable that allows you to construct your navigation graph via a Kotlin DSL.
• Scoping of lifecycle, ViewModel, and remembered state at the destination level.
• Automatic integration with the system back button.
• Support for passing arguments, attaching deep links to destinations, and returning a result to previous destinations.
• Compose specific helpers in rememberNavController() and currentBackStackEntryAsState() to allow hoisting state and connecting the NavController to composables outside of the NavHost (such as a bottom navigation bar).

See the Compose Navigation guide for more information.

Version 2.3.5

Version 2.3.5

April 7, 2021

androidx.navigation:navigation-*:2.3.5 is released. Version 2.3.5 contains these commits.

New Features

• When navigating using a NavDeepLinkRequest or Uri, you can now access the Uri, action, and mime type in the resulting destination by getting the intent from arguments via KEY_DEEP_LINK_INTENT, mirroring the functionality already available for external deep linking. (I975c3, b/181521877)

Bug Fixes

• OnBackPressedCallbacks added to a dispatcher with the NavBackStackEntry as the LifecycleOwner now properly intercept back after the Activity Lifecycle is STOPPED, then STARTED (Iff94f, b/182284739)
• Deep link domain parsing is now case insensitive, ensuring that www.example.com matches both www.example.com and www.Example.com. Note that query parameter names are still case sensitive. (#144, b/153829033)
• Fixed a NullPointerException that could occur when a destination has multiple non-nullable default arguments and you navigate to that destination while only overriding a subset of those arguments. (aosp/1644827)

Dependency Updates

• The Navigation Safe Args Gradle Plugin now depends on Kotlin Gradle Plugin 1.4.31. (aosp/1661058, b/181156413)

External Contribution

• Thanks bentrengrove for the pull request making deep link domain parsing case insensitive. (#144, b/153829033)

Version 2.3.4

Version 2.3.4

March 10, 2021

androidx.navigation:navigation-*:2.3.4 is released. Version 2.3.4 contains these commits.

New Features

• ReferenceType arguments can now be properly parsed when sent as part of a deeplink URI. This supports both the raw integer value as well as hex values prefixed by 0x. (#127, b/179166693)
• The android:defaultValue for an argument with app:argType="float" now supports integer default values, allowing you to use android:defaultValue="0"rather than requiring the use of 0.0. (#117, b/173766247)

Bug Fixes

• Fix stuck installation progress when using Navigation’s support for dynamic features. (Ib27a7, b/169636207)
• Calling setViewModelStore or setLifecycleOwner with the same object that has already been set will now be a no-op (Idf491, b/177825470)
• Safe-Args now adds suppress annotations on the proper methods when using java. (I8fbc5, b/179463137)

External Contributions

• Thanks JvmName for the pull request to ensure that ReferenceType arguments can now be properly parsed when sent as part of a deeplink URI. (#127, b/179166693)
• Thanks tatocaster for the pull request to allow the defaultValue for an argument with app:argType=”float” now supports integer default values. (#117, b/173766247)

Version 2.3.3

Version 2.3.3

January 27, 2021

androidx.navigation:navigation-*:2.3.3 is released. Version 2.3.3 contains these commits.

Bug Fixes

• There is no longer a crash when popping a NavBackStackEntry before its Lifecycle is moved to CREATED. (Ie3ba3)
• Fixed regression caused by b/171364502 where navigating to an activity with an animation resource value of 0 caused a ResourceNotFoundException. (I7aedb, b/176819931)

Version 2.3.2

Version 2.3.2

December 2, 2020

androidx.navigation:navigation-*:2.3.2 is released. Version 2.3.2 contains these commits.

Bug Fixes

• Fixed a regression in NavigationUI where using an <activity> destination with onNavDestinationSelected would fail to navigate to the Activity. (I22e34, b/171364502)
• Fixed an issue where navigation-dynamic-features-fragment would result in navigating to the newly installed destination multiple times. (aosp/1486056, b/169636207)
• Fixed an issue where default arguments would not be sent to OnDestinationChangedListener instances when using launchSingleTop. (I2c5cb)
• Fixed an issue where navigating to a nested navigation graph would not create a new graph instance on the back stack. (Ifc831)
• Fixed an issue where using navigate() with a popUpTo that removed the last destination in a navigation graph would not immediately destroy and remove the navigation graph itself from the back stack. (I910a3)
• Navigation SafeArgs now uses KotlinPoet version 1.7.2 which adds support for Kotlin's explicit API mode. (I918b5)
• NavHostFragment.findNavController(Fragment) now also checks the root decor view of a DialogFragment in addition to the existing checks of the Fragment hierarchy and Fragment's view hierarchy. This allows you to test dialog fragments that use Navigation with FragmentScenario and Navigation.setViewNavController(). (I69e0d)

Version 2.3.1

Version 2.3.1

October 14, 2020

androidx.navigation:navigation-*:2.3.1 is released. Version 2.3.1 contains these commits.

New Features

• Default Animator resources have been added to Navigation UI and are recommended over the default animation resources. (b/167430145)
• NavOptions now overrides the hashcode and equals methods (b/161586466)
• Navigation now includes the current destination in the “No destination with ID” IllegalArgumentException, which should improve the developer debugging experience. (b/168311416)

Bug Fixes

• Safe Args will no longer wrap the return line, even if the generated argument class name is longer than 100 characters. (b/168584987)

Dependency Changes

• navigation-ui now depends on DrawerLayout 1.1.1, ensuring that NavigationUI is able to open the drawer even when using LOCK_MODE_LOCKED_CLOSED or LOCK_MODE_LOCKED_OPEN. (b/162253907)
• Safe Args now depends on KotlinPoet 1.6.0 (aosp/1435911)
• Safe Args now depends on AGP 4.0.1 (aosp/1442337)

Version 2.3.0

Note: This version is dependent on the Java 8 programming language. Please read Use Java 8 language features to learn how to use it in your project.

Version 2.3.0

June 24, 2020

androidx.navigation:navigation-*:2.3.0 is released. Version 2.3.0 contains these commits.

