Java BarcodeFormat類代碼示例

import com.google.zxing.BarcodeFormat; //導入依賴的package包/類
/**
 * 解析二維碼圖片工具類
 *
 * @param bitmap
 */
public static String analyzeBitmap(Bitmap bitmap) {
    MultiFormatReader multiFormatReader = new MultiFormatReader();

    // 解碼的參數
    Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>(2);
    // 可以解析的編碼類型
    Vector<BarcodeFormat> decodeFormats = new Vector<BarcodeFormat>();
    if (decodeFormats == null || decodeFormats.isEmpty()) {
        decodeFormats = new Vector<BarcodeFormat>();

        // 這裏設置可掃描的類型，我這裏選擇了都支持
        decodeFormats.addAll(DecodeFormatManager.ONE_D_FORMATS);
        decodeFormats.addAll(DecodeFormatManager.QR_CODE_FORMATS);
        decodeFormats.addAll(DecodeFormatManager.DATA_MATRIX_FORMATS);
    }
    hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats);
    // 設置繼續的字符編碼格式為UTF8
    hints.put(DecodeHintType.CHARACTER_SET, "UTF8");
    // 設置解析配置參數
    multiFormatReader.setHints(hints);

    // 開始對圖像資源解碼
    Result rawResult = null;
    try {
        rawResult = multiFormatReader.decodeWithState(new BinaryBitmap(new HybridBinarizer(new BitmapLuminanceSource(bitmap))));
    } catch (Exception e) {
        e.printStackTrace();
    }

    if (rawResult != null) {
        return rawResult.getText();
    } else {
        return "Failed";
    }
}
 

import com.google.zxing.BarcodeFormat; //導入依賴的package包/類
/**
 * 條形碼編碼
 */
public static BufferedImage encode(String contents, int width, int height) {
	int codeWidth = 3 + // start guard
			(7 * 6) + // left bars
			5 + // middle guard
			(7 * 6) + // right bars
			3; // end guard
	codeWidth = Math.max(codeWidth, width);
	try {
		// 原為13位Long型數字（BarcodeFormat.EAN_13），現為128位
		BitMatrix bitMatrix = new MultiFormatWriter().encode(contents, BarcodeFormat.CODE_128, codeWidth, height, null);
		return MatrixToImageWriter.toBufferedImage(bitMatrix);
	} catch (Exception e) {
		e.printStackTrace();
	}
	return null;
}
 

import com.google.zxing.BarcodeFormat; //導入依賴的package包/類
/**
 * Superimpose a line for 1D or dots for 2D to highlight the key features of the barcode.
 *
 * @param barcode   A bitmap of the captured image.
 * @param scaleFactor amount by which thumbnail was scaled
 * @param rawResult The decoded results which contains the points to draw.
 */
private void drawResultPoints(Bitmap barcode, float scaleFactor, Result rawResult) {
  ResultPoint[] points = rawResult.getResultPoints();
  if (points != null && points.length > 0) {
    Canvas canvas = new Canvas(barcode);
    Paint paint = new Paint();
    paint.setColor(getResources().getColor(R.color.result_points));
    if (points.length == 2) {
      paint.setStrokeWidth(4.0f);
      drawLine(canvas, paint, points[0], points[1], scaleFactor);
    } else if (points.length == 4 &&
               (rawResult.getBarcodeFormat() == BarcodeFormat.UPC_A ||
                rawResult.getBarcodeFormat() == BarcodeFormat.EAN_13)) {
      // Hacky special case -- draw two lines, for the barcode and metadata
      drawLine(canvas, paint, points[0], points[1], scaleFactor);
      drawLine(canvas, paint, points[2], points[3], scaleFactor);
    } else {
      paint.setStrokeWidth(10.0f);
      for (ResultPoint point : points) {
        if (point != null) {
          canvas.drawPoint(scaleFactor * point.getX(), scaleFactor * point.getY(), paint);
        }
      }
    }
  }
}
 

import com.google.zxing.BarcodeFormat; //導入依賴的package包/類
private void updateQrCode(String qrData) {
	DisplayMetrics displayMetrics = new DisplayMetrics();
	WindowManager wm = (WindowManager) getActivity().getSystemService(Context.WINDOW_SERVICE); // the results will be higher than using the activity context object or the getWindowManager() shortcut
	wm.getDefaultDisplay().getMetrics(displayMetrics);
	int screenWidth = displayMetrics.widthPixels;
	int screenHeight = displayMetrics.heightPixels;
	
	int qrCodeDimension = screenWidth > screenHeight ? screenHeight : screenWidth;
	QRCodeEncoder qrCodeEncoder = new QRCodeEncoder(qrData, null,
	        Contents.Type.TEXT, BarcodeFormat.QR_CODE.toString(), qrCodeDimension);

