解决zing生成二维码时二维码太小、白框太大的问题

来源：互联网发布：淘宝助理手机详情编辑：程序博客网时间：2024/05/01 08:30

　　项目里实现生成二维码这个功能时，发现二维码的边框太大了，导致二维码内容区域太小。百度了一下，发现有人说设置EncodeHintType.MARGIN属性即可，这个属性值为1-4，实际测试发现并没有什么卵用。只好继续百度，最终找到了这个方法。
　　

public static Bitmap Create2DCode(String str, int width, int height) {        try {            Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();            hints.put(EncodeHintType.CHARACTER_SET, "utf-8");            hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);            hints.put(EncodeHintType.MARGIN, 1);            BitMatrix matrix = new QRCodeWriter().encode(str, BarcodeFormat.QR_CODE, width, height， hint);            matrix = deleteWhite(matrix);//删除白边            width = matrix.getWidth();            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] = Color.BLACK;                    } else {                        pixels[y * width + x] = Color.WHITE;                    }                }            }            Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);            bitmap.setPixels(pixels, 0, width, 0, 0, width, height);            return bitmap;        } catch (Exception e) {            return null;        }    }    private static BitMatrix deleteWhite(BitMatrix matrix) {        int[] rec = matrix.getEnclosingRectangle();        int resWidth = rec[2] + 1;        int resHeight = rec[3] + 1;        BitMatrix resMatrix = new BitMatrix(resWidth, resHeight);        resMatrix.clear();        for (int i = 0; i < resWidth; i++) {            for (int j = 0; j < resHeight; j++) {                if (matrix.get(i + rec[0], j + rec[1]))                    resMatrix.set(i, j);            }        }        return resMatrix;    }

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