Major changes since 2.2.0

• Feature Module integration: The navigation-dynamic-features-runtime and navigation-dynamic-features-fragment artifacts allow you to navigate to destinations that are defined in feature modules, automatically handling the installation of the feature modules as needed. See Navigate with feature modules for more information.
• Navigation Testing: The navigation-testing artifact provides a TestNavHostController that allows you to set the current destination and verify the back stack after navigation operations. See Test Navigation for more information.
• Returning a Result: The NavBackStackEntry associated with each destination on the Navigation back stack now allows you to access a SavedStateHandle suitable for storing small amounts of saved state that should be associated with a particular back stack entry. See Returning a result to the previous Destination for more information.
• NavigationUI support for Openable: All usages of DrawerLayout in NavigationUI have been replaced with the more generic Openable interface added in CustomView 1.1.0 and implemented by DrawerLayout in DrawerLayout 1.1.0.
• Action and Mime Type support in deep links: Deep linking has been expanded to support app:action and app:mimeType in addition to the app:uri previously available. NavController now supports navigating by any combination of these fields via the new NavDeepLinkRequest class. See Navigate using NavDeepLinkRequest for more information.

Note: Support for adding an action and mime type in the visual editor is available in Android Studio 4.1 Canary 10 and higher.

Known Issues

• Support for deep link actions and mime types is not yet available in Manifest Merger. Until that work is completed, any generated <intent-filter> elements from the <nav-graph> element in your manifest won't include your mime type in its <data> element or your custom <action>. You must manually add an appropriate <intent-filter> to your manifest.

Version 2.3.0-rc01

June 10, 2020

androidx.navigation:navigation-*:2.3.0-rc01 is released. Version 2.3.0-rc01 contains these commits.

Bug Fixes

• Fixed a NullPointerException when replacing an instance of a destination with no arguments with another instance with arguments with singleTop. (b/158006669)
• All destination is unknown exceptions thrown by NavController now have additional debugging information to help determine the state of the NavController. (b/157764916)

Version 2.3.0-beta01

May 20, 2020

androidx.navigation:navigation-*:2.3.0-beta01 are released. Version 2.3.0-beta01 contains these commits.

Bug Fixes

• Fixed an issue where the Lifecycle of the NavBackStackEntry would not be properly updated after process death. (b/155218371)
• OnDestinationChangedListener instances registered before calling setGraph() are now properly sent the restored destination after a process death. (b/155218371)
• When using singleTop, the NavBackStackEntry now correctly has its arguments updated and the updated arguments are sent to all OnDestinationChangeListener instances. (b/156545508)

Dependency Updates

• The NavigationUI artifact now depends on CustomView 1.1.0-rc01 and DrawerLayout 1.1.0-rc01. (aosp/1309696)

Version 2.3.0-alpha06

April 29, 2020

androidx.navigation:navigation-*:2.3.0-alpha06 is released. (Version 2.3.0-alpha06 contains these commits.)

New Features

• Deep linking has been expanded to support app:action and app:mimeType in addition to the app:uri previously available. NavController now supports navigating by any combination of these fields via the new NavDeepLinkRequest class. (b/136573074, b/135334841)

Note: Support for deep link actions and mime types is not yet available in Android Studio or in Manifest Merger. Until those are completed, you won't see the new attributes in the visual editor and any generated <intent-filter> elements won't include your mime type in its <data> element or your custom <action>. You can add the attributes manually to the <deeplink> element in XML and manually add an <intent-filter> to your manifest, respectively.

API Changes

• Greatly expanded the Kotlin DSL support for Dynamic Navigation destinations. (b/148969800)

Bug Fixes

• Fixed an issue where deep link Intents would be ignored when using a nested start destination. (b/154532067)

Version 2.3.0-alpha05

April 15, 2020

androidx.navigation:navigation-*:2.3.0-alpha05 is released. Version 2.3.0-alpha05 contains these commits.

New Features

• For dynamic graph includes using <include-dynamic>, you no longer need to specify app:graphPackage and a default one will be used by adding moduleName suffix to the applicationId after a dot. If you do need to customize your graphPackage, an ${applicationId} placeholder is now supported. (b/152696768)
• The Navigation Graph Kotlin DSL now exposes a defaultArguments Map for actions, mirroring the ability to set default values on <action> elements in Navigation XML files. (b/150345605)

Bug Fixes

• From Navigation 2.2.2: Fixed an IllegalStateException when deep linking to the start destination of your graph when you have multiple NavHostFragment instances in your Activity. (b/147378752)

Dependency updates

• Navigation now depends on Fragment 1.2.4. (aosp/1277325)
• Dynamic Navigation now depends on Play Core 1.7.2. (aosp/1282257)

Version 2.3.0-alpha04

March 18, 2020

androidx.navigation:navigation-*:2.3.0-alpha04 is released. Version 2.3.0-alpha04 contains these commits.

New Features

• Added support for feature module activity and fragment destinations in the Navigation Kotlin DSL. (b/148969800)

API Changes

• The DynamicExtras class no longer uses a builder pattern and can now be constructed directly. (aosp/1253671)
• DynamicActivityNavigator now takes a Context in its constructor rather than an Activity. (aosp/1250252)

Bug Fixes

• NavigationUI no longer ignores empty labels (i.e., a destination with android:label=””) and now correctly sets the title to an empty string. (b/148679860)

Dependency Updates

• The Navigation Dynamic Features artifacts now depend on Play Core 1.6.5. (b/149556401)

Version 2.3.0-alpha03

March 4, 2020

androidx.navigation:navigation-*:2.3.0-alpha03 is released. Version 2.3.0-alpha03 contains these commits.

API Changes

• Instead of relying on the concrete DrawerLayout class, AppBarConfiguration now uses the Openable interface introduced in CustomView 1.1.0-alpha02 (which DrawerLayout implements as of DrawerLayout 1.1.0-alpha04), allowing you to use custom implementations of Openable with NavigationUI. (b/129030452)

Bug Fixes

• The navigation-common-ktx ProGuard rules now correctly only keep the NavArgs classes that are used rather than all NavArgs instances. (b/150213558)

Dependency changes

• Navigation has reverted its dependency on Core 1.2.0 and now depends on Core 1.1.0 to avoid forcing developers to move to a newer dependency when Navigation does not depend on any new APIs in Core 1.2.0.

