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public static interface VoiceInteractionSession.VisibleActivityCallback

android.service.voice.VoiceInteractionSession.VisibleActivityCallback

Callback interface for receiving visible activity changes used for assistant usage.

Public methods
`default void`	`onInvisible(VoiceInteractionSession.ActivityId activityId)` Callback to inform that a visible activity has gone.
`default void`	`onVisible(VisibleActivityInfo activityInfo)` Callback to inform that an activity has become visible.

public void onInvisible (VoiceInteractionSession.ActivityId activityId)

Callback to inform that a visible activity has gone.

Parameters
`activityId`	`VoiceInteractionSession.ActivityId`: This value cannot be `null`.

public void onVisible (VisibleActivityInfo activityInfo)

Callback to inform that an activity has become visible.

Parameters
`activityInfo`	`VisibleActivityInfo`: This value cannot be `null`.