protected void onCreate()

in src/main/java/com/amazonaws/kinesisvideo/demoapp/activity/WebRtcActivity.java [390:488]
72 lines of code
7 McCabe index (conditional complexity)

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

        Intent intent = getIntent();
        mChannelArn = intent.getStringExtra(KEY_CHANNEL_ARN);
        mWssEndpoint = intent.getStringExtra(KEY_WSS_ENDPOINT);

        mClientId = intent.getStringExtra(KEY_CLIENT_ID);
        if (mClientId == null || mClientId.isEmpty()) {
            mClientId = UUID.randomUUID().toString();
        }
        master = intent.getBooleanExtra(KEY_IS_MASTER, true);
        isAudioSent = intent.getBooleanExtra(KEY_SEND_AUDIO, false);
        ArrayList<String> mUserNames = intent.getStringArrayListExtra(KEY_ICE_SERVER_USER_NAME);
        ArrayList<String> mPasswords = intent.getStringArrayListExtra(KEY_ICE_SERVER_PASSWORD);
        ArrayList<Integer> mTTLs = intent.getIntegerArrayListExtra(KEY_ICE_SERVER_TTL);
        ArrayList<List<String>> mUrisList = (ArrayList<List<String>>) intent.getSerializableExtra(KEY_ICE_SERVER_URI);
        mRegion = intent.getStringExtra(KEY_REGION);
        mCameraFacingFront = intent.getBooleanExtra(KEY_CAMERA_FRONT_FACING, true);

        rootEglBase = EglBase.create();

        //TODO: add ui to control TURN only option

        PeerConnection.IceServer stun = PeerConnection
                .IceServer
                .builder(String.format("stun:stun.kinesisvideo.%s.amazonaws.com:443", mRegion))
                .createIceServer();

        peerIceServers.add(stun);

        if (mUrisList != null) {
            for (int i = 0; i < mUrisList.size(); i++) {
                String turnServer = mUrisList.get(i).toString();
                if( turnServer != null) {
                    IceServer iceServer = IceServer.builder(turnServer.replace("[", "").replace("]", ""))
                            .setUsername(mUserNames.get(i))
                            .setPassword(mPasswords.get(i))
                            .createIceServer();
                    Log.d(TAG, "IceServer details (TURN) = " + iceServer.toString());
                    peerIceServers.add(iceServer);
                }
            }
        }

        setContentView(R.layout.activity_webrtc_main);

        PeerConnectionFactory.initialize(PeerConnectionFactory
                .InitializationOptions
                .builder(this)
                .createInitializationOptions());

        peerConnectionFactory =
                PeerConnectionFactory.builder()
                        .setVideoDecoderFactory(new DefaultVideoDecoderFactory(rootEglBase.getEglBaseContext()))
                        .setVideoEncoderFactory(new DefaultVideoEncoderFactory(rootEglBase.getEglBaseContext(), ENABLE_INTEL_VP8_ENCODER, ENABLE_H264_HIGH_PROFILE))
                        .createPeerConnectionFactory();

        videoCapturer = createVideoCapturer();

        // Local video view
        localView = findViewById(R.id.local_view);
        localView.init(rootEglBase.getEglBaseContext(), null);
        localView.setEnableHardwareScaler(true);


        videoSource = peerConnectionFactory.createVideoSource(false);
        SurfaceTextureHelper surfaceTextureHelper = SurfaceTextureHelper.create(Thread.currentThread().getName(), rootEglBase.getEglBaseContext());
        videoCapturer.initialize(surfaceTextureHelper, this.getApplicationContext(), videoSource.getCapturerObserver());

        localVideoTrack = peerConnectionFactory.createVideoTrack(VideoTrackID, videoSource);
        localVideoTrack.addSink(localView);

        if(isAudioSent) {

            AudioSource audioSource = peerConnectionFactory.createAudioSource(new MediaConstraints());
            localAudioTrack = peerConnectionFactory.createAudioTrack(AudioTrackID, audioSource);
            localAudioTrack.setEnabled(true);

        }

        audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
        originalAudioMode = audioManager.getMode();
        originalSpeakerphoneOn = audioManager.isSpeakerphoneOn();

        // Start capturing video
        videoCapturer.startCapture(VIDEO_SIZE_WIDTH, VIDEO_SIZE_HEIGHT, VIDEO_FPS);
        localVideoTrack.setEnabled(true);

        remoteView = findViewById(R.id.remote_view);
        remoteView.init(rootEglBase.getEglBaseContext(), null);

        dataChannelText = findViewById(R.id.data_channel_text);
        sendDataChannelButton = findViewById(R.id.send_data_channel_text);

        createNotificationChannel();
    }