protected Bitmap createQrCodeBitmap(String input, int size) {
Log.d(Config.LOGTAG, "qr code requested size: " + size);
try {
final QRCodeWriter QR_CODE_WRITER = new QRCodeWriter();
final Hashtable<EncodeHintType, Object> hints = new Hashtable<>();
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
final BitMatrix result =
QR_CODE_WRITER.encode(input, BarcodeFormat.QR_CODE, size, size, hints);
final int width = result.getWidth();
final int height = result.getHeight();
final int[] pixels = new int[width * height];
for (int y = 0; y < height; y++) {
final int offset = y * width;
for (int x = 0; x < width; x++) {
pixels[offset + x] = result.get(x, y) ? Color.BLACK : Color.TRANSPARENT;
}
}
final Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
Log.d(Config.LOGTAG, "output size: " + width + "x" + height);
bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
return bitmap;
} catch (final WriterException e) {
return null;
}
}
/*
* create QR code with overlay
*/
public static void createQRCode(
String qrCodeData,
String outputFilePath,
String overlayFilePath,
String charset,
Map<EncodeHintType, ErrorCorrectionLevel> hintMap,
int qrCodeheight,
int qrCodewidth)
throws WriterException, IOException {
// create QR code <BufferedImage>
QRCodeWriter qrWriter = new QRCodeWriter();
BitMatrix matrix =
qrWriter.encode(qrCodeData, BarcodeFormat.QR_CODE, qrCodewidth, qrCodeheight, hintMap);
BufferedImage image = MatrixToImageWriter.toBufferedImage(matrix);
// read overlay image
BufferedImage overlay = ImageIO.read(new File(overlayFilePath));
// Draw the new image
int deltaHeight = image.getHeight() - overlay.getHeight();
int deltaWidth = image.getWidth() - overlay.getWidth();
BufferedImage combined =
new BufferedImage(qrCodeheight, qrCodewidth, BufferedImage.TYPE_INT_ARGB);
Graphics2D g = (Graphics2D) combined.getGraphics();
g.drawImage(image, 0, 0, null);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1f));
g.drawImage(overlay, (int) Math.round(deltaWidth / 2), (int) Math.round(deltaHeight / 2), null);
ImageIO.write(combined, "PNG", new File(outputFilePath));
}
public BufferedImage getQRCode(String codeText, Integer size) {
try {
Hashtable<EncodeHintType, ErrorCorrectionLevel> hintMap = new Hashtable<>();
hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
QRCodeWriter qrCodeWriter = new QRCodeWriter();
byteMatrix = qrCodeWriter.encode(codeText, BarcodeFormat.QR_CODE, size, size, hintMap);
int imageWidth = byteMatrix.getWidth();
image = new BufferedImage(imageWidth, imageWidth, BufferedImage.TYPE_INT_RGB);
image.createGraphics();
Graphics2D graphics = (Graphics2D) image.getGraphics();
graphics.setColor(Color.WHITE);
graphics.fillRect(0, 0, imageWidth, imageWidth);
graphics.setColor(Color.BLACK);
for (int i = 0; i < imageWidth; i++) {
for (int j = 0; j < imageWidth; j++) {
if (byteMatrix.get(i, j)) {
graphics.fillRect(i, j, 1, 1);
}
}
}
return image;
} catch (WriterException e) {
return null;
}
}
private List<BufferedImage> exportSplitCompress(String s) throws IOException, WriterException {
final QRCodeWriter writer = new QRCodeWriter();
final int multiple = 1;
final Hashtable hints = new Hashtable();
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
final Compression comp = new CompressionZlib();
final byte data[] = comp.compress(s.getBytes("UTF-8"));
final List<BufferedImage> result = new ArrayList<BufferedImage>();
final List<byte[]> blocs = new ArrayList<byte[]>();
for (int i = 0; i < 4; i++) {
blocs.add(getSplited(data, i, 4));
}
blocs.add(xor(blocs));
for (byte d[] : blocs) {
// Encoder.DEFAULT_BYTE_MODE_ENCODING
final BitMatrix bit =
writer.encode(new String(d, "ISO-8859-1"), BarcodeFormat.QR_CODE, multiple);
result.add(MatrixToImageWriter.toBufferedImage(bit));
}
return Collections.unmodifiableList(result);
}
private List<BufferedImage> exportFlashcodeSimple(String s) throws IOException, WriterException {
final QRCodeWriter writer = new QRCodeWriter();
final int multiple = 1;
final Hashtable hints = new Hashtable();
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
final BitMatrix bit = writer.encode(s, BarcodeFormat.QR_CODE, multiple);
final BufferedImage im = MatrixToImageWriter.toBufferedImage(bit);
return Arrays.asList(im);
}
public static Bitmap generate(String data) throws WriterException {
Bitmap bmp;
QRCodeWriter writer = new QRCodeWriter();
BitMatrix bitMatrix = writer.encode(data, BarcodeFormat.QR_CODE, 512, 512);
int width = bitMatrix.getWidth();
int height = bitMatrix.getHeight();
bmp = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
bmp.setPixel(x, y, bitMatrix.get(x, y) ? Color.BLACK : Color.WHITE);
}
}
return bmp;
}
private Bitmap createBitmap(String content, final int size) {
final Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
hints.put(EncodeHintType.MARGIN, 0);
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
BitMatrix result;
try {
result = sQRCodeWriter.encode(content, BarcodeFormat.QR_CODE, size, size, hints);
} catch (WriterException ex) {
mLogger.warn("qr encoder failed: " + ex.toString());
return null;
}
final int width = result.getWidth();
final int height = result.getHeight();
final int[] pixels = new int[width * height];
for (int y = 0; y < height; y++) {
final int offset = y * width;
for (int x = 0; x < width; x++) {
pixels[offset + x] = result.get(x, y) ? Color.BLACK : Color.TRANSPARENT;
}
}
final Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
return bitmap;
}
public static Bitmap bitmap(@Nonnull final String content, final int size) {
try {
final Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
hints.put(EncodeHintType.MARGIN, 0);
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
final BitMatrix result =
QR_CODE_WRITER.encode(content, BarcodeFormat.QR_CODE, size, size, hints);
final int width = result.getWidth();
final int height = result.getHeight();
final int[] pixels = new int[width * height];
for (int y = 0; y < height; y++) {
final int offset = y * width;
for (int x = 0; x < width; x++) {
pixels[offset + x] = result.get(x, y) ? Color.BLACK : Color.TRANSPARENT;
}
}
final Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
return bitmap;
} catch (final WriterException x) {
log.info("problem creating qr code", x);
return null;
}
}
private List<BufferedImage> exportFlashcodeCompress(String s)
throws IOException, WriterException {
final QRCodeWriter writer = new QRCodeWriter();
final int multiple = 1;
final Hashtable hints = new Hashtable();
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
final Compression comp = new CompressionZlib();
final byte data[] = comp.compress(s.getBytes("UTF-8"));
// Encoder.DEFAULT_BYTE_MODE_ENCODING
final BitMatrix bit =
writer.encode(new String(data, "ISO-8859-1"), BarcodeFormat.QR_CODE, multiple);
final BufferedImage im = MatrixToImageWriter.toBufferedImage(bit);
return Arrays.asList(im);
}
public static int[] generateQR(String text, int dimension) {
QRCodeWriter qrCodeWriter = new QRCodeWriter();
BitMatrix matrix = null;
try {
matrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, dimension, dimension);
} catch (WriterException e) {
e.printStackTrace();
}
int[] pixels = new int[dimension * dimension];
for (int y = 0; y < dimension; y++) {
int offset = y * dimension;
for (int x = 0; x < dimension; x++) {
if (matrix.get(x, y)) pixels[offset + x] = Color.BLACK;
else pixels[offset + x] = Color.WHITE;
}
}
return pixels;
}
// 生成QR图
private void createImage() {
try {
// 需要引入core包
QRCodeWriter writer = new QRCodeWriter();
String text = RQcode;
Log.i(TAG, "生成的文本：" + text);
if (text == null || "".equals(text) || text.length() < 1) {
return;
}
// 把输入的文本转为二维码
BitMatrix martix = writer.encode(text, BarcodeFormat.QR_CODE, QR_WIDTH, QR_HEIGHT);
System.out.println("w:" + martix.getWidth() + "h:" + martix.getHeight());
Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
BitMatrix bitMatrix =
new QRCodeWriter().encode(text, BarcodeFormat.QR_CODE, QR_WIDTH, QR_HEIGHT, hints);
int[] pixels = new int[QR_WIDTH * QR_HEIGHT];
for (int y = 0; y < QR_HEIGHT; y++) {
for (int x = 0; x < QR_WIDTH; x++) {
if (bitMatrix.get(x, y)) {
pixels[y * QR_WIDTH + x] = 0xff000000;
} else {
pixels[y * QR_WIDTH + x] = 0xffffffff;
}
}
}
barcodeBitmap = Bitmap.createBitmap(QR_WIDTH, QR_HEIGHT, Bitmap.Config.ARGB_8888);
barcodeBitmap.setPixels(pixels, 0, QR_WIDTH, 0, 0, QR_WIDTH, QR_HEIGHT);
imgOutput.setImageBitmap(barcodeBitmap);
} catch (WriterException e) {
e.printStackTrace();
}
}
private Bitmap encodeString(String input) throws WriterException {
BarcodeFormat QR_CODE = BarcodeFormat.QR_CODE;
// byte[] b = input.getBytes();
// //convert the byte array into a UTF-8 string
// String data = "";
// try {
// data = new String(b, "ISO-8859-1");
// }
// catch (UnsupportedEncodingException e) {
// //the program shouldn't be able to get here
// Log.i("The message", "cannot convert to ISO");
// }
Hashtable<EncodeHintType, Object> hints = null;
String encoding = input;
Log.i("Encoding", encoding);
if (encoding != null) {
hints = new Hashtable<EncodeHintType, Object>(2);
hints.put(EncodeHintType.CHARACTER_SET, encoding);
}
QRCodeWriter writer = new QRCodeWriter();
BitMatrix result = writer.encode(input, QR_CODE, 300, 300, hints);
Log.i("Result", result.toString());
int width = result.getWidth();
int height = result.getHeight();
int[] pixels = new int[width * height];
Log.i("Result", pixels.toString());
// 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;
}