Version 2.3.0-alpha02

February 19, 2020

androidx.navigation:navigation-*:2.3.0-alpha02 is released. Version 2.3.0-alpha02 contains these commits.

New Features

• The NavBackStackEntry now allows you to access a SavedStateHandle suitable for storing small amounts of saved state that should be associated with a particular back stack entry. See Returning a result for an example use case. (b/79672220)

API Changes

• Convenience methods of getCurrentBackStackEntry() and getPreviousBackStackEntry() have been added to make it easier to retrieve a NavBackStackEntry for the current and previous destinations. (b/79672220)

Bug Fixes

• navigateUp() now passes the current destination’s arguments and the KEY_DEEP_LINK_INTENT to the previous destination when launching your app on your own task stack. (b/147456890)

Dependency changes

• Navigation now depends on Core 1.2.0.

Version 2.3.0-alpha01

February 5, 2020

androidx.navigation:navigation-*:2.3.0-alpha01 is released. Version 2.3.0-alpha01 contains these commits.

New features

• The new navigation-testing artifact provides a TestNavHostController class. This class provides an alternative to using a mock NavController when testing Navigation that allows you to set the current destination and verify the back stack after navigation operations. (b/140884273)
• The new navigation-dynamic-features-fragment (and its transitive dependency, navigation-dynamic-features-runtime) allows you to include destinations or entire navigation graphs (via <include-dynamic>) from feature modules, providing seamless installation of on-demand feature modules when navigating to those destinations. See Navigate with feature modules for more information. (b/132170186)

Bug fixes

• From Navigation 2.2.1: Deep links without query parameters now correctly ignore any query parameters rather than appending them to trailing {argument} elements or not matching the deep link. (b/147447512)
• From Navigation 2.2.1: The navigation-ui ProGuard rules for DrawerArrowDrawable have been updated to ensure that android.enableJetifier=true is not required. (b/147610424)
• From Navigation 2.2.1: The navigation-common-ktx module now has a unique manifest package name instead of sharing the same manifest package name as navigation-runtime-ktx. (aosp/1141947)

Dependency updates

• From Navigation 2.2.1: Navigation 2.2.1 now depends on Lifecycle ViewModel SavedState 2.2.0 and Fragment 1.2.1.

Version 2.2.2

Note: This version is dependent on the Java 8 programming language. Please read Use Java 8 language features to learn how to use it in your project.

Version 2.2.2

April 15, 2020

androidx.navigation:navigation-*:2.2.2 are released. Version 2.2.2 contains these commits.

Bug Fixes

• Fixed an IllegalStateException when deep linking to the start destination of your graph when you have multiple NavHostFragment instances in your Activity. (b/147378752)
• NavigationUI no longer ignores empty labels (i.e., a destination with android:label=””) and now correctly sets the title to an empty string. This was previously released in Navigation 2.3.0-alpha04. (b/148679860)
• The navigation-common-ktx ProGuard rules now correctly only keep the NavArgs classes that are used rather than all NavArgs instances. This was previously released in Navigation 2.3.0-alpha03. (b/150213558

Dependency updates

• Navigation now depends on Fragment 1.2.4. (aosp/1277325)

Version 2.2.1

Note: This version is dependent on the Java 8 programming language. Please read Use Java 8 language features to learn how to use it in your project.

Version 2.2.1

February 5, 2020

androidx.navigation:navigation-*:2.2.1 is released. Version 2.2.1 contains these commits.

Bug fixes

• Deep links without query parameters now correctly ignore any query parameters rather than appending them to trailing {argument} elements or not matching the deep link. (b/147447512)
• The navigation-ui ProGuard rules for DrawerArrowDrawable have been updated to ensure that android.enableJetifier=true is not required. (b/147610424)
• The navigation-common-ktx module now has a unique manifest package name instead of sharing the same manifest package name as navigation-runtime-ktx. (aosp/1141947)

Dependency updates

• Navigation 2.2.1 now depends on Lifecycle ViewModel SavedState 2.2.0 and Fragment 1.2.1.

Version 2.2.0

Note: This version is dependent on the Java 8 programming language. Please read Use Java 8 language features to learn how to use it in your project.

Version 2.2.0

January 22, 2020

androidx.navigation:navigation-*:2.2.0 is released. Version 2.2.0 contains these commits.

Important changes since 2.1.0

• NavBackStackEntry: You can now call NavController.getBackStackEntry(), passing in the ID of a destination or navigation graph on the back stack. The returned NavBackStackEntry provides a Navigation-driven LifecycleOwner, ViewModelStoreOwner (the same returned by NavController.getViewModelStoreOwner()), and SavedStateRegistryOwner, in addition to providing the arguments used to start that destination.
• Lifecycle ViewModel SavedState Integration: SavedStateViewModelFactory is now the default factory used when using by navGraphViewModels() or the ViewModelProvider constructor with a ViewModelStoreOwner returned by NavController.getBackStackEntry() or NavController.getViewModelStoreOwner().
• Query Parameter Support for Deep Links: Deep links with query parameters now support reordered query parameters; arguments that have a default value or are nullable are now optional when matching deep links.
• Improved Animation Support: NavHostFragment now uses FragmentContainerView from Fragment 1.2.0, fixing animation z-ordering issues and window insets dispatching to Fragments.

Version 2.2.0-rc04

December 18, 2019

androidx.navigation:navigation-*:2.2.0-rc04 is released. Version 2.2.0-rc04 contains these commits.

Bug fixes

• Adjusted the default fade animations used by navigation-ui to match the adjusted fade animations in Fragment 1.2.0-rc04. (b/145769814)

Version 2.2.0-rc03

December 4, 2019

androidx.navigation:navigation-*:2.2.0-rc03 is released. Version 2.2.0-rc03 contains these commits.

