Scene

fun addSpatialCapabilitiesChangedListener(
    listener: Consumer<SpatialCapabilities>
): Unit

Adds the given Consumer as a listener to be invoked when this Session's current SpatialCapabilities change. Consumer#accept(SpatialCapabilities) will be invoked on the main thread.

fun addSpatialCapabilitiesChangedListener(
    callbackExecutor: Executor,
    listener: Consumer<SpatialCapabilities>
): Unit

Adds the given Consumer as a listener to be invoked when this Session's current SpatialCapabilities change. Consumer#accept(SpatialCapabilities) will be invoked on the given callbackExecutor, or the main thread if the callbackExecutor is null (default).

fun clearSpatialVisibilityChangedListener(): Unit

Releases the listener previously added by setSpatialVisibilityChangedListener.

open fun close(): Unit

Closes the SessionConnector. Called when the Session is destroyed.

fun <T : Entity> getEntitiesOfType(type: Class<T>): List<T>

Returns all Entitys of the given type or its subtypes.

open fun initialize(
    lifecycleManager: LifecycleManager,
    platformAdapter: JxrPlatformAdapter
): Unit

Initializes the SessionConnector.

fun removeSpatialCapabilitiesChangedListener(
    listener: Consumer<SpatialCapabilities>
): Unit

Releases the given Consumer from receiving updates when the Session's SpatialCapabilities change.

fun setFullSpaceMode(bundle: Bundle): Bundle

Sets the full space mode flag to the given android.os.Bundle.

The android.os.Bundle then could be used to launch an android.app.Activity with requesting to enter full space mode through android.app.Activity.startActivity. If there's a bundle used for customizing how the android.app.Activity should be started by android.app.ActivityOptions.toBundle or androidx.core.app.ActivityOptionsCompat.toBundle, it's suggested to use the bundle to call this method.

The flag will be ignored when no android.content.Intent.FLAG_ACTIVITY_NEW_TASK is set in the bundle, or it is not started from a focused Activity context.

This flag is also ignored when the android.window.PROPERTY_XR_ACTIVITY_START_MODE property is set to a value other than XR_ACTIVITY_START_MODE_UNDEFINED in the AndroidManifest.xml file for the activity being launched.

fun setFullSpaceModeWithEnvironmentInherited(bundle: Bundle): Bundle

Sets the inherit full space mode environvment flag to the given android.os.Bundle.

The android.os.Bundle then could be used to launch an android.app.Activity with requesting to enter full space mode while inherit the existing environment through android.app.Activity.startActivity. If there's a bundle used for customizing how the android.app.Activity should be started by android.app.ActivityOptions.toBundle or androidx.core.app.ActivityOptionsCompat.toBundle, it's suggested to use the bundle to call this method.

When launched, the activity will be in full space mode and also inherits the environment from the launching activity. If the inherited environment needs to be animated, the launching activity has to continue updating the environment even after the activity is put into the stopped state.

The flag will be ignored when no android.content.Intent.FLAG_ACTIVITY_NEW_TASK is set in the intent, or it is not started from a focused Activity context.

The flag will also be ignored when there is no environment to inherit or the activity has its own environment set already.

This flag is ignored too when the android.window.PROPERTY_XR_ACTIVITY_START_MODE property is set to a value other than XR_ACTIVITY_START_MODE_UNDEFINED in the AndroidManifest.xml file for the activity being launched.

For security reasons, Z testing for the new activity is disabled, and the activity is always drawn on top of the inherited environment. Because Z testing is disabled, the activity should not spatialize itself.

fun setPreferredAspectRatio(activity: Activity, preferredRatio: Float): Unit

Sets a preferred main panel aspect ratio for home space mode.

The ratio is only applied to the activity. If the activity launches another activity in the same task, the ratio is not applied to the new activity. Also, while the activity is in full space mode, the preference is temporarily removed.

If the activity's current aspect ratio differs from the preferredRatio, the panel is automatically resized. This resizing preserves the panel's area. To avoid runtime resizing, consider specifying the desired aspect ratio in your AndroidManifest.xml. This ensures your activity launches with the preferred aspect ratio from the start.

fun setSpatialVisibilityChangedListener(
    listener: Consumer<SpatialVisibility>
): Unit

Sets the listener to be invoked on the main thread executor when the spatial visibility of the rendered content of the entire scene (all entities, including children of anchors and activitySpace) changes within the user's field of view.

This API only checks if the bounds of the renderable content are within the user's field of view. It does not check if the rendered content is visible to the user. For example, if the user is looking straight ahead, and there's only a single invisible child entity (alpha = 0) in front of the user, this API will return SpatialVisibility.WITHIN_FOV even though the user cannot see anything.

There can only be one listener set at a time. If a new listener is set, the previous listener will be released.

fun setSpatialVisibilityChangedListener(
    callbackExecutor: Executor,
    listener: Consumer<SpatialVisibility>
): Unit

Sets the listener to be invoked when the spatial visibility of the rendered content of the entire scene (all entities, including children of anchors and activitySpace) changes within the user's field of view.

This API only checks if the bounds of the renderable content are within the user's field of view. It does not check if the rendered content is visible to the user. For example, if the user is looking straight ahead, and there's only a single invisible child entity (alpha = 0) in front of the user, this API will return SpatialVisibility.WITHIN_FOV even though the user cannot see anything.

The listener is invoked on the provided executor. If the app intends to modify the UI elements/views during the callback, the app should provide the thread executor that is appropriate for the UI operations. For example, if the app is using the main thread to render the UI, the app should provide the main thread (Looper.getMainLooper()) executor. If the app is using a separate thread to render the UI, the app should provide the executor for that thread.

There can only be one listener set at a time. If a new listener is set, the previous listener will be released.

lateinit var activitySpace: ActivitySpace

The ActivitySpace is a special entity that represents the space in which the application is launched. It is the default parent of all entities in the scene.

The ActivitySpace is created automatically when the Session is created.

lateinit var mainPanelEntity: PanelEntity

A spatialized PanelEntity associated with the "main window" for the Activity. When in HomeSpace mode, this is the application's "main window".

If called multiple times, this will return the same PanelEntity.

lateinit var perceptionSpace: PerceptionSpace

The PerceptionSpace represents the origin of the space in which the ARCore for XR API provides tracking info. The transformations provided by the PerceptionSpace are only valid for the call frame, as the transformation can be changed by the system at any time.

lateinit var spatialCapabilities: SpatialCapabilities

Returns the current SpatialCapabilities of the Session. The set of capabilities can change within a session. The returned object will not update if the capabilities change; this method should be called again to get the latest set of capabilities.

lateinit var spatialUser: SpatialUser

The SpatialUser contains information about the user.