Android QR Code Generator (helper/ZxingUtil.java)

Utility class that creates QR code bitmaps from URLs using the ZXing library with configurable dimensions and UTF-8 encoding. Reuse for generating scannable codes in Android apps.

// Source: https://github.com/177kp/cloudtalk | License: Apache-2.0
// Provided via justclaw.it.com; keep this notice with the code.
package com.zhangwuji.im.ui.helper;

import android.graphics.Bitmap;

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

import java.util.Hashtable;

/**
 * @author Administrator
 * @updateDes 2019/4/19
 */
public class ZxingUtil {

    public static Bitmap createQRcodeImage(String url, int w, int h) {

        try {
            //判断URL合法性
            if (url == null || "".equals(url) || url.length() < 1) {
                return null;
            }
            Hashtable<EncodeHintType, String> hints = ne

... (truncated -- full source via MCP)