Bug fixes

• Fixed an issue with deep link parsing when using query parameters and an argument as the last part of the path that prevented more than one character of the final path argument from being parsed. (b/144554689)
• Fixed an issue with deep link parsing where optional parameters would receive "@null" instead of null. (b/141613546)
• NavHostFragment now correctly restores the graph after a configuration change when used with FragmentContainerView. (b/143752103)

Dependency changes

• Navigation now depends on Lifecycle 2.2.0-rc03, Lifecycle ViewModel SavedState 1.0.0-rc03, Activity 1.1.0-rc03, and Fragment 1.2.0-rc03 where appropriate.

Version 2.2.0-rc02

November 7, 2019

androidx.navigation:navigation-*:2.2.0-rc02 is released. Version 2.2.0-rc02 contains these commits.

Dependency changes

• Navigation now depends on androidx.lifecycle 2.2.0-rc02.

Version 2.2.0-rc01

October 23, 2019

androidx.navigation:navigation-*:2.2.0-rc01 is released with no changes since 2.2.0-beta01. Version 2.2.0-rc01 contains these commits.

Version 2.2.0-beta01

October 9, 2019

androidx.navigation:navigation-*:2.2.0-beta01 is released. Version 2.2.0-beta01 contains these commits.

New features

• NavDestination and its subclasses now override toString() to provide more helpful information when debugging. (b/141264986)

Behavior changes

• Extra query parameters are now ignored when matching deep links rather than causing the match to fail. (b/141482822)

Bug fixes

• Fixed an issue where arguments in a deep link’s path would be ignored if query parameters were also specified. (b/141505755)
• The navArgs() Kotlin extension on Activity now has a better error message when there are no extras. (b/141408999)
• Safe Args generated Directions Java classes now contain default values. (b/141099045)
• Safe Args generated Args Java classes now contain default values. (b/140123727)
• When using a Toolbar, NavigationUI no longer animates the text change when moving between two top level destinations. (b/140848160)

Version 2.2.0-alpha03

September 18, 2019

androidx.navigation:navigation-*:2.2.0-alpha03 is released. Version 2.2.0-alpha03 contains these commits.

Behavior changes

• Calling setViewModelStore() after calling setGraph now results in an IllegalStateException. This should always be set by the NavHost as part of the initial setup to ensure that all NavBackStackEntry instances have a consistent storage for ViewModel instances. (aosp/1111821)

Bug fixes

• Fixed a ConcurrentModificationException when using ViewModel instances attached to multiple different navigation graph scoped ViewModelStore instances. (aosp/1112257)

Version 2.2.0-alpha02

September 5, 2019

androidx.navigation:navigation-*:2.2.0-alpha02 is released. The commits included in this version can be found here.

New features

• Deep links with query parameters now support reordered query parameters; arguments that have a default value or are nullable are now optional when matching deep links. (b/133273839)
• You can now call NavController.getBackStackEntry(), passing in the ID of a destination or navigation graph on the back stack. The returned NavBackStackEntry provides a Navigation-driven LifecycleOwner, ViewModelStoreOwner (the same returned by NavController.getViewModelStoreOwner()), and SavedStateRegistryOwner, in addition to providing the arguments used to start that destination. (aosp/1101691, aosp/1101710)

Bug fixes

• Fixed an issue where adding a NavHostFragment to ViewPager2 failed with an IllegalArgumentException. (b/133640271)
• NavInflater now avoids calling getResourceName() unnecessarily, speeding up inflation time by up to 40%. (b/139213740)

Version 2.2.0-alpha01

August 7, 2019

androidx.navigation:navigation-*:2.2.0-alpha01 is released. The commits included in this version can be found here.

New features

• SavedStateViewModelFactory is now the default factory used when using by navGraphViewModels() or the ViewModelProvider constructor with a ViewModelStoreOwner returned by NavController.getViewModelStoreOwner(). (b/135716331)

API changes

• From Navigation 2.1.0-rc01: The deprecated getViewModelStore() API on NavController introduced in 2.1.0-alpha02 has been removed. (aosp/1091021)

Bug fixes

• NavHostFragment now uses FragmentContainerView, fixing animation z-ordering issues and window insets dispatching to Fragments. (b/137310379)

Version 2.1.0

Version 2.1.0

September 5, 2019

androidx.navigation:navigation-*:2.1.0 is released. The commits included in this version can be found here.

Important changes since 2.0.0

• Scoping ViewModels to a navigation graph: You can now create ViewModels that are scoped at the navigation graph level using the by navGraphViewModels() property delegate for Kotlin users using the -ktx libraries or by using the getViewModelStoreOwner() API added to NavController. See Share UI-related data between destinations for more information.
• Dialog destinations: You can now create <dialog> destinations that will show a DialogFragment when you navigate to them. NavHostFragment supports dialog destinations by default. See Create a destination from a DialogFragment for more information.
• Navigating by Uri: You can now navigate using a Uri, which uses the <deepLink> you’ve added to a destination to navigate there. See Navigate using Uri for more information.
• NavHostController: APIs used specifically for constructing a custom NavHost have been moved to NavHostController, allowing implementations to connect their NavController to the hosting LifecycleOwner, OnBackPressedDispatcher, and ViewModelStore.

Version 2.1.0-rc01

August 7, 2019

androidx.navigation:navigation-*:2.1.0-rc01 is released. The commits included in this version can be found here.

API changes

• The deprecated getViewModelStore() API on NavController introduced in 2.1.0-alpha02 has been removed. (aosp/1091021)

Version 2.1.0-beta02

July 19, 2019

androidx.navigation:*:2.1.0-beta02 is released. The commits included in this version can be found here.

Note: This version is dependent on the Java 8 programming language. Please read Use Java 8 language features to learn how to use it in your project.

Bug fixes

• Removed unintentional jacoco dependency that was introduced in 2.1.0-beta01. (b/137782950)

Version 2.1.0-beta01

July 17, 2019

androidx.navigation:*:2.1.0-beta01 is released. The commits included in this version can be found here.

Caution: This version contains an unintentional dependency on org.jacoco:org.jacoco.agent:0.8.3, which can cause a build failure. Please update to the latest version, in which this dependency has been removed.

