NavDestination

arguments

@NonNull
public final @NonNull Map<@NonNull String, @NonNull NavArgument> arguments

The arguments supported by this destination. Returns a read-only map of argument names to NavArgument objects that can be used to check the type, default value and nullability of the argument.

To add and remove arguments for this NavDestination use addArgument and removeArgument.

id

@NonNull
public final int id

The destination's unique ID. This should be an ID resource generated by the Android resource system.

label

@Nullable
public final @Nullable CharSequence label

The descriptive label of this destination.

navigatorName

@NonNull
public final @NonNull String navigatorName

The name associated with this destination's Navigator.

parent

@Nullable
public final @Nullable NavGraph parent

Gets the NavGraph that contains this destination. This will be set when a destination is added to a NavGraph via NavGraph.addDestination.

route

@Nullable
public final @Nullable String route

The destination's unique route. Setting this will also update the id of the destinations so custom destination ids should only be set after setting the route.

NavDestination

public final NavDestination(@NonNull Navigator<@NonNull NavDestination> navigator)

NavDestinations should be created via Navigator.createDestination.

This constructor requires that the given Navigator has a Navigator.Name annotation.

NavDestination

public final NavDestination(@NonNull String navigatorName)

addArgument

@NonNull
public final void addArgument(@NonNull String argumentName, @NonNull NavArgument argument)

Sets an argument type for an argument name

addDeepLink

@NonNull
public final void addDeepLink(@NonNull String uriPattern)

Add a deep link to this destination. Matching Uris sent to NavController.handleDeepLink or NavController.navigate will trigger navigating to this destination.

In addition to a direct Uri match, the following features are supported:

Uris without a scheme are assumed as http and https. For example, www.example.com will match http://www.example.com and https://www.example.com. Placeholders in the form of {placeholder_name} matches 1 or more characters. The String value of the placeholder will be available in the arguments Bundle with a key of the same name. For example, http://www.example.com/users/{id} will match http://www.example.com/users/4. The .* wildcard can be used to match 0 or more characters.

These Uris can be declared in your navigation XML files by adding one or more <deepLink app:uri="uriPattern" /> elements as a child to your destination.

Deep links added in navigation XML files will automatically replace instances of ${applicationId} with the applicationId of your app. Programmatically added deep links should use Context.getPackageName directly when constructing the uriPattern.

addDeepLink

@NonNull
public final void addDeepLink(@NonNull NavDeepLink navDeepLink)

Add a deep link to this destination. Uris that match the given NavDeepLink uri sent to NavController.handleDeepLink or NavController.navigate will trigger navigating to this destination.

In addition to a direct Uri match, the following features are supported:

Uris without a scheme are assumed as http and https. For example, www.example.com will match http://www.example.com and https://www.example.com. Placeholders in the form of {placeholder_name} matches 1 or more characters. The String value of the placeholder will be available in the arguments Bundle with a key of the same name. For example, http://www.example.com/users/{id} will match http://www.example.com/users/4. The .* wildcard can be used to match 0 or more characters.

These Uris can be declared in your navigation XML files by adding one or more <deepLink app:uri="uriPattern" /> elements as a child to your destination.

Custom actions and mimetypes are also supported by NavDeepLink and can be declared in your navigation XML files by adding <app:action="android.intent.action.SOME_ACTION" /> or <app:mimetype="type/subtype" /> as part of your deepLink declaration.

Deep link Uris, actions, and mimetypes added in navigation XML files will automatically replace instances of ${applicationId} with the applicationId of your app. Programmatically added deep links should use Context.getPackageName directly when constructing the uriPattern.

When matching deep links for calls to NavController.handleDeepLink or NavController.navigate the order of precedence is as follows: the deep link with the most matching arguments will be chosen, followed by the deep link with a matching action, followed by the best matching mimeType (e.i. when matching mimeType image/jpg: image/ * *\/jpg *\/ *).

equals

@NonNull
public boolean equals(@Nullable Object other)

getAction

@Nullable
public final NavAction getAction(@IdRes int id)

Returns the NavAction for the given action ID. This will recursively check the getParent of this destination if the action destination is not found in this destination.

hasDeepLink

@NonNull
public boolean hasDeepLink(@NonNull Uri deepLink)

Checks the given deep link Uri, and determines whether it matches a Uri pattern added to the destination by a call to addDeepLink . It returns true if the deep link is a valid match, and false otherwise.

This should be called prior to NavController.navigate to ensure the deep link can be navigated to.

hasDeepLink

@NonNull
public boolean hasDeepLink(@NonNull NavDeepLinkRequest deepLinkRequest)

Checks the given NavDeepLinkRequest, and determines whether it matches a NavDeepLink added to the destination by a call to addDeepLink. It returns true if the request is a valid match, and false otherwise.

This should be called prior to NavController.navigate to ensure the deep link can be navigated to.

hashCode

@NonNull
public int hashCode()

onInflate

@CallSuper
@NonNull
public @CallSuper void onInflate(@NonNull Context context, @NonNull AttributeSet attrs)

Called when inflating a destination from a resource.

putAction

@NonNull
public final void putAction(@IdRes int actionId, @IdRes int destId)

Creates a NavAction for the given destId and associates it with the actionId.

putAction

@NonNull
public final void putAction(@IdRes int actionId, @NonNull NavAction action)

Sets the NavAction destination for an action ID.