How to build a barcode scanning application?

Files included in the program: 

AndroidManifest.xml

<uses-feature android:name="android.hardware.camera.any" />
<uses-permission android:name="android.permission.CAMERA" />

build.gradle (Module :app)

def camerax_version = "1.2.2"
implementation "androidx.camera:camera-core:${camerax_version}"
implementation "androidx.camera:camera-camera2:${camerax_version}"
implementation "androidx.camera:camera-lifecycle:${camerax_version}"
implementation "androidx.camera:camera-video:${camerax_version}"

implementation "androidx.camera:camera-view:${camerax_version}"
implementation "androidx.camera:camera-extensions:${camerax_version}"
implementation 'com.google.mlkit:barcode-scanning:17.2.0'
implementation 'com.intuit.sdp:sdp-android:1.0.6'
implementation 'com.intuit.ssp:ssp-android:1.0.6'
implementation 'androidx.camera:camera-mlkit-vision:1.2.0-beta02'

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
    <androidx.camera.view.PreviewView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/previewView"
        />
</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.java

package com.simpy.myapplication;

import static androidx.camera.view.CameraController.COORDINATE_SYSTEM_VIEW_REFERENCED;
import static androidx.camera.view.CameraController.IMAGE_ANALYSIS;
import static androidx.camera.view.CameraController.IMAGE_CAPTURE;

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.widget.Toast;

import androidx.activity.EdgeToEdge;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.camera.core.CameraSelector;
import androidx.camera.mlkit.vision.MlKitAnalyzer;
import androidx.camera.view.LifecycleCameraController;
import androidx.camera.view.PreviewView;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;

import com.google.mlkit.vision.barcode.BarcodeScanner;
import com.google.mlkit.vision.barcode.BarcodeScannerOptions;
import com.google.mlkit.vision.barcode.BarcodeScanning;
import com.google.mlkit.vision.barcode.common.Barcode;

import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class MainActivity extends AppCompatActivity {
    private PreviewView previewView;
    private LifecycleCameraController cameraController;
    private BarcodeScanner barcodeScanner;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EdgeToEdge.enable(this);
        setContentView(R.layout.activity_main);
        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
            return insets;
        });

        checkPermissions();

        previewView = findViewById(R.id.previewView);
        previewView.setScaleType(PreviewView.ScaleType.FIT_CENTER);

        cameraController = new LifecycleCameraController(this);

        // create BarcodeScanner object
        BarcodeScannerOptions options = new BarcodeScannerOptions.Builder()
                .setBarcodeFormats(Barcode.FORMAT_ALL_FORMATS)
                .build();
        barcodeScanner = BarcodeScanning.getClient(options);
        CameraSelector cameraSelector = new CameraSelector.Builder()
                .requireLensFacing(CameraSelector.LENS_FACING_BACK)
                .build();
        cameraController.setCameraSelector(cameraSelector);
        cameraController.setEnabledUseCases(IMAGE_CAPTURE | IMAGE_ANALYSIS);
        cameraController.setImageAnalysisAnalyzer(ContextCompat.getMainExecutor(this),
                new MlKitAnalyzer(List.of(barcodeScanner), COORDINATE_SYSTEM_VIEW_REFERENCED,
                        ContextCompat.getMainExecutor(this), result -> {
                    List<Barcode> barcodes = result.getValue(barcodeScanner);
                    if (barcodes.size() > 0) {
                        Toast.makeText(this, "Barcode: " + barcodes.get(0).getRawValue(), Toast.LENGTH_SHORT).show();
                    }
                }));
        previewView.setController(cameraController);
        cameraController.bindToLifecycle(this);
    }

    public static final int PERMISSION_CAMERA = 1;
    public void checkPermissions() {
        if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.CAMERA)
                != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA}
                    , PERMISSION_CAMERA);
        }
    }
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
                                           @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            switch (requestCode) {
                case PERMISSION_CAMERA:
                    Toast.makeText(this, "Camera access granted", Toast.LENGTH_SHORT)
                            .show();
                    break;
            }
        }
    }
    @Override
    public void onDestroy() {
        super.onDestroy();
        cameraController.unbind();
        barcodeScanner.close();
    }
}