---
title: Android-SDK - 3.9.0
slug: feature-experimentation/release-notes/android-sdk-3-9-0
docTags: 
createdAt: 2026-08-06T15:30:19.885Z
---

## 3.9.0

February 9th, 2021

- Upgrade the android and get all tests passing [#356](https://github.com/optimizely/android-sdk/pull/356)
- Add a new set of decide apis [#352](https://github.com/optimizely/android-sdk/pull/352)
  The new `OptimizelyUserContext` class is instantiated with `createUserContext` and exposes the following APIs to get `OptimizelyDecision`:
- setAttribute
- decide
- decideAll
- decideForKeys
- trackEvent

Also related to java sdk release [here](https://github.com/optimizely/java-sdk/releases/tag/3.8.0).

- For details, refer to our documentation page: [Android SDK](docId\:c9ujHSMi58bPacUj9ApTQ).
- Remove erroneous error if project id and sdk key are null. [#358](https://github.com/optimizely/android-sdk/pull/358)

[https://github.com/optimizely/android-sdk/releases/tag/3.9.0](https://github.com/optimizely/android-sdk/releases/tag/3.9.0)