在Android应用程序中使用条形码扫描器（例如Zxing库），并通过导入配置来实现自定义条形码扫描器，即用户可以在扫描之前选择所需的配置，以实现更好的体验。

示例代码：

1. 在app/build.gradle文件中添加依赖：

dependencies {
    implementation 'com.journeyapps:zxing-android-embedded:3.6.0'
    implementation 'com.google.zxing:core:3.3.0'
}

2. 创建配置类BarcodeScannerActivity：

public class BarcodeScannerActivity extends AppCompatActivity implements DecoratedBarcodeView.TorchListener {

    private static final String TAG = BarcodeScannerActivity.class.getSimpleName();
    private static final int REQUEST_CODE_PERMISSIONS = 10;
    private static final String[] REQUIRED_PERMISSIONS = new String[]{
            Manifest.permission.CAMERA
    };

    DecoratedBarcodeView barcodeView;
    ImageButton flashlightButton;
    TextView typeText;
    TextView resultText;
    TextView debugText;
    Button switchFormatsButton;
    ImageView logoView;

    private String currentBarcodeFormat = null;
    private boolean initialized = false;

    private SharedPreferences sharedPreferences;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_barcode_scanner);

        barcodeView = findViewById(R.id.barcode_scanner);
        flashlightButton = findViewById(R.id.button_flashlight);
        typeText = findViewById(R.id.text_type);
        resultText = findViewById(R.id.text_result);
        debugText = findViewById(R.id.text_debug);
        switchFormatsButton = findViewById(R.id.button_switch_formats);
        logoView = findViewById(R.id.image_logo);

        barcodeView.setTorchListener(this);

        sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
    }

    @Override
    protected void onResume() {
        super.onResume();

        if (!initialized) {
            initialized = true;

            ActivityCompat.requestPermissions(this, REQUIRED_PERMISSIONS, REQUEST_CODE_PERMISSIONS);
        } else {
            barcodeView.resume();
        }
    }

    @Override
    protected void onPause() {
        super.onPause();

        barcodeView.pause();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().