Examples with WriterException com.google.zxing.WriterException used on opensource projects

Example 1 with WriterException

use of com.google.zxing.WriterException in project android-zxingLibrary by yipianfengye.

the class CodeUtils method createImage.

/**
     * 生成二维码图片
     * @param text
     * @param w
     * @param h
     * @param logo
     * @return
     */
public static Bitmap createImage(String text, int w, int h, Bitmap logo) {
    if (TextUtils.isEmpty(text)) {
        return null;
    }
    try {
        Bitmap scaleLogo = getScaleLogo(logo, w, h);
        int offsetX = w / 2;
        int offsetY = h / 2;
        int scaleWidth = 0;
        int scaleHeight = 0;
        if (scaleLogo != null) {
            scaleWidth = scaleLogo.getWidth();
            scaleHeight = scaleLogo.getHeight();
            offsetX = (w - scaleWidth) / 2;
            offsetY = (h - scaleHeight) / 2;
        }
        Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        //容错级别
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        //设置空白边距的宽度
        hints.put(EncodeHintType.MARGIN, 0);
        BitMatrix bitMatrix = new QRCodeWriter().encode(text, BarcodeFormat.QR_CODE, w, h, hints);
        int[] pixels = new int[w * h];
        for (int y = 0; y < h; y++) {
            for (int x = 0; x < w; x++) {
                if (x >= offsetX && x < offsetX + scaleWidth && y >= offsetY && y < offsetY + scaleHeight) {
                    int pixel = scaleLogo.getPixel(x - offsetX, y - offsetY);
                    if (pixel == 0) {
                        if (bitMatrix.get(x, y)) {
                            pixel = 0xff000000;
                        } else {
                            pixel = 0xffffffff;
                        }
                    }
                    pixels[y * w + x] = pixel;
                } else {
                    if (bitMatrix.get(x, y)) {
                        pixels[y * w + x] = 0xff000000;
                    } else {
                        pixels[y * w + x] = 0xffffffff;
                    }
                }
            }
        }
        Bitmap bitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
        bitmap.setPixels(pixels, 0, w, 0, 0, w, h);
        return bitmap;
    } catch (WriterException e) {
        e.printStackTrace();
    }
    return null;
}

Example 2 with WriterException

use of com.google.zxing.WriterException in project weex-example by KalicyZhou.

the class PDF417HighLevelEncoder method determineConsecutiveBinaryCount.

/**
   * Determines the number of consecutive characters that are encodable using binary compaction.
   *
   * @param msg      the message
   * @param startpos the start position within the message
   * @param encoding the charset used to convert the message to a byte array
   * @return the requested character count
   */
private static int determineConsecutiveBinaryCount(String msg, int startpos, Charset encoding) throws WriterException {
    final CharsetEncoder encoder = encoding.newEncoder();
    int len = msg.length();
    int idx = startpos;
    while (idx < len) {
        char ch = msg.charAt(idx);
        int numericCount = 0;
        while (numericCount < 13 && isDigit(ch)) {
            numericCount++;
            //textCount++;
            int i = idx + numericCount;
            if (i >= len) {
                break;
            }
            ch = msg.charAt(i);
        }
        if (numericCount >= 13) {
            return idx - startpos;
        }
        ch = msg.charAt(idx);
        if (!encoder.canEncode(ch)) {
            throw new WriterException("Non-encodable character detected: " + ch + " (Unicode: " + (int) ch + ')');
        }
        idx++;
    }
    return idx - startpos;
}

Example 3 with WriterException

use of com.google.zxing.WriterException in project weex-example by KalicyZhou.

the class QRCodeEncoder method encodeFromStreamExtra.

// Handles send intents from the Contacts app, retrieving a contact as a VCARD.
private void encodeFromStreamExtra(Intent intent) throws WriterException {
    format = BarcodeFormat.QR_CODE;
    Bundle bundle = intent.getExtras();
    if (bundle == null) {
        throw new WriterException("No extras");
    }
    Uri uri = bundle.getParcelable(Intent.EXTRA_STREAM);
    if (uri == null) {
        throw new WriterException("No EXTRA_STREAM");
    }
    byte[] vcard;
    String vcardString;
    InputStream stream = null;
    try {
        stream = activity.getContentResolver().openInputStream(uri);
        if (stream == null) {
            throw new WriterException("Can't open stream for " + uri);
        }
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        byte[] buffer = new byte[2048];
        int bytesRead;
        while ((bytesRead = stream.read(buffer)) > 0) {
            baos.write(buffer, 0, bytesRead);
        }
        vcard = baos.toByteArray();
        vcardString = new String(vcard, 0, vcard.length, "UTF-8");
    } catch (IOException ioe) {
        throw new WriterException(ioe);
    } finally {
        if (stream != null) {
            try {
                stream.close();
            } catch (IOException e) {
            // continue
            }
        }
    }
    Log.d(TAG, "Encoding share intent content:");
    Log.d(TAG, vcardString);
    Result result = new Result(vcardString, vcard, null, BarcodeFormat.QR_CODE);
    ParsedResult parsedResult = ResultParser.parseResult(result);
    if (!(parsedResult instanceof AddressBookParsedResult)) {
        throw new WriterException("Result was not an address");
    }
    encodeQRCodeContents((AddressBookParsedResult) parsedResult);
    if (contents == null || contents.isEmpty()) {
        throw new WriterException("No content to encode");
    }
}

