--- description: Release notes and changelog for the RealtimeKit Android Core SDK. title: Android Core SDK image: https://developers.cloudflare.com/og-docs.png --- [Skip to content](#main-content) > Documentation Index > Fetch the complete documentation index at: https://developers.cloudflare.com/realtime/llms.txt > Use this file to discover all available pages before exploring further. # Android Core SDK Last updated Aug 31, 2026|Copy as Markdown| [View as Markdown](https://439c4358.previews.developers.cloudflare.com/realtime/realtimekit/release-notes/android-core/index.md)| [Agent setup](https://439c4358.previews.developers.cloudflare.com/agent-setup/) [Subscribe to RSS](https://439c4358.previews.developers.cloudflare.com/realtime/realtimekit/release-notes/android-core/index.xml) ## 2026-07-17 **RealtimeKit Android Core 3.1.0** **Enhancements** - Room joins are up to 25% faster under normal network conditions - Improved the initial quality of video received from mobile participants **Fixes** - Fixed a crash when switching between breakout rooms - When unmuting audio or video, the SDK now requests permission when the corresponding `RtkMeetingInfo.enableAudio` or `RtkMeetingInfo.enableVideo` field is `false`. The UI Kit component is no longer silently disabled. ## 2026-06-24 **RealtimeKit Android Core 3.0.0** **Breaking changes** - Plugins are no longer provided by the server. They must now be declared upfront on the client side by passing a `plugins` list to `RtkMeetingInfo`. Any plugin not declared at initialization will not be available in the meeting. ```kotlin val meetingInfo = RtkMeetingInfo( authToken = authToken, plugins = listOf( RtkClientPluginConfig( id = "whiteboard", // Must match the plugin ID used on Web for sync to work name = "Whiteboard", icon = "https://example.com/logo.png", url = "https://example.com", permissions = RtkClientPluginPermissions(canActivate = true, canDeactivate = true), ) ), ) ``` - Several internal properties have been removed from `RtkPlugin`: `baseURL`, `config`, `description`, `isPrivate`, and `staggered`. Use the new `icon` and `permissions` properties instead. - The two-argument `subscribe(key, (key, value) → Unit)` and `unsubscribe(key, (key, value) → Unit)` overloads on `RtkStore` have been removed. Use the single-argument callback variants introduced in 2.1.0. **Features** - **AI Transcription** — A new `RtkAi` class (exposed as `client.ai`) provides access to real-time transcripts. Implement `RtkAiEventListener` and register it with `addAiEventListener()` to receive `onTranscript(data: RtkTranscriptionData)` callbacks. A `transcriptionEnabled` permission is available on `MiscellaneousPermissions`. - **Connected Meetings (Breakout Rooms)** — A new `RtkConnectedMeetings` class (exposed as `client.connectedMeetings`) enables breakout room workflows. Register an `RtkConnectedMeetingsEventListener` to handle room transitions and state updates. See the [Breakout Rooms](https://developers.cloudflare.com/realtime/realtimekit/core/breakout-rooms/) documentation for a full guide. - **Chat: Edit and Delete** — Messages can now be edited and deleted. New methods on `RtkChat`: `editTextMessage()`, `editImageMessage()`, `editFileMessage()`, and `deleteMessage()`. `RtkChatEventListener` gains `onMessageEdited()` and `onMessageDeleted()` callbacks. `ChatMessage` now includes an `isEdited` flag. - **Chat: Fetch and Pagination** — New methods on `RtkChat` — `fetchPublicMessages()`, `fetchPrivateMessages()`, `fetchPinnedMessages()`, and `getMessages()` — allow fetching historical messages with cursor-based pagination via `FetchMessagesResult(messages, hasMore)`. - **Client-Declared Plugins** — Plugins are now configured entirely on the client via `RtkClientPluginConfig` and `RtkClientPluginPermissions`. `RtkPlugin` exposes the new `icon` and `permissions` properties accordingly. - **Targeted Broadcast Messages** — `RtkParticipants.broadcastMessage()` now accepts an optional `targetParticipantIds: List` parameter to send a message to a specific subset of participants. - **Nullable Store Values** — `RtkStore.set()` now accepts a nullable `value: Any?