Android -- 采用zxing生成二维码

compile 'com.google.zxing:core:3.1.0'

public class QrCodeUtil {

// 生成QR图
public static Bitmap getQrCodeImage(int QR_WIDTH, int QR_HEIGHT, String text) throws WriterException {
try {
// 需要引入core包
QRCodeWriter writer = new QRCodeWriter();

if (text == null || "".equals(text) || text.length() < 1) {
return null;
}

Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
hints.put(EncodeHintType.MARGIN, 0);

BitMatrix bitMatrix = new QRCodeWriter().encode(text, BarcodeFormat.QR_CODE, QR_WIDTH, QR_HEIGHT, hints);
int[] pixels = new int[QR_WIDTH * QR_HEIGHT];

for (int y = 0; y < QR_HEIGHT; y++) {
for (int x = 0; x < QR_WIDTH; x++) {
if (bitMatrix.get(x, y)) {
pixels[y * QR_WIDTH + x] = 0xff000000;
} else {
pixels[y * QR_WIDTH + x] = 0x00ffff;
}
}
}

Bitmap bitmap = Bitmap.createBitmap(QR_WIDTH, QR_HEIGHT,
Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, QR_WIDTH, 0, 0, QR_WIDTH, QR_HEIGHT);

return bitmap;

} catch (WriterException e) {
e.printStackTrace();
return null;
}
}

}

//调用
Bitmap bmp = QrCodeUtil.getQrCodeImage(200, 200, “www.baidu.com”);