Java BitMatrix类代码示例

import com.google.zxing.common.BitMatrix; //导入依赖的package包/类
/**
 * 同步创建指定前景色、指定背景色、带logo的二维码图片。该方法是耗时操作，请在子线程中调用。
 *
 * @param content         要生成的二维码图片内容
 * @param size            图片宽高，单位为px
 * @param foregroundColor 二维码图片的前景色
 * @param backgroundColor 二维码图片的背景色
 * @param logo            二维码图片的logo
 */
public static Bitmap syncEncodeQRCode(String content, int size, int foregroundColor, int backgroundColor, Bitmap logo) {
    try {
        BitMatrix matrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, size, size, HINTS);
        int[] pixels = new int[size * size];
        for (int y = 0; y < size; y++) {
            for (int x = 0; x < size; x++) {
                if (matrix.get(x, y)) {
                    pixels[y * size + x] = foregroundColor;
                } else {
                    pixels[y * size + x] = backgroundColor;
                }
            }
        }
        Bitmap bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
        bitmap.setPixels(pixels, 0, size, 0, 0, size, size);
        return addLogoToQRCode(bitmap, logo);
    } catch (Exception e) {
        return null;
    }
}
 

import com.google.zxing.common.BitMatrix; //导入依赖的package包/类
/**
 * 传入字符串生成二维码
 *
 * @param str
 * @return
 * @throws WriterException
 */
public static 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;
}
 

import com.google.zxing.common.BitMatrix; //导入依赖的package包/类
public static @NonNull Bitmap create(String data) {
  try {
    BitMatrix result = new QRCodeWriter().encode(data, BarcodeFormat.QR_CODE, 512, 512);
    Bitmap    bitmap = Bitmap.createBitmap(result.getWidth(), result.getHeight(), Bitmap.Config.ARGB_8888);

    for (int y = 0; y < result.getHeight(); y++) {
      for (int x = 0; x < result.getWidth(); x++) {
        if (result.get(x, y)) {
          bitmap.setPixel(x, y, Color.BLACK);
        }
      }
    }

    return bitmap;
  } catch (WriterException e) {
    Log.w(TAG, e);
    return Bitmap.createBitmap(512, 512, Bitmap.Config.ARGB_8888);
  }
}
 

import com.google.zxing.common.BitMatrix; //导入依赖的package包/类
public Bitmap encodeAsBitmap() throws WriterException {
    if (!encoded) return null;

    Map<EncodeHintType, Object> hints = null;
    String encoding = guessAppropriateEncoding(contents);
    hints = new EnumMap<EncodeHintType, Object>(EncodeHintType.class);
    if (encoding != null) {
        
        hints.put(EncodeHintType.CHARACTER_SET, encoding);
    }
    hints.put(EncodeHintType.MARGIN, 2); /* default = 4 */  
    
    
    MultiFormatWriter writer = new MultiFormatWriter();
    BitMatrix result = writer.encode(contents, format, dimension, dimension, hints);
    int width = result.getWidth();
    int height = result.getHeight();
    int[] pixels = new int[width * height];
    // All are 0, or black, by default
    for (int y = 0; y < height; y++) {
        int offset = y * width;
        for (int x = 0; x < width; x++) {
            pixels[offset + x] = result.get(x, y) ? BLACK : WHITE;
        }
    }

    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return bitmap;
}
 

import com.google.zxing.common.BitMatrix; //导入依赖的package包/类
/**
 * 生成二维码
 *
 * @param content 二维码内容
 * @param size    二维码内容大小
 * @param color   二维码颜色
 */
public static Bitmap createQRCode(String content, int size,int bgColor, int color) {
    try {
        Hashtable<EncodeHintType, String> hints = new Hashtable<>();
        hints.put(EncodeHintType.CHARACTER_SET, CHARACTER_SET);
        BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, size, size, hints);
        int[] pixels = new int[size * size];
        for (int y = 0; y < size; y++) {
            for (int x = 0; x < size; x++) {
                if (bitMatrix.get(x, y)) {
                    pixels[y * size + x] = color;
                } else {
                    pixels[y * size + x] = bgColor;
                }
            }
        }
        Bitmap bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
        bitmap.setPixels(pixels, 0, size, 0, 0, size, size);
        return bitmap;
    } catch (WriterException e) {
        return null;
    }
}
 