	

	try {
	    mBitmap = qrCodeEncoder.encodeAsBitmap();
	    mImageView.setImageBitmap(mBitmap);
	    mImageView.setVisibility(View.VISIBLE);
	    mErrorView.setVisibility(View.GONE);
	} catch (WriterException e) {
	    e.printStackTrace();
	    mErrorView.setText("Error: "+e.getMessage());
	    mErrorView.setVisibility(View.VISIBLE);
	    mImageView.setVisibility(View.GONE);
	}
}
 

import com.google.zxing.BarcodeFormat; //導入依賴的package包/類
public static String createQrcode(String dir, String _text) {
	String qrcodeFilePath = "";
	try {
		int qrcodeWidth = 300;
		int qrcodeHeight = 300;
		String qrcodeFormat = "png";
		HashMap<EncodeHintType, String> hints = new HashMap<EncodeHintType, String>();
		hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
		BitMatrix bitMatrix = new MultiFormatWriter().encode(_text, BarcodeFormat.QR_CODE, qrcodeWidth,
				qrcodeHeight, hints);

		BufferedImage image = new BufferedImage(qrcodeWidth, qrcodeHeight, BufferedImage.TYPE_INT_RGB);
		File qrcodeFile = new File(dir + "/" + UUID.randomUUID().toString() + "." + qrcodeFormat);
		ImageIO.write(image, qrcodeFormat, qrcodeFile);
		MatrixToImageWriter.writeToPath(bitMatrix, qrcodeFormat, qrcodeFile.toPath());
		qrcodeFilePath = qrcodeFile.getAbsolutePath();
	} catch (Exception e) {
		e.printStackTrace();
	}
	return qrcodeFilePath;
}
 

import com.google.zxing.BarcodeFormat; //導入依賴的package包/類
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.BarcodeFormat; //導入依賴的package包/類
public static Bitmap createQRCode(String str,int widthAndHeight) 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, 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] = BLACK;
			}
		}
	}
	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.BarcodeFormat; //導入依賴的package包/類
/**
 * 生成條形二維碼
 */
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.BarcodeFormat; //導入依賴的package包/類
CaptureActivityHandler(CaptureActivity activity,
                       Collection<BarcodeFormat> decodeFormats,
                       Map<DecodeHintType,?> baseHints,
                       String characterSet,
                       CameraManager cameraManager) {
  this.activity = activity;
  decodeThread = new DecodeThread(activity, decodeFormats, baseHints, characterSet,
          new ViewfinderResultPointCallback(activity.getViewfinderView()));
  decodeThread.start();
  state = State.SUCCESS;

  // Start ourselves capturing previews and decoding.
  this.cameraManager = cameraManager;
  cameraManager.startPreview();
  restartPreviewAndDecode();
}
 

import com.google.zxing.BarcodeFormat; //導入依賴的package包/類
public ProductParsedResult parse(Result result) {
    BarcodeFormat format = result.getBarcodeFormat();
    if (format != BarcodeFormat.UPC_A && format != BarcodeFormat.UPC_E && format !=
            BarcodeFormat.EAN_8 && format != BarcodeFormat.EAN_13) {
        return null;
    }
    String rawText = ResultParser.getMassagedText(result);
    if (!ResultParser.isStringOfDigits(rawText, rawText.length())) {
        return null;
    }
    String normalizedProductID;
    if (format == BarcodeFormat.UPC_E && rawText.length() == 8) {
        normalizedProductID = UPCEReader.convertUPCEtoUPCA(rawText);
    } else {
        normalizedProductID = rawText;
    }
    return new ProductParsedResult(rawText, normalizedProductID);
}
 

