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.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-21 UTC."],[],[],null,["# com.google.firebase\n===================\n\nClasses\n-------\n\n|-----------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------|\n| [FirebaseApp](/docs/reference/kotlin/com/google/firebase/FirebaseApp) | The entry point of Firebase SDKs. |\n| [FirebaseOptions](/docs/reference/kotlin/com/google/firebase/FirebaseOptions) | Configurable Firebase options. |\n| [FirebaseOptions.Builder](/docs/reference/kotlin/com/google/firebase/FirebaseOptions.Builder) | Builder for constructing FirebaseOptions. |\n| [Timestamp](/docs/reference/kotlin/com/google/firebase/Timestamp) | A Timestamp represents a point in time independent of any time zone or calendar. |\n\nExceptions\n----------\n\n|-----------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------|\n| [FirebaseNetworkException](/docs/reference/kotlin/com/google/firebase/FirebaseNetworkException) | Exception thrown when a request to a Firebase service has failed due to a network error. |\n| [FirebaseTooManyRequestsException](/docs/reference/kotlin/com/google/firebase/FirebaseTooManyRequestsException) | Exception thrown when a request to a Firebase service has been blocked due to having received too many consecutive requests from the same device. |\n\nObjects\n-------\n\n|-----------------------------------------------------------------|-------------------------------------------------------|\n| [Firebase](/docs/reference/kotlin/com/google/firebase/Firebase) | Single access point to all firebase SDKs from Kotlin. |\n\nExtension functions summary\n---------------------------\n\n|--------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| [FirebaseApp](/docs/reference/kotlin/com/google/firebase/FirebaseApp) | [Firebase](/docs/reference/kotlin/com/google/firebase/Firebase)`.`[app](/docs/reference/kotlin/com/google/firebase/package-summary#(com.google.firebase.Firebase).app(kotlin.String))`(name: `[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`)` Returns a named firebase app instance. |\n| [FirebaseApp](/docs/reference/kotlin/com/google/firebase/FirebaseApp) | [Firebase](/docs/reference/kotlin/com/google/firebase/Firebase)`.`[initialize](/docs/reference/kotlin/com/google/firebase/package-summary#(com.google.firebase.Firebase).initialize(android.content.Context,com.google.firebase.FirebaseOptions,kotlin.String))`(` ` context: `[Context](https://developer.android.com/reference/kotlin/android/content/Context.html)`,` ` options: `[FirebaseOptions](/docs/reference/kotlin/com/google/firebase/FirebaseOptions)`,` ` name: `[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) `)` Initializes and returns a FirebaseApp. |\n| [FirebaseApp](/docs/reference/kotlin/com/google/firebase/FirebaseApp) | [Firebase](/docs/reference/kotlin/com/google/firebase/Firebase)`.`[initialize](/docs/reference/kotlin/com/google/firebase/package-summary#(com.google.firebase.Firebase).initialize(android.content.Context,com.google.firebase.FirebaseOptions))`(context: `[Context](https://developer.android.com/reference/kotlin/android/content/Context.html)`, options: `[FirebaseOptions](/docs/reference/kotlin/com/google/firebase/FirebaseOptions)`)` Initializes and returns a FirebaseApp. |\n| [FirebaseApp](/docs/reference/kotlin/com/google/firebase/FirebaseApp)`?` | [Firebase](/docs/reference/kotlin/com/google/firebase/Firebase)`.`[initialize](/docs/reference/kotlin/com/google/firebase/package-summary#(com.google.firebase.Firebase).initialize(android.content.Context))`(context: `[Context](https://developer.android.com/reference/kotlin/android/content/Context.html)`)` Initializes and returns a FirebaseApp. |\n\nExtension properties summary\n----------------------------\n\n|-------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| [FirebaseApp](/docs/reference/kotlin/com/google/firebase/FirebaseApp) | [Firebase](/docs/reference/kotlin/com/google/firebase/Firebase)`.`[app](/docs/reference/kotlin/com/google/firebase/package-summary#(com.google.firebase.Firebase).app()) Returns the default firebase app instance. |\n| [FirebaseOptions](/docs/reference/kotlin/com/google/firebase/FirebaseOptions) | [Firebase](/docs/reference/kotlin/com/google/firebase/Firebase)`.`[options](/docs/reference/kotlin/com/google/firebase/package-summary#(com.google.firebase.Firebase).options()) Returns options of default FirebaseApp |\n\nExtension functions\n-------------------\n\n### app\n\n```\nfun Firebase.app(name: String): FirebaseApp\n```\n\nReturns a named firebase app instance. \n\n### initialize\n\n```\nfun Firebase.initialize(\n context: Context,\n options: FirebaseOptions,\n name: String\n): FirebaseApp\n```\n\nInitializes and returns a FirebaseApp. \n\n### initialize\n\n```\nfun Firebase.initialize(context: Context, options: FirebaseOptions): FirebaseApp\n```\n\nInitializes and returns a FirebaseApp. \n\n### initialize\n\n```\nfun Firebase.initialize(context: Context): FirebaseApp?\n```\n\nInitializes and returns a FirebaseApp.\n\nExtension properties\n--------------------\n\n### app\n\n```\nval Firebase.app: FirebaseApp\n```\n\nReturns the default firebase app instance. \n\n### options\n\n```\nval Firebase.options: FirebaseOptions\n```\n\nReturns options of default FirebaseApp"]]
