Android之二维码的生成与解析

直接上代码，代码上面有具体的解析，并且提供jar供下载：二维码Jar包.rar

根据文本生成对应的二维码：

// 生成QR图    private void createImage() {        try {            // 需要引入core包            QRCodeWriter writer = new QRCodeWriter();            String text = qr_text.getText().toString();            Log.i(TAG, "生成的文本：" + text);            if (text == null || "".equals(text) || text.length() < 1) {                return;            }            // 把输入的文本转为二维码            BitMatrix martix = writer.encode(text, BarcodeFormat.QR_CODE,                    QR_WIDTH, QR_HEIGHT);            System.out.println("w:" + martix.getWidth() + "h:"                    + martix.getHeight());            Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();            hints.put(EncodeHintType.CHARACTER_SET, "utf-8");            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] = 0xffffffff;                    }                }            }            Bitmap bitmap = Bitmap.createBitmap(QR_WIDTH, QR_HEIGHT,                    Bitmap.Config.ARGB_8888);            bitmap.setPixels(pixels, 0, QR_WIDTH, 0, 0, QR_WIDTH, QR_HEIGHT);            qr_image.setImageBitmap(bitmap);        } catch (WriterException e) {            e.printStackTrace();        }    }

根据二维码图片读取内容：

// 解析QR图片    private void scanningImage() {        Map<DecodeHintType, String> hints = new HashMap<DecodeHintType, String>();        hints.put(DecodeHintType.CHARACTER_SET, "utf-8");        // 获得待解析的图片        Bitmap bitmap = ((BitmapDrawable) qr_image.getDrawable()).getBitmap();        RGBLuminanceSource source = new RGBLuminanceSource(bitmap);        BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));        QRCodeReader reader = new QRCodeReader();        Result result;        try {            result = reader.decode(bitmap1, hints);            // 得到解析后的文字            qr_result.setText(result.getText());        } catch (NotFoundException e) {            e.printStackTrace();        } catch (ChecksumException e) {            e.printStackTrace();        } catch (FormatException e) {            e.printStackTrace();        }    }