import com.google.zxing.BarcodeFormat; //導入依賴的package包/類
private boolean encodeContentsFromZXingIntent(Intent intent) {
    // Default to QR_CODE if no format given.
    String formatString = intent.getStringExtra(Intents.Encode.FORMAT);
    try {
        format = BarcodeFormat.valueOf(formatString);
    } catch (IllegalArgumentException iae) {
        // Ignore it then
        format = null;
    }
    if (format == null || BarcodeFormat.QR_CODE.equals(format)) {
        String type = intent.getStringExtra(Intents.Encode.TYPE);
        if (type == null || type.length() == 0) {
            return false;
        }
        this.format = BarcodeFormat.QR_CODE;
        encodeQRCodeContents(intent, type);
    } else {
        String data = intent.getStringExtra(Intents.Encode.DATA);
        if (data != null && data.length() > 0) {
            contents = data;
            displayContents = data;
            title = activity.getString(R.string.contents_text);
        }
    }
    return contents != null && contents.length() > 0;
}
 

import com.google.zxing.BarcodeFormat; //導入依賴的package包/類
/**
 * Create QR code
 *
 * @param content                  content
 * @param widthPix                 widthPix
 * @param heightPix                heightPix
 * @param openErrorCorrectionLevel Does fault tolerance open?
 * @param logoBitmap               The two-dimensional code Logo icon (Center for null)
 * @param filePath                 The file path used to store two-dimensional code images
 * @return Generate two-dimensional code and save the file is successful [boolean]
 */
public static boolean createQRCode(String content, int widthPix, int heightPix, boolean openErrorCorrectionLevel, Bitmap logoBitmap, String filePath) {
    try {
        if (TextUtils.isEmpty(content) || TextUtils.equals("null", content) || "".equals(content)) {
            return false;
        }
        Map hints = openErrorCorrectionLevel(openErrorCorrectionLevel);
        // Image data conversion, the use of matrix conversion
        BitMatrix bitMatrix = new QRCodeWriter().encode(new String(content.getBytes("UTF-8"), "iso-8859-1"), BarcodeFormat.QR_CODE, widthPix, heightPix, hints);

        Bitmap bitmap = generateQRBitmap(bitMatrix);

        if (logoBitmap != null) {
            bitmap = addLogo(bitmap, logoBitmap);
        }
        boolean compress = bitmap.compress(Bitmap.CompressFormat.JPEG, 100, new FileOutputStream(filePath));
        //You must use the compress method to save the bitmap to the file and then read it.
        //The bitmap returned directly is without any compression, and the memory consumption is huge!
        return bitmap != null && bitmap.compress(Bitmap.CompressFormat.JPEG, 100, new FileOutputStream(filePath));
    } catch (WriterException | IOException e) {
        e.printStackTrace();
    }

    return false;
}
 

import com.google.zxing.BarcodeFormat; //導入依賴的package包/類
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.BarcodeFormat; //導入依賴的package包/類
/**條形碼的生成*/
private void createBarCode(HttpServletResponse response){
	int codeWidth = 3 + // start guard
			(7 * 6) + // left bars
			5 + // middle guard
			(7 * 6) + // right bars
			3; // end guard
	codeWidth = Math.max(codeWidth, width);
	try {
		BitMatrix bitMatrix = new MultiFormatWriter().encode(content,BarcodeFormat.CODE_128, codeWidth, height, null);
		// 條形碼
		MatrixToImageWriter.writeToStream(bitMatrix, format, response.getOutputStream());
	} catch (Exception e) {
		System.out.println("生成條形碼異常！"+e.toString());
	}
}
 

import com.google.zxing.BarcodeFormat; //導入依賴的package包/類
/**
 * 傳入字符串生成二維碼
 *
 * @param str
 * @return
 * @throws WriterException
 */
public static Bitmap Create2DCode(String str) throws WriterException {
    // 生成二維矩陣,編碼時指定大小,不要生成了圖片以後再進行縮放,這樣會模糊導致識別失敗
    BitMatrix matrix = new MultiFormatWriter().encode(str,
            BarcodeFormat.QR_CODE, 300, 300);
    int width = matrix.getWidth();
    int height = matrix.getHeight();
    // 二維矩陣轉為一維像素數組,也就是一直橫著排了
    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);
    // 通過像素數組生成bitmap,具體參考api
    bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return bitmap;
}