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room = roomManager.join(roomOptions);
room.on(new RoomEvent() {
    public void onState(final Room room) {
        for (final Participant participant : room.getParticipants()) {
    ...

Flashphoner.init(this);

RoomManagerOptions roomManagerOptions = new RoomManagerOptions(mWcsUrlView.getText().toString(), mLoginView.getText().toString());

/**
  * RoomManager object is created with method createRoomManager().
  * Connection session is created when RoomManager object is created.
  */
roomManager = Flashphoner.createRoomManager(roomManagerOptions);

@Override
public void onConnected(final Connection connection) {
    runOnUiThread(new Runnable() {
        @Override
        public void run() {
            mConnectButton.setText(R.string.action_disconnect);
            mConnectButton.setTag(R.string.action_disconnect);
            mConnectButton.setEnabled(true);
            mConnectStatus.setText(connection.getStatus());
            mJoinButton.setEnabled(true);
        }
    });
}

RoomOptions roomOptions = new RoomOptions();
roomOptions.setName(mJoinRoomView.getText().toString());

/**
  * The participant joins a conference room with method RoomManager.join().
  * RoomOptions object is passed to the method.
  * Room object is created and returned by the method.
  */
room = roomManager.join(roomOptions);

@Override
public void onState(final Room room) {
    /**
      * After joining, Room object with data of the room is received.
      * Method Room.getParticipants() is used to check the number of already connected participants.
      * The method returns collection of Participant objects.
      * The collection size is determined, and, if the maximum allowed number (in this case, three) has already been reached, the user leaves the room with method Room.leave().
      */
    if (room.getParticipants().size() >= 3) {
        room.leave(null);
        runOnUiThread(
             new Runnable() {
                 @Override
                 public void run() {
                     mJoinStatus.setText("Room is full");
                     mJoinButton.setEnabled(true);
                 }
             }
        );
        return;
    }


    final StringBuffer chatState = new StringBuffer("participants: ");

    /**
      * Iterating through the collection of the other participants returned by method Room.getParticipants().
      * There is corresponding Participant object for each participant.
      */
    for (final Participant participant : room.getParticipants()) {
        /**
          * A player view is assigned to each of the other participants in the room.
          */
        final ParticipantView participantView = freeViews.poll();
        if (participantView != null) {
            chatState.append(participant.getName()).append(",");
            busyViews.put(participant.getName(), participantView);

            /**
              * Playback of the stream being published by the other participant is started with method Participant.play().
              * SurfaceViewRenderer to be used to display the video stream is passed when the method is called.
              */
            participant.play(participantView.surfaceViewRenderer);
            ...
        }
    }
    ...
}

case PUBLISH_REQUEST_CODE: {
    if (grantResults.length == 0 ||
           grantResults[0] != PackageManager.PERMISSION_GRANTED ||
           grantResults[1] != PackageManager.PERMISSION_GRANTED) {

        Log.i(TAG, "Permission has been denied by user");
    } else {
        mPublishButton.setEnabled(false);
        /**
          * Stream is created and published with method Room.publish().
          * SurfaceViewRenderer to be used to display video from the camera is passed to the method.
          */
        boolean record = mRecord.isChecked();
        StreamOptions streamOptions = new StreamOptions();
        streamOptions.setRecord(record);
        stream = room.publish(localRenderer, streamOptions);
        ...
        Log.i(TAG, "Permission has been granted by user");
    }
}

@Override
public void onJoined(final Participant participant) {
    /**
      * When a new participant joins the room, a player view is assigned to that participant.
      */
    final ParticipantView participantView = freeViews.poll();
    if (participantView != null) {
        runOnUiThread(
             new Runnable() {
                 @Override
                 public void run() {
                     participantView.login.setText(participant.getName());
                     addMessageHistory(participant.getName(), "joined");
                 }
             }
        );
        busyViews.put(participant.getName(), participantView);
    }
}

@Override
public void onPublished(final Participant participant) {
    /**
      * When one of the other participants starts publishing, playback of the stream published by that participant is started.
      */
    final ParticipantView participantView = busyViews.get(participant.getName());
    if (participantView != null) {
        participant.play(participantView.surfaceViewRenderer);
    }
}

@Override
public void onMessage(final Message message) {
/**
  * When one of the participants sends a text message, the received message is added to the messages log.
  */
    runOnUiThread(
        new Runnable() {
            @Override
            public void run() {
                addMessageHistory(message.getFrom(), message.getText());
            }
       });
}

    @Override
    public void onClick(View view) {
        if (mPublishButton.getTag() == null || Integer.valueOf(R.string.action_publish).equals(mPublishButton.getTag())) {
            ActivityCompat.requestPermissions(ConferenceActivity.this,
                  new String[]{Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA},
                  PUBLISH_REQUEST_CODE);
        } else {
            mPublishButton.setEnabled(false);
            /**
              * Stream is unpublished with method Room.unpublish().
              */
            room.unpublish();
        }
        View currentFocus = getCurrentFocus();
        if (currentFocus != null) {
            InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
            inputManager.hideSoftInputFromWindow(currentFocus.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
        }
    }
});

room.leave(new RestAppCommunicator.Handler() {
    @Override
    public void onAccepted(Data data) {
        runOnUiThread(action);
    }

    @Override
    public void onRejected(Data data) {
        runOnUiThread(action);
    }
});

mConnectButton.setEnabled(false);

/**
  * Connection to WCS server is closed with method RoomManager.disconnect().
  */
roomManager.disconnect();

/**
  * MuteAudio switch is used to mute/unmute audio of the published stream.
  * Audio is muted with method Stream.muteAudio() and unmuted with method Stream.unmuteAudio().
  */
mMuteAudio = (Switch) findViewById(R.id.mute_audio);
mMuteAudio.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        if (isChecked) {
            stream.muteAudio();
        } else {
            stream.unmuteAudio();
        }
    }
});

/**
  * MuteVideo switch is used to mute/unmute video of the published stream.
  * Video is muted with method Stream.muteVideo() and unmuted with method Stream.unmuteVideo().
  */
mMuteVideo = (Switch) findViewById(R.id.mute_video);
mMuteVideo.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        if (isChecked) {
            stream.muteVideo();
        } else {
            stream.unmuteVideo();
        }
    }
});