Note: This version is dependent on the Java 8 programming language. Please read Use Java 8 language features to learn how to use it in your project.

New features

• NavigationUI now animates the removal of the Up button when using setupWithNavController() with a Toolbar or CollapsingToolbarLayout. (b/131403621)

Bug fixes

• Fixed a timing issue when using multiple NavHostFragments with the same container with findNavController(). (b/136021571)

Version 2.1.0-alpha06

July 2, 2019

androidx.navigation:*:2.1.0-alpha06 is released. The commits included in this version can be found here.

Note: This version is dependent on the Java 8 programming language. Please read Use Java 8 language features to learn how to use it in your project.

New features

• The app:navGraph attribute used by NavHostFragment has now been moved to the navigation-runtime artifact. Custom navigators that can be added via XML should use this attribute to gain integration with the Navigation Editor’s Host panel. (b/133880955)

API changes

• The getViewModelStore() API on NavController has been deprecated in favor of the new getViewModelStoreOwner() method that returns a ViewModelStoreOwner. (aosp/987010)
• The implementation of floating window destinations, such as <dialog> destinations, has been generalized into a marker interface, FloatingWindow, that all <dialog> destinations now implement. NavigationUI methods for interacting with the top app bar now ignore FloatingWindow destinations. (b/133600763)

Behavior changes

• Navigation now correctly keeps its state in sync with what is seen on the screen when using a <dialog> destination. As a consequence, Navigation now automatically pops <dialog> destinations when you navigate to a non-dialog and non-activity destination, such as a <fragment> destination. (b/134089818)

Bug fixes

• Navigation now suppresses the animation that occurs when recreating the activity when handling a deep link, fixing a visual flash. (b/130362979)
• Fixed a bug where the Navigation back stack would be out of sync when popping a Fragment as the initial fragment is being added. (b/133832218)

Version 2.1.0-alpha05

June 5, 2019

androidx.navigation:*:2.1.0-alpha05 is released. The commits included in this version can be found here.

API changes

• Host related APIs on NavController have been renamed and moved to a new subclass of NavController, NavHostController. (aosp/966091)
• The NavController setHostOnBackPressedDispatcherOwner() method has been replaced with NavHostController’s setOnBackPressedDispatcher() method and now requires that you call setLifecycleOwner() prior to calling it. (aosp/965409)
• NavHostController now contains a enableOnBackPressed(boolean) method that replaces the NavHostOnBackPressedManager class that was previously returned by setHostOnBackPressedDispatcherOwner(). (aosp/966091)

Bug fixes

• Fixed an issue where the back stack was not correct after navigating by URI. (b/132509387)
• Deep links automatically handled by NavController now only trigger once. (b/132754763)

Version 2.1.0-alpha04

May 16, 2019

androidx.navigation:*:2.1.0-alpha04 is released. The commits included in this version can be found here.

Bug fixes

• NavHostFragment correctly respects app:defaultNavHost when intercepting the system Back button events, fixing a regression in Navigation 2.1.0-alpha03. b/132077777
• DialogFragmentNavigator now correctly handles popBackStack() and navigateUp() operations. b/132576764
• Fixed an IllegalStateException: unknown destination during restore issue when repeatedly navigating between nested graphs. b/131733658

Version 2.1.0-alpha03

May 7, 2019

androidx.navigation:*:2.1.0-alpha03 is released. The commits included in this version can be found here.

Known Issues

• NavHostFragment continues to intercept the system Back button despite using app:defaultNavHost="false" b/132077777

New features

• You can now create <dialog> destinations that will show a DialogFragment when you navigate to them. NavHostFragment supports dialog destinations by default. b/80267254
• In addition to calling navigate with a resource id or a NavDirections instance, you can now navigate via a Uri, which uses the <deepLink> you’ve added to a destination to navigate to the correct destination. b/110412864

Behavior changes

• The default animations provided by NavigationUI have been sped up from 400ms to 220ms to match the default animation speed of activities and fragments. b/130055522

API changes

• The createFragmentNavigator() method of NavHostFragment has been deprecated and its functionality moved to the new onCreateNavController() method to make it more clear that this is the correct entry point of adding custom Navigators when subclassing NavHostFragment. b/122802849
• A hasDeepLink() method has been added to NavDestination to allow you to check if a given Uri can be handled by that destination or, in the case of a NavGraph, any destination in the navigation graph. b/117437718

Bug fixes

• Default arguments are now correctly passed to OnDestinationChangedListener instances. b/130630686
• NavHostFragment now intercepts system Back events using the OnBackPressedDispatcher, fixing an issue when doing conditional navigation in Fragment lifecycle methods upon returning to a Fragment. b/111598096
• For Safe Args, an android:defaultValue=”@null” with an unspecified app:argType is now properly inferred as a string argument. b/129629192

Version 2.1.0-alpha02

April 3, 2019

androidx.navigation:*:2.1.0-alpha02 is released. The commits included in this version can be found here.

New features

• You can now create ViewModels that are scoped at a navigation graph level via the by navGraphViewModels() property delegate for Kotlin users or by using the getViewModelStore() API added to NavController. b/111614463

API changes

• You can now add an app:targetPackage to an <activity> destination to limit the matching package name. It supports app:targetPackage="${applicationId}" for restricting the package to your own application id. b/110975456

Bug fixes

• The android:name for <activity> destinations is no longer parsed into a Class at inflation time, preventing ClassNotFoundExceptions when using dynamic features. b/124538597

Version 2.1.0-alpha01

March 19, 2019

This is the first alpha release of Navigation 2.1.0.

Dependency changes

• Navigation now depends on androidx.core:core:1.0.1 and androidx.fragment:fragment:1.1.0-alpha05. This release also removes the dependency on androidx.legacy:legacy-support-core-utils:1.0.0. b/128632612

API Changes

• A new Navigation.createNavigateOnClickListener(NavDirections) method has been added as an alternative to creating a click listener with a resource ID and Bundle. b/127631752
• FragmentNavigator.instantiateFragment is now deprecated. The default implementation now uses FragmentFactory to instantiate Fragments. b/119054429

Bug Fixes

• Navigation no longer sends a null Bundle when there are arguments attached to a destination, fixing an issue when using android:defaultValue="@null". b/128531879
• Safe Args now depends on KotlinPoet 1.1.0, fixing an issue with extremely long package names. b/123654948

Version 2.0.0

Version 2.0.0

March 14, 2019

Navigation 2.0.0 is released with no changes from 2.0.0-rc02.

