二维码生成zxing包使用

  //zxing
  compile 'com.google.zxing:core:3.3.0'
  compile 'com.google.zxing:javase:3.3.0'


public static byte[] getQRCodeImage(String text, int width, int height) {
      QRCodeWriter qrCodeWriter = new QRCodeWriter();
      try{
          BitMatrix bitMatrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, width, height);
          ByteArrayOutputStream pngOutputStream = new ByteArrayOutputStream();
          MatrixToImageWriter.writeToStream(bitMatrix, "PNG", pngOutputStream);
          byte[] pngData = pngOutputStream.toByteArray();
          return pngData;
      }catch (Exception e){
          e.printStackTrace();
      }
      return null;
  }