Added in API level 33
Also in T Extensions 3

ObserverCallback

Kotlin |Java

public interface ObserverCallback

android.app.appsearch.observer.ObserverCallback

An interface which apps can implement to subscribe to notifications of changes to AppSearch data.

Summary

Public methods
`abstract void`	`onDocumentChanged(DocumentChangeInfo changeInfo)` Callback to trigger after document changes (documents added, updated or removed).
`abstract void`	`onSchemaChanged(SchemaChangeInfo changeInfo)` Callback to trigger after schema changes (schema type added, updated or removed).

public abstract void onDocumentChanged (DocumentChangeInfo changeInfo)

Callback to trigger after document changes (documents added, updated or removed).

Parameters
`changeInfo`	`DocumentChangeInfo`: Information about the nature of the change. This value cannot be `null`.

public abstract void onSchemaChanged (SchemaChangeInfo changeInfo)

Callback to trigger after schema changes (schema type added, updated or removed).

Parameters
`changeInfo`	`SchemaChangeInfo`: Information about the nature of the change. This value cannot be `null`.