Version 2.0.0-rc02

March 6, 2019

Navigation 2.0.0-rc02 provides new artifacts with the androidx.navigation group ID and changes its dependencies to the AndroidX equivalents.

The behavior of 2.0.0-rc02 is identical to behavior to Navigation 1.0.0-rc02 and no changes to your code should be required to update from 1.0.0-rc02 besides updating your dependencies to match the new dependencies.

Your project must have migrated to AndroidX to use 2.X releases of Navigation. Navigation 1.0 stable will be the last release using the Support Library dependencies; all future development beyond 1.0 will be based on AndroidX and build upon the 2.0 stable release.

Pre-AndroidX Dependencies

For the pre-AndroidX versions of Navigation, include these dependencies:

dependencies {
    def nav_version = "1.0.0"

    implementation "android.arch.navigation:navigation-fragment:$nav_version" // For Kotlin use navigation-fragment-ktx
    implementation "android.arch.navigation:navigation-ui:$nav_version" // For Kotlin use navigation-ui-ktx
}

For Safe args, add the following classpath in your top level build.gradle file

buildscript {
    repositories {
        google()
    }
    dependencies {
        classpath "android.arch.navigation:navigation-safe-args-gradle-plugin:1.0.0"
    }
}

Version 1.0.0

Version 1.0.0

March 14, 2019

Navigation 1.0.0 is released with no changes from 1.0.0-rc02.

Version 1.0.0-rc02

February 26, 2019

This is the second release candidate for Navigation's 1.0.0 stable release. This release contains a number of bug fixes.

Bug Fixes

• Fixed an issue where popBackStack() would be ignored if the root graph did not have an ID b/126251695
• navigateUp() now correctly handles navigating back to your app's task when called after handling a deep link without FLAG_ACTIVITY_NEW_TASK b/126082008
• Fixed an issue with ActivityNavigator.applyPopAnimationsToPendingTransition not applying the correct pop exit animation b/126237567
• Kotlin code generated by Safe Args now properly escapes Kotlin keywords such as in and fun in the package name associated with the R class. b/126020455

Version 1.0.0-rc01

February 21, 2019

This is a release candidate for Navigation's 1.0.0 stable release. This release contains one bug fix.

Bug Fixes

• Fixed an issue when using Fragments and singleTop navigation operations b/124294805

Version 1.0.0-beta02

February 12, 2019

This release includes a number of minor improvements and important bug fixes.

New Features

• You can now use 0 as an android:defaultValue for reference arguments. b/124248602

Behavior changes

• Exact deep link matches are now prioritized over deep links with .* or argument matches. b/123969518

Bug Fixes

• popBackStack() and navigateUp now correctly return false when popping the last destination on the back stack, fixing a regression introduced in 1.0.0-beta01. b/123933201
• Navigation now correctly sets the ClassLoader during restoration of saved instance state, avoiding issues when using custom classes in Navigator saved state or in arguments sent to a NavDestination. b/123893858
• Safe Args generated NavArgs classes no longer crash when restoring a Parcelable[] argument from saved instance state. b/123963545
• Safe Args now properly cleans up unnecessary generated Kotlin classes. b/124120883

Version 1.0.0-beta01

February 4, 2019

This is the first beta release of Navigation; moving forward, the Navigation API is expected to stay stable until the next version unless there is a critical problem. This release contains some bug fixes and behavior changes.

Behavior changes

• Navigation now ensures that argument default values are treated identically at runtime and through Safe Args. As a consequence, only arguments with an app:argType="reference" can have a default value point to another resource (for example, @color/colorPrimary). Attempting to use a reference default value with a different app:argType will result in an exception when parsing the navigation XML. b/123551990
• Safe Args now depends on Android Gradle Plugin 3.3.0 aosp/888413
• Safe Args now depends on Kotlin 1.3.20 aosp/888414

Bug Fixes

• Safe Args can now be used in library and feature modules on all versions of the Android Gradle Plugin. b/121304903
• Fixed a regression that would cause a single popBackStack() operation to pop all copies of a destination off the top of the back stack, rather than just a single destination at a time. b/123552990
• Fixed an issue where the FragmentNavigator state would desynchronize with the NavController's state, causing an IllegalStateException when attempting to restore the back stack. b/123803044
• Fixed an issue where the NavigationUI handled back arrow would not appear when using ProGuard with obfuscation. b/123449431
• The code generated by Safe Args now properly handles using an app:argType pointing to a static inner class in the format .OuterClass$InnerClass. b/123736741
• The Java code generated by Safe Args now properly handles global actions and deeply nested destinations. b/123347762

Version 1.0.0-alpha11

January 23, 2019

This is a hotfix release of 1.0.0-alpha10 that fixes an issue with Safe Args.

Bug Fixes

• Fixes an issue where Safe Args would fail to import the Directions class associated with global actions. b/123307342

Version 1.0.0-alpha10

January 23, 2019

Known Issues

• Safe Args fails to import the Directions class associated with global actions. b/123307342

This release contains breaking API changes; please see the Breaking Changes section below.