Example 4 with WriterException

use of com.google.zxing.WriterException in project weex-example by KalicyZhou.

the class EncodeActivity method share.

private void share() {
    QRCodeEncoder encoder = qrCodeEncoder;
    if (encoder == null) {
        // Odd
        Log.w(TAG, "No existing barcode to send?");
        return;
    }
    String contents = encoder.getContents();
    if (contents == null) {
        Log.w(TAG, "No existing barcode to send?");
        return;
    }
    Bitmap bitmap;
    try {
        bitmap = encoder.encodeAsBitmap();
    } catch (WriterException we) {
        Log.w(TAG, we);
        return;
    }
    if (bitmap == null) {
        return;
    }
    File bsRoot = new File(Environment.getExternalStorageDirectory(), "BarcodeScanner");
    File barcodesRoot = new File(bsRoot, "Barcodes");
    if (!barcodesRoot.exists() && !barcodesRoot.mkdirs()) {
        Log.w(TAG, "Couldn't make dir " + barcodesRoot);
        showErrorMessage(R.string.msg_unmount_usb);
        return;
    }
    File barcodeFile = new File(barcodesRoot, makeBarcodeFileName(contents) + ".png");
    if (!barcodeFile.delete()) {
        Log.w(TAG, "Could not delete " + barcodeFile);
    // continue anyway
    }
    FileOutputStream fos = null;
    try {
        fos = new FileOutputStream(barcodeFile);
        bitmap.compress(Bitmap.CompressFormat.PNG, 0, fos);
    } catch (FileNotFoundException fnfe) {
        Log.w(TAG, "Couldn't access file " + barcodeFile + " due to " + fnfe);
        showErrorMessage(R.string.msg_unmount_usb);
        return;
    } finally {
        if (fos != null) {
            try {
                fos.close();
            } catch (IOException ioe) {
            // do nothing
            }
        }
    }
    Intent intent = new Intent(Intent.ACTION_SEND, Uri.parse("mailto:"));
    intent.putExtra(Intent.EXTRA_SUBJECT, getString(R.string.app_name) + " - " + encoder.getTitle());
    intent.putExtra(Intent.EXTRA_TEXT, contents);
    intent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://" + barcodeFile.getAbsolutePath()));
    intent.setType("image/png");
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
    startActivity(Intent.createChooser(intent, null));
}

Example 5 with WriterException

use of com.google.zxing.WriterException in project weex-example by KalicyZhou.

the class EncodeActivity method onResume.

@Override
protected void onResume() {
    super.onResume();
    // This assumes the view is full screen, which is a good assumption
    WindowManager manager = (WindowManager) getSystemService(WINDOW_SERVICE);
    Display display = manager.getDefaultDisplay();
    Point displaySize = new Point();
    display.getSize(displaySize);
    int width = displaySize.x;
    int height = displaySize.y;
    int smallerDimension = width < height ? width : height;
    smallerDimension = smallerDimension * 7 / 8;
    Intent intent = getIntent();
    if (intent == null) {
        return;
    }
    try {
        boolean useVCard = intent.getBooleanExtra(USE_VCARD_KEY, false);
        qrCodeEncoder = new QRCodeEncoder(this, intent, smallerDimension, useVCard);
        Bitmap bitmap = qrCodeEncoder.encodeAsBitmap();
        if (bitmap == null) {
            Log.w(TAG, "Could not encode barcode");
            showErrorMessage(R.string.msg_encode_contents_failed);
            qrCodeEncoder = null;
            return;
        }
        ImageView view = (ImageView) findViewById(R.id.image_view);
        view.setImageBitmap(bitmap);
        TextView contents = (TextView) findViewById(R.id.contents_text_view);
        if (intent.getBooleanExtra(Intents.Encode.SHOW_CONTENTS, true)) {
            contents.setText(qrCodeEncoder.getDisplayContents());
            setTitle(qrCodeEncoder.getTitle());
        } else {
            contents.setText("");
            setTitle("");
        }
    } catch (WriterException e) {
        Log.w(TAG, "Could not encode barcode", e);
        showErrorMessage(R.string.msg_encode_contents_failed);
        qrCodeEncoder = null;
    }
}