fabPicture.setOnClickListener(view -> {
    final PhotoBarcodeScanner photoBarcodeScanner = new PhotoBarcodeScannerBuilder()
            .withActivity(this)
            .withTakingPictureMode()
            .withPictureListener(file -> {
                imageView.setImageURI(Uri.fromFile(file));
            })
            .build();
    photoBarcodeScanner.start();
});

fabBarcode.setOnClickListener(view -> {
    final PhotoBarcodeScanner photoBarcodeScanner = new PhotoBarcodeScannerBuilder()
            .withActivity(this)
            .withResultListener((Barcode barcode) -> {
                textView.setText(barcode.rawValue);
            })
            .build();
    photoBarcodeScanner.start();
});

.withCameraFullScreenMode(false)       //Mode of camera preview: FullScreen - 16/9 with horizontal crop, or otherwise 4/3 with screen fit
.withRequestedFps(25.0f)               //Fps in preview of picture.
.withSoundEnabled(true)                //Enables or disables a sound whenever picture taken or a barcode is scanned
.withAutoFocus(true)                   //Enables or disables auto focusing on the camera
.withFocusOnTap(true)                  //Allow focus picture when user tap on screen
.withFlashMode(FlashMode)              //Setup default flash mode before open camera
.withFlashListener(Consumer<FlashMode>)//Sets handler when flash changed (for ability to save the last used flash mode in settings)
.withCameraFacingBack(true)            //Use the camera facing back or front
.withCameraLockRotate(true)            //Lock rotate phone and orientation in camera activity (to avoid recreating view)
.withErrorListener(ex->{showAlert()})  //Possibility to customize fatal exceptions occured 
.withMinorErrorHandler(printStackTrace)//Possibility to customize handler of non fatal exceptions
.withCancelListener(Runnable)          //Called when back pressed in camera activity or dialog for request permission is cancelled  

.withTakingPictureMode()               //Activate takingPicture mode instead of taking barcode (barcode mode is default)
.withPreviewImage(true)                //Allow preview image and redo it before it returned
.withPictureListener(Consumer<File>)   //Set listener to take picture, file will saved in context.getFilesDir()/photos
.withFacingListener(Consumer<Boolean>) //Sets listener when camera facing changed (for ability to save the last used camera facing in settings)
.withFlipFaceFrontResultImage(false)   //Enables or disables flip result image of facing front camera
.withThumbnails(false)                 //In addition to the photo the thumbnail will be saved too (in context.getFilesDir()/thumbnails)
.withCameraTryFixOrientation(true)     //Automatically try to rotate final image by phone sensors
.withImageLargerSide(1200)             //Once the picture is taken, if its too big, it automatically resizes by the maximum side
.withSavePhotoToGallery(String)        //Once the picture is taken, it automatically saved into phone gallery as well (DCIM directory)
                                       //You need to have WRITE_EXTERNAL_STORAGE and READ_EXTERNAL_STORAGE permissions in your manifest file to use it

.withCenterTracker(false)              //Enables the default center tracker (white square in screen)
.withResultListener(Consumer<Barcode>) //Called immediately after a barcode was scanned
.withText("Scanning...")               //Shows a text message at the top of the barcode scanner
.withTrackerColor(int)                 //Sets the tracker color used by the barcode scanner (default is "#F44336")
.withCenterTracker(int, int)           //Customize center tracker with a custom drawable resource
.withOnly2DScanning()                  //Setup scan only 2D type of barcodes
.withOnly3DScanning()                  //Setup scan only 3D type of barcodes
.withOnlyQRCodeScanning()              //Setup scan only QR-Code barcodes
.withBarcodeFormats(int)               //Bit mask that selects which formats this barcode detector should recognize.

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    photoBarcodeScanner.onRequestPermissionsResult(requestCode, permissions, grantResults);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    photoBarcodeScanner.onActivityResult(requestCode, resultCode, data);
}