Android SDK 1.1 - EN
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To analyze the code let's take the class  ScreenSharingActivity.java of the screen-sharing example, which can be downloaded with build 1.1.0.1155.

1. Initialization of the API.

Flashphoner.init()  code

Context object is passed to method init() for initialization.

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Flashphoner.init(this);

2. Request permossion the permission to use microphone

code

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        mMicCheckBox.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mMicCheckBox.isChecked()) {
                    ActivityCompat.requestPermissions(ScreenSharingActivity.this,
                            new String[]{Manifest.permission.RECORD_AUDIO},
                            PUBLISH_REQUEST_CODE);
                }
            }
        });

3. Choose the microphone

code

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        mMicSpinner = (Spinner) findViewById(R.id.spinner_mic);
        ArrayAdapter<MediaDevice> arrayAdapter = new ArrayAdapter<MediaDevice>(this, android.R.layout.simple_spinner_item, Flashphoner.getMediaDevices().getAudioList());
        arrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        mMicSpinner.setAdapter(arrayAdapter);

...

Flashphoner.createSession()  code

SessionOptions is passed to the method with the following parameters

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5. Connection to the server

Session.connect() . code

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session.connect(new Connection());

6. Receiving the event confirming successful connection.

session.onConnected() code

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@Override
public void onConnected(final Connection connection) {
   runOnUiThread(new Runnable() {
       @Override
       public void run() {
           mStartButton.setText(R.string.action_stop);
           mStartButton.setTag(R.string.action_stop);
           mStartButton.setEnabled(true);
           mStatusView.setText(connection.getStatus());
           ...
       }
   });
}

7. Video stream creation

session.createStream() code

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                                    StreamOptions streamOptions = new StreamOptions(streamName);
                                    VideoConstraints videoConstraints = new VideoConstraints();
                                    DisplayMetrics metrics = getResources().getDisplayMetrics();
                                    videoConstraints.setResolution(metrics.widthPixels, metrics.heightPixels);
                                    videoConstraints.setVideoFps(metrics.densityDpi);
                                    streamOptions.getConstraints().setVideoConstraints(videoConstraints);
                                    streamOptions.getConstraints().updateAudio(mMicCheckBox.isChecked());

                                    /**
                                     * Stream is created with method Session.createStream().
                                     */
                                    publishStream = session.createStream(streamOptions);
                                    ...
                                    startScreenCapture();

8. Prepare to capture device screen

code

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    private void startScreenCapture() {
        mMediaProjectionManager = (MediaProjectionManager) getSystemService(
                Context.MEDIA_PROJECTION_SERVICE);
        Intent permissionIntent = mMediaProjectionManager.createScreenCaptureIntent();
        startActivityForResult(permissionIntent, REQUEST_CODE_CAPTURE_PERM);
    }

9. Screen capture and stream publishingStart foreground service, capture the screen and publish the stream

startService(), setVideoCapturer(), Stream.publish() code

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    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        if (REQUEST_CODE_CAPTURE_PERM == requestCode && resultCode == RESULT_OK) {
            videoCapturerserviceIntent = new ScreenCapturerAndroidIntent(datathis, new MediaProjection.Callback() {ScreenSharingService.class);
                @OverridestartService(serviceIntent);
            videoCapturer = new ScreenCapturerAndroid(data,   new MediaProjection.Callback() {
                @Override
                public void onStop() {
                    super.onStop();
                }
            });
            WebRTCMediaProvider.getInstance().setVideoCapturer(videoCapturer);

            /**
             * Method Stream.publish() is called to publish stream.
             */
            publishStream.publish();
            Log.i(TAG, "Permission has been granted by user");
            ...
        }
    }

...

StreamStatusEvent PUBLISHING code

On receiving this event preview stream is created with Session.createStream() and Stream.play() is invoked to play it.

...

11. Session disconnection.

Session.disconnect() code

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mStartButton.setEnabled(false);

/**
  * Connection to WCS server is closed with method Session.disconnect().
  */
session.disconnect();

12. Starting foreground service

Service.onCreate(), startForeground() code

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    @Override
    public void onCreate() {
        super.onCreate();

        NotificationChannel chan =
                new NotificationChannel(
                        CHANNEL_ID, CHANNEL_NAME, NotificationManager.IMPORTANCE_NONE);
        NotificationManager manager =
                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        chan.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
        manager.createNotificationChannel(chan);

        final int notificationId = (int) System.currentTimeMillis();
        NotificationCompat.Builder notificationBuilder =
                new NotificationCompat.Builder(this, CHANNEL_ID);
        Notification notification =
                notificationBuilder
                        .setSmallIcon(R.drawable.service_icon)
                        .setOngoing(true)
                        .setShowWhen(true)
                        .setContentTitle("ScreenSharingService is running in the foreground")
                        .setPriority(NotificationManager.IMPORTANCE_MIN)
                        .setCategory(Notification.CATEGORY_SERVICE)
                        .build();
        NotificationManager notificationManager
                = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(NOTIFICATION_ID, notification);

        startForeground(notificationId, notification);
    }

13. Stopping foreground service

Service.onDestroy(), stopForeground() code

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    @Override
    public void onDestroy() {
        stopForeground(true);
        super.onDestroy();
    }