New Features

• Kotlin users can now use the by navArgs() property delegate to lazily get a reference to a Safe Args generated NavArgs class in an Activity or Fragment. b/122603367
• Safe Args now allows you to generate Kotlin code by applying the androidx.navigation.safeargs.kotlin plugin. The Kotlin code is built specifically for Kotlin only modules, using default arguments and immutable classes over the builder pattern that is still available via the previous androidx.navigation.safeargs plugin. b/110263087

Behavior Changes

• Matching deep links are now biased towards the deep link that has the most matching arguments. b/118393029
• Calling setGraph() on a NavController will now reset the back stack. b/111450672
• Unknown deep links no longer throw an IllegalStateException, but are ignored, fixing issues with nested or multiple NavHostFragments. b/121340440

Breaking Changes

• The NavOptions.applyPopAnimationsToPendingTransition() method for applying pop animations to an Activity has been moved to ActivityNavigator. b/122413117
• Safe Args now avoids duplicating identical classes for actions without arguments. The return type for no argument methods in generated NavDirections classes is now NavDirections. b/123233147
• Safe Args generated Directions classes no longer have a public constructor - you should only be interacting with the generated static methods. b/123031660
• Safe Args generated NavDirections classes no longer have a public constructor - they should only be generated via the static methods in the generated Directions classes. b/122963206
• The returned Bundle from NavDirections' getArguments() is now marked as @NonNull rather than @Nullable. b/123243957

Bug Fixes

• NavDeepLinkBuilder now correctly handles multiple simultaneous PendingIntents to the same destination by using the arguments you pass in to determine the uniqueness. b/120042732
• NavController now correctly handles popBackStack() operations when using a nested NavHostFragment or other child Fragments with a back stack. b/122770335
• NavigationUI now correctly sets the content description of the Up button. b/120395362
• Safe Args generated Directions classes now correctly handle global actions that have the same id as an action on a destination. b/122962504
• Safe Args generated NavDirections classes now correctly have equal hashCode() values when equals() would return true. b/123043662
• FragmentNavigator now throws a better error message if you attempt to do custom FragmentTransactions on the NavHostFragment's FragmentManager. You should always use getChildFragmentManager(). b/112927148

Version 1.0.0-alpha09

December 18, 2018

This release contains breaking API changes; please see the Breaking Changes section below.

We have chosen not to continue development of the android.arch.navigation:navigation-testing artifact. While it has proven helpful for internal testing of NavController, we strongly recommend alternate testing strategies, such as mocking the NavController instance in order to verify that the correct navigate() calls are being done. This approach is discussed in detail in the Single Activity talk at AndroidDevSummit 2018 and we'll be working on additional documentation specifically around testing with Navigation.

New Features

• MenuItems with menuCategory="secondary" will no longer pop the back stack when used with NavigationUI methods. b/120104424
• AppBarConfiguration now allows you to set a fallback OnNavigateUpListener instance which will be called when navController.navigateUp() returns false. b/79993862 b/120690961

Breaking Changes

• When using an <argument> with an argType="reference", Navigation no longer parses the reference, instead providing the raw resource ID itself. b/111736515
• onNavDestinationSelected() now pops back to the start destination of your navigation graph by default, making them consistent with the setup methods. Add menuCategory="secondary" to your MenuItem to avoid popping the back stack. aosp/852869
• The fromBundle() methods of generated Args classes now take a non-null Bundle instead of a nullable Bundle aosp/845616

Bug Fixes

• Arguments are now properly parsed from deep links as the correct argType instead of always as strings b/110273284
• Navigation now correctly exports its public resources b/121059552
• Safe Args is now compatible with Android Gradle Plugin 3.4 Canary 4 and higher b/119662045

Version 1.0.0-alpha08

December 6, 2018

This release contains breaking API changes; please see the Breaking Changes section below.

New Features

• Destination labels, when used with NavigationUI methods, will now automatically replace {argName} instances in your android:label with the correct argument b/80267266
• Navigation now depends on Support Library 28.0.0 b/120293333

Breaking Changes

• OnNavigatedListener has been renamed to OnDestinationChangedListener b/118670572
• OnDestinationChangedListener now also passes the Bundle of arguments aosp/837142
• The app:clearTask and app:launchDocument attributes and their associated methods have been removed. Use app:popUpTo with the root of your graph to remove all destinations from your back stack. b/119628354
• ActivityNavigator.Extras now uses a Builder pattern and adds the ability to set any Intent.FLAG_ACTIVITY_ flags aosp/828140
• NavController.onHandleDeepLink has been renamed to handleDeepLink aosp/836063
• Many classes and methods not meant for subclassing, such as NavOptions, NavInflater, NavDeepLinkBuilder, and AppBarConfiguration, have been made final aosp/835681
• The deprecated NavHostFragment.setGraph() method has been removed aosp/835684
• The deprecated NavigationUI.navigateUp(DrawerLayout, NavController) method has been removed. aosp/835684
• Fragment creation has been moved to FragmentNavigator, making it easier to delegate Fragment creation to a FragmentFactory. b/119054429
• The constructor for NavGraphNavigator no longer takes a Context aosp/835340
• NavigatorProvider is now a class, rather than an interface. The NavigatorProvider returned by getNavigatorProvider() has not changed its functionality. aosp/830660
• NavDestination.navigate() has been removed. Call navigate() on the Navigator instead. aosp/830663
• Significant refactoring of Navigator, removing the need for OnNavigatorNavigatedListener and instead having navigate return the NavDestination that was navigated to.
• Navigator instances can no longer send pop events to the NavController. Consider using a OnBackPressedCallback to intercept back button presses and call navController.popBackStack(). aosp/833716

Bug Fixes

• popUpTo now works consistently when the destination is a <navigation> element b/116831650
• Fixed a number of bugs that resulted in an IllegalArgumentException when using nested graphs b/118713731 b/113611083 b/113346925 b/113305559
• The dataPattern attribute of <activity> destinations will now populate arguments from non-String arguments by calling toString() b/120161365

Safe Args

• Safe Args supports Serializable objects, including Enum values. Enum types can set a default value by using the enum literal without the class name (e.g. app:defaultValue="READ") b/111316353
• Safe Args supports arrays of all supported types b/111487504
• Safe Args now ignores subfolders of resource directories b/117893516
• Safe Args adds @Override annotations where appropriate b/117145301

Version 1.0.0-alpha07

October 29, 2018

New Features

• A new AppBarConfiguration class allows you to customize which destinations are considered top-level destinations. See the updated documentation for details. b/117333663
• You can now pass arguments to the start destination of your graph b/110300470
• Deep links now support custom schemes with periods, hyphens, and plus signs. b/112806402

