如何正确设置ZXingScannerView的选项？

<uses-permission android:name="android.permission.CAMERA" />

<me.dm7.barcodescanner.zxing.ZXingScannerView
    android:id="@+id/zxingScannerView"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

private ZXingScannerView zxingScannerView;

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

    zxingScannerView = findViewById(R.id.zxingScannerView);

    // 设置自动聚焦
    zxingScannerView.setAutoFocus(true);
    
    // 设置解码器
    Collection<BarcodeFormat> formats = new ArrayList<>();
    formats.add(BarcodeFormat.QR_CODE);
    zxingScannerView.setFormats(formats);

    // 设置扫描回调
    zxingScannerView.setResultHandler(new ZXingScannerView.ResultHandler() {
        @Override
        public void handleResult(Result result) {
            // 处理扫描结果
        }
    });
}

@Override
protected void onResume() {
    super.onResume();
    zxingScannerView.setResultHandler(this); // 设置扫描回调
    zxingScannerView.startCamera(); // 启动相机
}

@Override
protected void onPause() {
    super.onPause();
    zxingScannerView.stopCamera(); // 停止相机
}