import com.google.zxing.common.BitMatrix; //导入依赖的package包/类
/**
 * 生成条形二维码
 */
public static byte[] encode(String contents, int width, int height, String imgPath) {
    int codeWidth = 3 + // start guard
            (7 * 6) + // left bars
            5 + // middle guard
            (7 * 6) + // right bars
            3; // end guard
    codeWidth = Math.max(codeWidth, width);
    byte[] buf = null;
    try {
        BitMatrix bitMatrix = new MultiFormatWriter().encode(contents,
                BarcodeFormat.CODE_128, codeWidth, height, null);
        BufferedImage image = MatrixToImageWriter.toBufferedImage(bitMatrix);
        ByteArrayOutputStream out = new ByteArrayOutputStream();
      ImageIO.write(image, FORMAT_NAME, out);
      out.close();
buf = out.toByteArray();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return buf;
}
 

import com.google.zxing.common.BitMatrix; //导入依赖的package包/类
public static Bitmap createQRCode(String content, int widthAndHeight) {
    if (TextUtils.isEmpty(content)) return null;
    try {
        Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        //Fault tolerance level. MAX
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        //Set the width of the blank margin.
        hints.put(EncodeHintType.MARGIN, 0);
        BitMatrix matrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, widthAndHeight, widthAndHeight);

        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] = 0xff000000;
                }
            }
        }
        Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        bitmap.setPixels(pixels, 0, width, 0, 0, width, height);

        return bitmap;
    } catch (WriterException e) {
        e.printStackTrace();
    }
    return null;
}
 

import com.google.zxing.common.BitMatrix; //导入依赖的package包/类
/**
 * Generate a two-dimensional code image
 *
 * @param content                  An incoming string, usually a URL
 * @param widthAndHeight           widthAndHeight
 * @param openErrorCorrectionLevel Does fault tolerance open?
 * @return A two-dimensional code image [Bitmap]
 */
public static Bitmap createQRCode(String content, int widthAndHeight, boolean openErrorCorrectionLevel) {
    try {
        if (TextUtils.isEmpty(content) || TextUtils.equals("null", content) || "".equals(content)) {
            return null;
        }
        //Processing Chinese characters, if you do not need to change the source code, convert the string into ISO-8859-1 code.
        Map hints = openErrorCorrectionLevel(openErrorCorrectionLevel);
        BitMatrix matrix = new MultiFormatWriter().encode(new String(content.getBytes("UTF-8"), "ISO-8859-1"), BarcodeFormat.QR_CODE, widthAndHeight, widthAndHeight, hints);
        matrix = updateBit(matrix, 8);
        Bitmap bitmap = generateQRBitmap(matrix);
        return bitmap;
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}
 

import com.google.zxing.common.BitMatrix; //导入依赖的package包/类
private Bitmap endcode(String input) {
    BarcodeFormat format = BarcodeFormat.QR_CODE;
    EnumMap<EncodeHintType, Object> hint = new EnumMap<EncodeHintType, Object>(EncodeHintType.class);
    hint.put(EncodeHintType.CHARACTER_SET, "UTF-8");
    BitMatrix result = null;
    try {
        result = new MultiFormatWriter().encode(input, BarcodeFormat.QR_CODE, 500, 500, hint);
    } catch (WriterException e) {
        e.printStackTrace();
    }
    int w = result.getWidth();
    int h = result.getHeight();
    int[] pixels = new int[w * h];
    for (int y = 0; y < h; y++) {
        int offset = y * w;
        for (int x = 0; x < w; x++) {
            pixels[offset + x] = result.get(x, y) ? BLACK : WHITE;
        }
    }
    Bitmap bit = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
    bit.setPixels(pixels, 0, w, 0, 0, w, h);
    ImageView imageView = (ImageView) findViewById(R.id.qr_code_id);
    imageView.setImageBitmap(bit);
    return bit;
}
 

