IMPORTANT: In July 2025, we stopped releasing new versions of KTX modules, and we removed the KTX libraries from the Firebase Android BoM (v34.0.0). If you use KTX APIs from the previously released KTX modules, we recommend that you migrate your app to use KTX APIs from the main modules instead. For details, see the FAQ about this initiative.

com.google.firebase.firestore

Annotations

`DocumentId`	Annotation used to mark a POJO property to be automatically populated with the document's ID when the POJO is created from a Cloud Firestore document (for example, via `toObject`).
`Exclude`	Marks a field as excluded from the database instance.
`IgnoreExtraProperties`	Properties that don't map to class fields are ignored when serializing to a class annotated with this annotation.
`PropertyName`	Marks a field to be renamed when serialized.
`ServerTimestamp`	Annotation used to mark a timestamp field to be populated with a server timestamp.
`ThrowOnExtraProperties`	Properties that don't map to class fields when serializing to a class annotated with this annotation cause an exception to be thrown.

Interfaces

`EventListener`	An interface for event listeners.
`ListenerRegistration`	Represents a listener that can be removed by calling `remove`.
`LocalCacheSettings`	Marker interface implemented by all supported cache settings.
`MemoryGarbageCollectorSettings`
`OnProgressListener`	A listener that is called periodically during execution of a `LoadBundleTask`.
`Transaction.Function`	An interface for providing code to be executed within a transaction context.
`WriteBatch.Function`	An interface for providing code to be executed within a `WriteBatch` context.

Classes

`AggregateField`	Represents an aggregation that can be performed by Firestore.
`AggregateField.AverageAggregateField`	Represents an "average" aggregation that can be performed by Firestore.
`AggregateField.CountAggregateField`	Represents a "count" aggregation that can be performed by Firestore.
`AggregateField.SumAggregateField`	Represents a "sum" aggregation that can be performed by Firestore.
`AggregateQuery`	A query that calculates aggregations over an underlying query.
`AggregateQuerySnapshot`	The results of executing an `AggregateQuery`.
`Blob`	Immutable class representing an array of bytes in Cloud Firestore.
`CollectionReference`	A `CollectionReference` can be used for adding documents, getting document references, and querying for documents (using the methods inherited from `Query`).
`DocumentChange`	A `DocumentChange` represents a change to the documents matching a query.
`DocumentReference`	A `DocumentReference` refers to a document location in a Cloud Firestore database and can be used to write, read, or listen to the location.
`DocumentSnapshot`	A `DocumentSnapshot` contains data read from a document in your Cloud Firestore database.
`FieldPath`	A `FieldPath` refers to a field in a document.
`FieldValue`	Sentinel values that can be used when writing document fields with `set()` or `update()`.
`Filter`	A `Filter` represents a restriction on one or more field values and can be used to refine the results of a `Query`.
`FirebaseFirestore`	Represents a Cloud Firestore database and is the entry point for all Cloud Firestore operations.
`FirebaseFirestoreSettings`	Settings used to configure a `FirebaseFirestore` instance.
`FirebaseFirestoreSettings.Builder`	A Builder for creating `FirebaseFirestoreSettings`.
`FirestoreKt`
`GeoPoint`	Immutable class representing a `GeoPoint` in Cloud Firestore
`LoadBundleTask`	Represents the task of loading a Firestore bundle.
`LoadBundleTaskProgress`	Represents a progress update or a final state from loading bundles.
`MemoryCacheSettings`	Configures the SDK to use a memory cache.
`MemoryCacheSettings.Builder`	A Builder for creating `MemoryCacheSettings` instance.
`MemoryEagerGcSettings`	Configures the SDK to use an eager garbage collector for memory cache.
`MemoryEagerGcSettings.Builder`
`MemoryLruGcSettings`	Configures the SDK to use a Least-Recently-Used garbage collector for memory cache.
`MemoryLruGcSettings.Builder`
`PersistentCacheIndexManager`	Persistent cache indexes can improve performance of local query execution.
`PersistentCacheSettings`	Configures the SDK to use a persistent cache.
`PersistentCacheSettings.Builder`	A Builder for creating `PersistentCacheSettings` instance.
`Query`	A `Query` which you can read or listen to.
`QueryDocumentSnapshot`	A `QueryDocumentSnapshot` contains data read from a document in your Cloud Firestore database as part of a query.
`QuerySnapshot`	A `QuerySnapshot` contains the results of a query.
`SetOptions`	An options object that configures the behavior of `set()` calls.
`SnapshotListenOptions`	An options object that configures the behavior of `addSnapshotListener()` calls.
`SnapshotListenOptions.Builder`	Builder for constructing `SnapshotListenOptions` instances.
`SnapshotMetadata`	Metadata about a snapshot, describing the state of the snapshot.
`Transaction`	A `Transaction` is passed to a Function to provide the methods to read and write data within the transaction context.
`TransactionOptions`	Options to customize transaction behavior for `runTransaction`.
`TransactionOptions.Builder`	A Builder for creating `TransactionOptions`.
`VectorValue`	Represent a vector type in Firestore documents.
`WriteBatch`	A write batch, used to perform multiple writes as a single atomic unit.

Enums

`AggregateSource`	The sources from which an `AggregateQuery` can retrieve its results.
`DocumentChange.Type`	An enumeration of snapshot diff types.
`DocumentSnapshot.ServerTimestampBehavior`	Controls the return value for server timestamps that have not yet been set to their final value.
`FirebaseFirestoreException.Code`	The set of Cloud Firestore status codes.
`ListenSource`	Configures the source option of `addSnapshotListener()` calls on `DocumentReference` and `Query`.
`LoadBundleTaskProgress.TaskState`	Represents the state of bundle loading tasks.
`MetadataChanges`	Indicates whether metadata-only changes (that is, only `DocumentSnapshot.getMetadata()` or `QuerySnapshot.getMetadata()` changed) should trigger snapshot events.
`Query.Direction`	An enum for the direction of a sort.
`Source`	Configures the behavior of `get()` calls on `DocumentReference` and `Query`.

Exceptions

FirebaseFirestoreException

A class of exceptions thrown by Cloud Firestore.