如何使用ZXing库以编程方式在Android中生成自定义二维码？

implementation 'com.google.zxing:core:3.4.0'
implementation 'com.journeyapps:zxing-android-embedded:3.4.0'

import android.graphics.Bitmap;
import android.os.Bundle;
import android.widget.ImageView;

import androidx.appcompat.app.AppCompatActivity;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;

public class MainActivity extends AppCompatActivity {

    private ImageView qrCodeImageView;

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

        qrCodeImageView = findViewById(R.id.qr_code_image_view);

        generateQRCode("Hello, ZXing!");
    }

    private void generateQRCode(String data) {
        QRCodeWriter qrCodeWriter = new QRCodeWriter();
        try {
            BitMatrix bitMatrix = qrCodeWriter.encode(data, BarcodeFormat.QR_CODE, 512, 512);
            int width = bitMatrix.getWidth();
            int height = bitMatrix.getHeight();
            Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
            for (int x = 0; x < width; x++) {
                for (int y = 0; y < height; y++) {
                    bitmap.setPixel(x, y, bitMatrix.get(x, y) ? Color.BLACK : Color.WHITE);
                }
            }
            qrCodeImageView.setImageBitmap(bitmap);
        } catch (WriterException e) {
            e.printStackTrace();
        }
    }
}

<ImageView
    android:id="@+id/qr_code_image_view"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:padding="16dp" />