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
     
       hints = new Hashtable
      
       ();            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();        }    }
      
     

 

解析QR图片    private void scanningImage() {        Map
     
       hints = new HashMap
      
       ();        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();        }    }
      
     

 

/**	 * 用字符串生成二维码	 * @param str	 * @author zhouzhe@lenovo-cw.com         * zxing是google的一个开源二维码项目,目前基本上和二维码打交道的东西,都会用到它. 最近项         *  目中用到了android手机需要根据提供的字符串生成二维码图片,之前用zxing做过二维码解码,         * 编码还没做过,看了一些demo都是用到了zxing的j2se包的内容,这个在android或者其他平台         * 上显然无法实现,所以我们要利用zxing生成二维矩阵,然后根据android平台的提供的api来         * 生成图片.         * 这一切,需要zxing的core包,在zxing 1.6下测试通过.	 * @return	 * @throws WriterException	 */	public Bitmap Create2DCode(String str) throws WriterException {		//生成二维矩阵,编码时指定大小,不要生成了图片以后再进行缩放,这样会模糊导致识别失败		BitMatrix matrix = new MultiFormatWriter().encode(str,BarcodeFormat.QR_CODE, 300, 300);		int width = matrix.getWidth();		int height = matrix.getHeight();		//二维矩阵转为一维像素数组,也就是一直横着排了		int[] pixels = new int[width * height];		for (int y = 0; y < height; y++) {			for (int x = 0; x < width; x++) {				if(matrix.get(x, y)){					pixels[y * width + x] = 0xff000000;				}							}		}				Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);		//通过像素数组生成bitmap,具体参考api		bitmap.setPixels(pixels, 0, width, 0, 0, width, height);		return bitmap;	}