```
@RequiresApi(api=28)
public interface StageRenderer
```
An interface to implement that can be used to build user interfaces. Implementing a StageRenderer provides all the necessary information about a Stage to create a complete UI.

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default void`	`onConnectionStateChanged(Stage stage, Stage.ConnectionState state, BroadcastException exception)`	The connection state of the associated `Stage` has changed.
`default void`	`onError(BroadcastException exception)`	Triggers whenever an error occurs
`default void`	`onParticipantJoined(Stage stage, ParticipantInfo participantInfo)`	A new participant has joined the Stage and started publishing.
`default void`	`onParticipantLeft(Stage stage, ParticipantInfo participantInfo)`	A new participant has left the Stage or stopped publishing.
`default void`	`onParticipantPublishStateChanged(Stage stage, ParticipantInfo participantInfo, Stage.PublishState publishState)`	The publish state of a participant has changed.
`default void`	`onParticipantSubscribeStateChanged(Stage stage, ParticipantInfo participantInfo, Stage.SubscribeState subscribeState)`	The subscribe state of a participant has changed.
`default void`	`onStreamsAdded(Stage stage, ParticipantInfo participantInfo, java.util.List<StageStream> streams)`	Triggers whenever a remote audio/video stream is added.
`default void`	`onStreamsMutedChanged(Stage stage, ParticipantInfo participantInfo, java.util.List<StageStream> streams)`	Triggers whenever a stream is muted, the stream could either be `LocalStageStream` or `StageStream`
`default void`	`onStreamsRemoved(Stage stage, ParticipantInfo participantInfo, java.util.List<StageStream> streams)`	Triggers whenever a remote audio/video stream is removed.

Method Detail

onError

default void onError(@NonNull
                     BroadcastException exception)

Triggers whenever an error occurs

Parameters:: exception - The error that occured

onConnectionStateChanged

default void onConnectionStateChanged(@NonNull
                                      Stage stage,
                                      @NonNull
                                      Stage.ConnectionState state,
                                      @Nullable
                                      BroadcastException exception)

The connection state of the associated Stage has changed.

Parameters:: stage - The Stage that had the connection state change.; state - The new connection state of the Stage.; exception - An error, if the state change was caused by an error.

onParticipantJoined

default void onParticipantJoined(@NonNull
                                 Stage stage,
                                 @NonNull
                                 ParticipantInfo participantInfo)

A new participant has joined the Stage and started publishing.

Parameters:: stage - The Stage that the participant joined and started publishing.; participantInfo - A description of the participant that joined and started publishing.

onParticipantLeft

default void onParticipantLeft(@NonNull
                               Stage stage,
                               @NonNull
                               ParticipantInfo participantInfo)

A new participant has left the Stage or stopped publishing.

Parameters:: stage - The Stage that the participant left or stopped publishing.; participantInfo - A description of the participant that left or stopped publishing.

onParticipantPublishStateChanged

default void onParticipantPublishStateChanged(@NonNull
                                              Stage stage,
                                              @NonNull
                                              ParticipantInfo participantInfo,
                                              @NonNull
                                              Stage.PublishState publishState)

The publish state of a participant has changed.

Parameters:: stage - The Stage associated with the participant that changed their publish state.; participantInfo - The participant that changed their publish state.; publishState - The new publish state.

onParticipantSubscribeStateChanged

default void onParticipantSubscribeStateChanged(@NonNull
                                                Stage stage,
                                                @NonNull
                                                ParticipantInfo participantInfo,
                                                @NonNull
                                                Stage.SubscribeState subscribeState)

The subscribe state of a participant has changed.

Parameters:: stage - The Stage associated with the participant that changed their subscribe state.; participantInfo - The participant that changed their subscribe state.; subscribeState - The new subscribe state.

onStreamsAdded

default void onStreamsAdded(@NonNull
                            Stage stage,
                            @NonNull
                            ParticipantInfo participantInfo,
                            @NonNull
                            java.util.List<StageStream> streams)

Triggers whenever a remote audio/video stream is added. This is the result of subscription state change

Parameters:: stage - The Stage associated with the added streams; participantInfo - The ParticipantInfo associated with the added streams.; streams - A list of added streams

onStreamsRemoved

default void onStreamsRemoved(@NonNull
                              Stage stage,
                              @NonNull
                              ParticipantInfo participantInfo,
                              @NonNull
                              java.util.List<StageStream> streams)

Triggers whenever a remote audio/video stream is removed. This could be caused by either remote participant is no longer publishing or network issue

Parameters:: stage - The Stage associated with the removed streams; participantInfo - The ParticipantInfo associated with the removed streams.; streams - A list of removed streams

onStreamsMutedChanged

default void onStreamsMutedChanged(@NonNull
                                   Stage stage,
                                   @NonNull
                                   ParticipantInfo participantInfo,
                                   @NonNull
                                   java.util.List<StageStream> streams)

Triggers whenever a stream is muted, the stream could either be LocalStageStream or StageStream

Parameters:: stage - The Stage associated with the updated streams; participantInfo - The ParticipantInfo associated with the updated streams.; streams - A list of streams that have had their mute state changed

Interface StageRenderer