`, allowing keys to be cleared by setting them to `null`. - **Logging Control** — `RealtimeKitClient` gains `enableLogging(enabled: Boolean)` and `enableLogging(enabled: Boolean, minSeverity: LogSeverity)` to control SDK log output at runtime. - **Result\ Utility Type** — A new `sealed class Result` with `Success` and `Failure` variants is used consistently across new async APIs. **Fixes** - Improved reconnection handling to ensure media recovers gracefully in more scenarios - Improved simulcast tiers to broadcast at a wider range of qualities on higher tiers - Fixed some races in media handling causing mute/unmute operations to rarely result in a crash - Optimized API calls in the room join flow to speed up first join durations - Fixed file and image uploads in chat failing under some conditions ## 2026-05-08 **RealtimeKit Android Core 2.1.0** **Breaking changes** - `RtkParticipants.activeSpeaker` → `RtkParticipants.lastActiveSpeaker`. The old `activeSpeaker` property is deprecated and will be removed in a future release. - `RtkSelfParticipant.enableScreenShare()` → `enableScreenShare(onResult:)`. The old no-callback version is deprecated and will be removed in a future release. - `RtkSelfParticipant.disableScreenShare()` → `disableScreenShare(onResult:)`. The old no-callback version is deprecated and will be removed in a future release. - `RtkStore.subscribe(key, (key, value) → Unit)` → `subscribe(key, (value) → Unit)`. The old two-argument callback signature is deprecated but remains functional via a backward-compatible shim. - `RtkStore.unsubscribe(key, (key, value) → Unit)` → `unsubscribe(key, (value) → Unit)`. The old two-argument callback signature is deprecated but remains functional via a backward-compatible shim. **Features** - Added `RtkChat.pin()` and `RtkChat.unpin()` methods to pin and unpin chat messages - Added `RtkChat.getMessagesByUser()` to filter messages by sender and `RtkChat.getMessagesByType()` to filter messages by type - Added `SelfPermissions.canPinMessage()` to check whether the local participant has permission to pin messages **Fixes** - Fixed a memory leak in video rendering caused by `SurfaceViewRenderer` instances not being released - Fixed recording state getting stuck as "recording" when stopping a recording that was started by another participant - Fixed "ghost" participants appearing on the grid when a user was on the setup screen but had not yet joined the socket room - Fixed webinar host being invisible to other participants when joining late - Fixed recording bots and other hidden participants incorrectly appearing on the participant grid - Fixed waitlisted participants appearing in the participant list before being admitted to the meeting ## 2026-04-20 **RealtimeKit Android Core 2.0.0** **Breaking changes** - Removed Hive SFU support. Only the Cloudflare SFU is supported going forward. - The default base URI is now `realtime.cloudflare.com`. Calling `init()` with a `dyte.io` base domain now fails immediately with `MeetingError.InvalidBaseUrl` **Fixes** - Added compatibility with new backend plugins API field naming - Fixed a crash that could occur when accessing the socket controller before `init()` was called - Fixed auth token not being sent to the callstats collector endpoint - Removed custom ping-pong keepalive logic that was only required for the previous infrastructure ## 2026-03-06 **RealtimeKit Android Core 1.6.2** **Fixes** - Avoid crash when using Ktor versions 3.4.0 and above ## 2026-02-06 **RealtimeKit Android Core 1.6.1** **Fixes** - Fixed media issues when connection took longer to establish ## 2026-01-14 **RealtimeKit Android Core 1.6.0** **Fixes** - Improved grid transitions by activating consumers in batches for better performance - Moved consumer toggle requests off main thread to prevent UI blocking - Improved video rendering stability with better lifecycle management - Prevented race conditions by canceling reconnection attempts during initialization ## 2025-12-16 **RealtimeKit Android Core 1.5.7** **Fixes** - Fixed rare crash when toggling audio mute - Off-stage webinar hosts no longer show up on the grid ## 2025-12-12 **RealtimeKit Android Core 1.5.6** **Fixes** - Fixed deadlocks in webinar join and screenshare enable flows - Fixed an issue with camera not working when moving to settings screen and back - Fixed a rare crash in voice activity detection ## 2025-12-04 **RealtimeKit Android Core 1.5.5** **Fixes** - Fixed participant tiles not being removed properly when peers left the meeting ## 2025-11-06 **RealtimeKit Android Core 1.5.4** **Fixes** - Internal fixes to reduce telemetry verbosity ## 2025-10-23 **RealtimeKit Android Core 1.5.3** **Fixes** - Fixed a regression that caused self video to not render if meeting was joined with camera disabled ## 2025-10-23 **RealtimeKit Android Core 1.5.2** **Fixes** - Fixed unreliable grid behavior with improved refresh logic ## 2025-10-06 **RealtimeKit Android Core 1.5.1** **Fixes** - Internal fixes to resolve issues for Flutter platform ## 2025-09-23 **RealtimeKit Android Core 1.5.0** **Features** - Added `RtkSelfEventListener#onAudioDeviceChanged` method that is invoked when the current audio route is updated ## 2025-09-18 **RealtimeKit Android Core 1.4.1** **Fixes** - Speakerphone is now preferred over earpiece as the default audio output ## 2025-09-18 **RealtimeKit Android Core 1.4.0** **Breaking changes** - Updated `RtkSelfEventListener#onAudioDevicesUpdated` method to provide the list of available devices **Fixes** - Fixed not being able to route audio to Bluetooth devices ## 2025-09-12 **RealtimeKit Android Core 1.3.4** **Fixes** - Fixed a rare crash during meeting joins in poor network scenarios ## 2025-09-12 **RealtimeKit Android Core 1.3.3** **Fixes** - Fixed pinned peers not being removed from the stage when kicked - Media consumers are now created in parallel, which significantly improved the speed of when users start seeing other people's audio/video after joining a meeting - Native libraries are now 16KB aligned to comply with [Google Play requirements](https://android-developers.googleblog.com/2025/05/prepare-play-apps-for-devices-with-16kb-page-size.html) - Fixed "Ghost"/Invalid peers that would sometimes show up in long-running meetings - Fixed an issue in webinar meetings where the SDK would fail to produce media after being removed from the stage once ## 2025-08-13 **RealtimeKit Android Core 1.3.2** **Enhancements** - Fixed microphone not working when joining the stage in a webinar ## 2025-08-13 **RealtimeKit Android Core 1.3.1** **Enhancements** - Fixed a potential crash in poor network scenarios ## 2025-08-12 **RealtimeKit Android Core 1.3.0** **Features** - Added `RtkSelfParticipant#canJoinStage` and `RtkSelfParticipant#canRequestToJoinStage` APIs **Fixes** - Fixed viewer unable to join stage in a Livestream - Fixed user unable to see existing pinned participant after joining meeting ## 2025-08-05 **RealtimeKit Android Core 1.2.0** **Breaking changes** - Renamed `RtkLivestreamData.roomName` to `RtkLivestreamData.meetingId` to match existing API convention - Removed obsolete `WaitingRoomPermissions` abstraction — all the relevant functionality here is available through `HostPermissions` - VideoDevice gained a `cameraType: CameraType` parameter - `VideoDeviceType#displayName` is now deprecated, and it's recommended to call `VideoDevice#toString` instead to get user-facing names for individual `VideoDevice` instances - Existing APIs related to middlewares were removed and replaced with equivalent counterparts from WebRTC: `RtkSelfParticipant#addVideoMiddleware`, `RtkSelfParticipant#getVideoMiddlewares` and `RtkSelfParticipant#removeVideoMiddleware` were replaced with `RealtimeKitMeetingBuilder#setVideoProcessor` - `RtkVideoFrame` was removed in favor of WebRTC's own `VideoFrame` class, available as `realtimekit.org.webrtc.VideoFrame` **Features** - Reimplemented middlewares using WebRTC-native primitives to resolve intermittent crashes and other issues, check out the new [Video Processing](https://docs.realtime.cloudflare.com/android-core/video-processing/introduction) docs section to learn more - `VideoDevice` now properly labels multiple cameras based on their camera characteristics such as wide-angle and telephoto **Fixes** - Fixed screen share failing to stop - Silenced log spam from our callstats library ## 2025-07-02 **RealtimeKit Android Core 1.1.0** **Enhancements** - Meeting initialization ( `meeting.init()`) is now \~60% faster - Switched to an updated and **RTK** namespaced WebRTC - Improved Active speaker detection with the updated WebRTC ## 2025-06-20 **RealtimeKit Android Core 1.0.1** **Breaking changes** - Renamed RtkMessageType to ChatMessageType **Fixes** - Silenced logspam from audio activity reporter - Improved speed of joining calls - Auth tokens now automatically trim invalid spaces and newlines ## 2025-05-26 **RealtimeKit Android Core 1.0.0** **Breaking changes** - Removed deprecated `channelId` field from `TextMessage` - Moved listener types to their respective feature package - Moved public listeners to their respective feature packages - Renamed plugin add-remove listener methods for RtkPluginsEventListener - Moved chat extensions to the `chat` package - Moved `RtkParticipant` to the root package - Moved `RtkMeetingParticipant` to the root package - Moved `RtkPluginFile` to the plugins package - Moved middlewares to their own package - Moved `VideoScaleType` to top level `media` package - Dropped `Rtk` prefix from audio and video device types - Moved device types to the top level `media` package - Dropped `Rtk` prefix from polls types - Replaced all LiveStream references with Livestream - Moved `RtkMeetingParticipant` to root package - Stripped `Rtk` prefix from `RtkRecordingState` - Stripped `Rtk` prefix from chat message types - Removed deprecated RtkLivestream#roomName field - Moved `RtkMediaPermission` to media package and renamed to `MediaPermission` - Redistributed `feat` package members - Moved `StageStatus` class to stage package - Renamed all event listeners to be of the singular `*EventListener` form ## 2025-05-16 **RealtimeKit Android Core 0.2.1** **Fixes** - Internal fixes to release pipeline ## 2025-05-16 **RealtimeKit Android Core 0.2.0** **Fixes** - Added audio activity detection for active speaker signaling ## 2025-05-14 **RealtimeKit Android Core 0.1.0** **New APIs** - 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