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.

FirebaseOptions

class FirebaseOptions

Configurable Firebase options.

Summary

Nested types
`class FirebaseOptions.Builder` Builder for constructing FirebaseOptions.

Public functions
`Boolean`	`equals(o: Any!)`
`java-static FirebaseOptions?`	`fromResource(context: Context)` Creates a new `FirebaseOptions` instance that is populated from string resources.
`Int`	`hashCode()`
`String!`	`toString()`

Public properties
`String!`	`apiKey`
`String!`	`applicationId`
`String!`	`databaseUrl`
`String!`	`gaTrackingId`
`String!`	`gcmSenderId`
`String!`	`projectId`
`String!`	`storageBucket`

Public functions

equals

fun equals(o: Any!): Boolean

fromResource

java-static fun fromResource(context: Context): FirebaseOptions?

Creates a new FirebaseOptions instance that is populated from string resources.

Returns
`FirebaseOptions?`	The populated options or null if applicationId is missing from resources.

hashCode

fun hashCode(): Int

toString

fun toString(): String!

Public properties

apiKey

val apiKey: String!

applicationId

val applicationId: String!

databaseUrl

val databaseUrl: String!

gaTrackingId

val gaTrackingId: String!

gcmSenderId

val gcmSenderId: String!

projectId

val projectId: String!

storageBucket

val storageBucket: String!

FirebaseOptions

Summary

Nested types

Public functions

Public properties

Public functions

equals

fromResource

hashCode

toString

Public properties

apiKey

applicationId

databaseUrl

gaTrackingId

gcmSenderId

projectId

storageBucket