import com.google.zxing.common.BitMatrix; //导入依赖的package包/类
@Nullable
static Bitmap createQrCode(DisplayMetrics dm, String input) {
	int smallestDimen = Math.min(dm.widthPixels, dm.heightPixels);
	try {
		// Generate QR code
		final BitMatrix encoded = new QRCodeWriter().encode(
				input, QR_CODE, smallestDimen, smallestDimen);
		// Convert QR code to Bitmap
		int width = encoded.getWidth();
		int height = encoded.getHeight();
		int[] pixels = new int[width * height];
		for (int x = 0; x < width; x++) {
			for (int y = 0; y < height; y++) {
				pixels[y * width + x] = encoded.get(x, y) ? BLACK : WHITE;
			}
		}
		Bitmap qr = Bitmap.createBitmap(width, height, ARGB_8888);
		qr.setPixels(pixels, 0, width, 0, 0, width, height);
		return qr;
	} catch (WriterException e) {
		if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
		return null;
	}
}
 

import com.google.zxing.common.BitMatrix; //导入依赖的package包/类
private static float moduleSize(int[] leftTopBlack, BitMatrix image) throws NotFoundException {
  int height = image.getHeight();
  int width = image.getWidth();
  int x = leftTopBlack[0];
  int y = leftTopBlack[1];
  boolean inBlack = true;
  int transitions = 0;
  while (x < width && y < height) {
    if (inBlack != image.get(x, y)) {
      if (++transitions == 5) {
        break;
      }
      inBlack = !inBlack;
    }
    x++;
    y++;
  }
  if (x == width || y == height) {
    throw NotFoundException.getNotFoundInstance();
  }
  return (x - leftTopBlack[0]) / 7.0f;
}
 

import com.google.zxing.common.BitMatrix; //导入依赖的package包/类
private static void drawBullsEye(BitMatrix matrix, int center, int size) {
  for (int i = 0; i < size; i += 2) {
    for (int j = center - i; j <= center + i; j++) {
      matrix.set(j, center - i);
      matrix.set(j, center + i);
      matrix.set(center - i, j);
      matrix.set(center + i, j);
    }
  }
  matrix.set(center - size, center - size);
  matrix.set(center - size + 1, center - size);
  matrix.set(center - size, center - size + 1);
  matrix.set(center + size, center - size);
  matrix.set(center + size, center - size + 1);
  matrix.set(center + size, center + size - 1);
}
 

import com.google.zxing.common.BitMatrix; //导入依赖的package包/类
@Override
public Result decode(BinaryBitmap image, Map<DecodeHintType,?> hints)
    throws NotFoundException, ChecksumException, FormatException {
  DecoderResult decoderResult;
  if (hints != null && hints.containsKey(DecodeHintType.PURE_BARCODE)) {
    BitMatrix bits = extractPureBits(image.getBlackMatrix());
    decoderResult = decoder.decode(bits, hints);
  } else {
    throw NotFoundException.getNotFoundInstance();
  }

  ResultPoint[] points = NO_POINTS;
  Result result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), points, BarcodeFormat.MAXICODE);

  String ecLevel = decoderResult.getECLevel();
  if (ecLevel != null) {
    result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, ecLevel);
  }
  return result;
}
 

import com.google.zxing.common.BitMatrix; //导入依赖的package包/类
/**
 * Convert the ByteMatrix to BitMatrix.
 *
 * @param matrix The input matrix.
 * @return The output matrix.
 */
private static BitMatrix convertByteMatrixToBitMatrix(ByteMatrix matrix) {
  int matrixWidgth = matrix.getWidth();
  int matrixHeight = matrix.getHeight();

  BitMatrix output = new BitMatrix(matrixWidgth, matrixHeight);
  output.clear();
  for (int i = 0; i < matrixWidgth; i++) {
    for (int j = 0; j < matrixHeight; j++) {
      // Zero is white in the bytematrix
      if (matrix.get(i, j) == 1) {
        output.set(i, j);
      }
    }
  }

  return output;
}
 

import com.google.zxing.common.BitMatrix; //导入依赖的package包/类
public static Bitmap createQRCode(String str, int size) throws WriterException {
	Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
	hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
	BitMatrix matrix = new MultiFormatWriter().encode(str, BarcodeFormat.QR_CODE, size, size);
	int width = matrix.getWidth();
	int height = matrix.getHeight();
	int[] pixels = new int[width * height];
	for(int x = 0; x < width; x ++){
		for(int y = 0; y < height; y ++){
			if(matrix.get(x, y)){
				pixels[y * width + x] = BLACK;
			}
		}
	}
	Bitmap bitmap = Bitmap.createBitmap(width, height, Config.ARGB_8888);
	bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
	return bitmap;
}