Android(安卓)Zxing创建带文字的一维码(条形码)

/** * 用于将给定的内容生成成一维码 注：目前生成内容为中文的话将直接报错，要修改底层jar包的内容 * * @param content 将要生成一维码的内容 * @return 返回生成好的一维码bitmap * @throws WriterException WriterException异常 */public static Bitmap CreateOneDCode(String content, int w, int h) throws WriterException {    BitMatrix matrix = new MultiFormatWriter().encode(content, BarcodeFormat.CODE_128, w, h);    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, 0)) {                pixels[y * width + x] = 0xff000000;            }            else pixels[y * width + x] = 0xffffffff;        }    }    Bitmap bitmap = Bitmap.createBitmap(width, height,            Bitmap.Config.ARGB_8888);    bitmap.setPixels(pixels, 0, width, 0, 0, width, height);    return bitmap;}/** * 将字符串转成图片 * @param text * @param width * @param height * @return */private  static final int TXT_SIZE = 24;private  static final int y_offset = 10;public static Bitmap StringToBitmap(String text, int width, int height) {    Bitmap newBitmap = Bitmap.createBitmap(width,height, Bitmap.Config.ARGB_8888);    Canvas canvas = new Canvas(newBitmap);    canvas.drawBitmap(newBitmap, 0, 0, null);    TextPaint textPaint = new TextPaint();    textPaint.setAntiAlias(true);    textPaint.setTextSize(TXT_SIZE);    textPaint.setColor(Color.BLACK);    StaticLayout sl= new StaticLayout(text, textPaint, newBitmap.getWidth()-8, Layout.Alignment.ALIGN_CENTER, 1.0f, 0.0f, false);    canvas.translate(0, y_offset);    canvas.drawColor(Color.WHITE);    sl.draw(canvas);    return newBitmap;}/** * 连接两个bitmap *  以第一个图为准 * 优化算法  1.图片不需要铺满，只需要以统一合适的宽度。然后让imageview自己去铺满，不然长图合成长图会崩溃，这里以第一张图为例 *2.只缩放不相等宽度的图片。已经缩放过的不需要再次缩放 * @param bit1 * @param bit2 * @return */public static Bitmap CombBitmap(Bitmap bit1, Bitmap bit2) {    Bitmap newBit = null;    int width = bit1.getWidth();    if (bit2.getWidth() != width) {        int h2 = bit2.getHeight() * width / bit2.getWidth();        newBit = Bitmap.createBitmap(width, bit1.getHeight() + h2, Bitmap.Config.ARGB_8888);        Canvas canvas = new Canvas(newBit);        Bitmap newSizeBitmap2 = getNewSizeBitmap(bit2, width, h2);        canvas.drawBitmap(bit1, 0, 0, null);        canvas.drawBitmap(newSizeBitmap2, 0, bit1.getHeight(), null);    } else {        newBit = Bitmap.createBitmap(width, bit1.getHeight() + bit2.getHeight(), Bitmap.Config.ARGB_8888);        Canvas canvas = new Canvas(newBit);        canvas.drawBitmap(bit1, 0, 0, null);        canvas.drawBitmap(bit2, 0, bit1.getHeight(), null);    }    return newBit;}/** * 获取新的bitmap * @param bitmap * @param newWidth * @param newHeight * @return */public static Bitmap getNewSizeBitmap(Bitmap bitmap, int newWidth, int newHeight) {    float scaleWidth = ((float) newWidth) / bitmap.getWidth();    float scaleHeight = ((float) newHeight) / bitmap.getHeight();    // 取得想要缩放的matrix参数    Matrix matrix = new Matrix();    matrix.postScale(scaleWidth, scaleHeight);    // 得到新的图片    Bitmap bit1Scale = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix,            true);    return bit1Scale;}/** *  创建带文字的一维码 * @param content * @param w * @param h * @param stringPrefix * @return * @throws WriterException */public static Bitmap CreateOneDCodeAndString(String content, int w, int h, String stringPrefix) throws WriterException {    return CombBitmap(CreateOneDCode(content, w, h-TXT_SIZE-y_offset), StringToBitmap(stringPrefix + content, w, TXT_SIZE + y_offset));}
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