二维码扫描乱码的问题解决方法

来源：互联网发布：台企怎么样知乎编辑：程序博客网时间：2024/06/06 07:06

如果有中文的字符串生成二维码被扫描，会扫描出乱码。本人在网上搜了各种资料都不管用，最后终于让我试验成功，记录下来，希望对大家有所帮助！

public final class CreateEncoding {        private static final int BLACK = 0xff000000;        public static Bitmap createQRCode(String str, int widthAndHeight)                throws WriterException {            Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();            hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);            hints.put(EncodeHintType.CHARACTER_SET, "utf-8");            hints.put(EncodeHintType.MARGIN, 1);    //      BitMatrix matrix = new MultiFormatWriter().encode(str,    //              BarcodeFormat.QR_CODE, widthAndHeight, widthAndHeight);            BitMatrix matrix = new MultiFormatWriter().encode(str, BarcodeFormat.QR_CODE, widthAndHeight, widthAndHeight,hints);            int margin = 5; // 自定义白边边框宽度            matrix = updateBit(matrix, margin); // 生成新的bitMatrix            int width = matrix.getWidth();            int height = matrix.getHeight();            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] = BLACK;                    }                }            }            Bitmap bitmap = Bitmap.createBitmap(width, height,                    Bitmap.Config.ARGB_8888);            bitmap.setPixels(pixels, 0, width, 0, 0, width, height);            return bitmap;        }        private static BitMatrix updateBit(BitMatrix matrix, int margin) {            int tempM = margin * 2;            int[] rec = matrix.getEnclosingRectangle(); // 获取二维码图案的属性            int resWidth = rec[2] + tempM;            int resHeight = rec[3] + tempM;            BitMatrix resMatrix = new BitMatrix(resWidth, resHeight); // 按照自定义边框生成新的BitMatrix            resMatrix.clear();            for (int i = margin; i < resWidth - margin; i++) { // 循环，将二维码图案绘制到新的bitMatrix中                for (int j = margin; j < resHeight - margin; j++) {                    if (matrix.get(i - margin + rec[0], j - margin + rec[1])) {                        resMatrix.set(i, j);                    }                }            }            return resMatrix;        }}

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