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生成bitmap方法，直接賦值即可

public static Bitmap createQRImage(String url, final int width, final int height) {
   try {
      // 判斷URL合法性
if (url == null || "".equals(url) || url.length() < 1) {
         return null;
}
      Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, 
 
String>();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
// 影象資料轉換，使用了矩陣轉換
BitMatrix bitMatrix = new QRCodeWriter().encode(url,
BarcodeFormat.QR_CODE, width, height, hints);
      int[] pixels = new int[width * height];
// 下面這裡按照二維碼的演算法，逐個生成二維碼的圖片，
      // 兩個for迴圈是圖片橫列掃描的結果
for (int y = 0; y < height; 
 
y++) {
         for (int x = 0; x < width; x++) {
            if (bitMatrix.get(x, y)) {
               pixels[y * width + x] = 0xff000000;
} else {
               pixels[y * width + x] = 0xffffffff;
}
         }
      }
      // 生成二維碼圖片的格式，使用ARGB_8888
Bitmap bitmap = Bitmap.createBitmap(width, height,
Bitmap.Config.ARGB_8888
 
);
bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
Log.e("bit", "createQRImage: "+bitmap.toString());
      return bitmap;
} catch (WriterException e) {
      e.printStackTrace();
}
   return null;
}

/**
 * 在二維碼中間新增Logo圖案
 */
private static Bitmap addLogo(Bitmap src, Bitmap logo) {
    if (src == null) {
        return null;
}
    if (logo == null) {
        return src;
}
    //獲取圖片的寬高
int srcWidth = src.getWidth();
    int srcHeight = src.getHeight();
    int logoWidth = logo.getWidth();
    int logoHeight = logo.getHeight();
    if (srcWidth == 0 || srcHeight == 0) {
        return null;
}

    if (logoWidth == 0 || logoHeight == 0) {
        return src;
}
    //logo大小為二維碼整體大小的1/5
float scaleFactor = srcWidth * 1.0f / 5 / logoWidth;
Bitmap bitmap = Bitmap.createBitmap(srcWidth, srcHeight, Bitmap.Config.ARGB_8888);
    try {
        Canvas canvas = new Canvas(bitmap);
canvas.drawBitmap(src, 0, 0, null);
canvas.scale(scaleFactor, scaleFactor, srcWidth / 2, srcHeight / 2);
canvas.drawBitmap(logo, (srcWidth - logoWidth) / 2, (srcHeight - logoHeight) / 2, null);
canvas.save(Canvas.ALL_SAVE_FLAG);
canvas.restore();
} catch (Exception e) {
        bitmap = null;
e.getStackTrace();
}

    return bitmap;
}

jar包下載地址：點選開啟連結