> ## Documentation Index
> Fetch the complete documentation index at: https://docs.larksh.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Android SDK

> Use the Firebase Android SDK with Lark

Point your Firebase Android SDK at Lark by passing your Lark URL to `FirebaseDatabase.getInstance()`. Everything else (listeners, writes, queries) works without changes.

## Setup

Add the Realtime Database dependency to your module's `build.gradle`:

```groovy theme={null}
dependencies {
    implementation 'com.google.firebase:firebase-database'
}
```

## Connect to Lark

Pass your Lark URL when getting the database instance:

<CodeGroup>
  ```kotlin Kotlin theme={null}
  import com.google.firebase.database.FirebaseDatabase

  // Change this from https://PROJECT_ID.firebaseio.com
  val database = FirebaseDatabase.getInstance("https://your-lark-project-id.larkdb.net")
  val myRef = database.getReference("players/alice")
  ```

  ```java Java theme={null}
  import com.google.firebase.database.FirebaseDatabase;
  import com.google.firebase.database.DatabaseReference;

  // Change this from https://PROJECT_ID.firebaseio.com
  FirebaseDatabase database = FirebaseDatabase.getInstance("https://your-lark-project-id.larkdb.net");
  DatabaseReference myRef = database.getReference("players/alice");
  ```
</CodeGroup>

If your `google-services.json` already has the `databaseURL` field, you can update it there instead and use `FirebaseDatabase.getInstance()` without arguments.

## Database routing

If your Firebase app stores many independent data silos under path prefixes (game rooms, workspaces, etc.), see [Database routing](/firebase/database-routing) for options on splitting them into separate Lark databases.