Breaking Changes

• The navigation-testing-ktx module has been folded into the navigation-testing artifact and will no longer be published.
• The navigation-testing artifact now has a dependency on the Kotlin standard library. The API has been changed to be more consistent with Kotlin conventions, but you can continue to use it for tests written in Java.
• Metadata manifest registered navigation graphs are no longer supported. b/118355937
• Actions can no longer be attached to <activity> destinations. aosp/785539

Bug Fixes

• Deep links now correctly parse query parameters. b/110057514
• Activity destinations now correctly apply all enter and exit animations. b/117145284
• Fixed crash that occurs after configuration changes when using custom Navigators. b/110763345

Safe Args

• Safe args now have a fixed dependency on Android Gradle Plugin 3.2.1. b/113167627
• Directions can now be generated for inner classes. b/117407555
• Fixed an issue with generating Directions to an <include> graph. b/116542123

Version 1.0.0-alpha06

September 20, 2018

New Features

• Shared Element Transitions for Fragment and Activity destinations are now supported b/79665225. For more information, see Implement navigation with the Navigation Architecture Component
• Selecting an item in NavigationView will now close any containing bottom sheet b/112158843

API Changes

• Breaking Change: The Navigator navigate() method now takes a Navigator.Extras parameter.
• NavController's getGraph() method is now NonNull b/112243286

Bug Fixes

• NavigationUI.setupWithNavController() no longer leaks views if used with views from individual destinations b/111961977
• Navigator onSaveState() is now only called once b/112627079

Safe Args

• Navigation destination Directions classes now extend their parent's Directions class if it exists b/79871405
• Directions and Args classes now have a useful toString() implementation b/111843389

Version 1.0.0-alpha05

August 10, 2018

Bug Fixes

• Fix a bug which cause incorrect backstack behavior. b/111907708
• Fix a bug in equals() of Generated Args classes. b/111450897
• Fix a build failure in Safe Args. b/109409713
• Fix a conversion from resource identifiers to java names b/111602491
• Fix error messages about nullability in Safe Args plugin.
• Add missing nullability annotations.

Version 1.0.0-alpha04

July 19, 2018

Navigation 1.0.0-alpha04 and the associated Safe Args gradle plugin contains a number of API changes, behavior changes, and bug fixes.

API / Behavior Changes

• NavHostFragment will always set the current Fragment as the primary navigation fragment, ensuring that child fragment managers are popped before the outer NavController is popped b/111345778

Safe Args

• Breaking Change: app:type has been changed to app:argType to avoid conflicts with other libraries such as ConstraintLayout 2.0.0-alpha1 b/111110548
• Error messages from Safe Args are now clickable b/111534438
• Args classes now confirms that NonNull attributes are actually not null b/111451769
• Additional NonNull annotations have been added to NavDirections and Args generated classes b/111455455 b/111455456

Bug Fixes

• Fixed an issue with the system back button after deep linking to a fragment destination b/111515685

Version 1.0.0-alpha03

July 12, 2018

Navigation 1.0.0-alpha03 and the associated Safe Args gradle plugin contains a number of API changes, behavior changes, and bug fixes.

API / Behavior Changes

• A NavigationUI.setupWithNavController method for Toolbar has been added b/109868820
• A NavigationUI.setupWithNavController method for CollapsingToolbarLayout has been added b/110887183
• popBackStack() now returns false when the back stack is empty or when the given destination ID is not in the back stack b/110893637
• FragmentNavigator now ignores navigation operations after FragmentManager has saved state, avoiding “Can not perform this action after onSaveInstanceState” exceptions b/110987825

Safe Args

• Breaking Change: Non-alphanumeric characters in action and argument names will be replaced by camel casing in the respective NavDirections method names
  • E.g. DemoController.index will become setDemoControllerIndex b/79995048
  • E.g. action_show_settings will become actionShowSettings b/79642240
• Breaking Change: Arguments are now considered non-null by default. To allow null values on string and parcelable arguments, add app:nullable="true" b/79642307
• You can now use app:type="long" with defaultValues in the form of “123L” b/79563966
• Parcelable arguments are now supported, using a fully qualified class name for app:type. The only default value supported is "@null" b/79563966
• Args classes now implement equals() and hashCode() b/79642246
• The Safe Args plugin can now be applied to library projects b/80036553
• The Safe Args plugin can now be applied to feature projects b/110011752

Bug Fixes

• Fixed issues when navigating during Fragment lifecycle methods b/109916080
• Fixed issues when navigating through nested graphs multiple times b/110178671
• Fixed issues when using setPopUpTo with the first destination in the graph b/109909461
• Fixed issue where all app:defaultValue values were being passed as Strings b/110710788
• aapt2 bundled with Android Gradle Plugin 3.2 Beta 01 now adds keep rules for every android:name attribute in Navigation XML files b/79874119
• Fixed memory leak when replacing the default FragmentNavigator b/110900142

Version 1.0.0-alpha02

June 7, 2018

Behavior Changes

• FragmentNavigator now uses setReorderingAllowed(true). b/109826220

• Navigation now URLDecodes arguments parsed from deep links URLs. b/79982454

Bug Fixes

• Fixed an IllegalStateException when calling navigate from Fragment lifecycle methods. b/79632233

• Navigation now depends on Support Library 27.1.1 to fix flickering when using animations. b/80160903

• Fixed an IllegalArgumentException when using defaultNavHost="true" as a child fragment. b/79656847

• Fixed a StackOverflowError when using NavDeepLinkBuilder. b/109653065

• Fixed an IllegalArgumentException when navigating back to a nested graph. b/80453447

• Fixed an issue with overlapping Fragments when using launchSingleTop. b/79407969

• Navigation now builds the correct synthetic back stack for nested graphs. b/79734195

• NavigationUI will now highlight the correct item when using a nested graph as a MenuItem. b/109675998

API Changes

• The clearTask attribute for actions and the associated API in NavOptions has been deprecated. b/80338878

• The launchDocument attribute for actions and the associated API in NavOptions has been deprecated. b/109806636

Version 1.0.0-alpha01

May 8, 2018

Navigation provides a framework for building in-app navigation. This initial release is 1.0.0-alpha01.