package com.dayu.recharge.utils; import android.annotation.SuppressLint; import android.graphics.Bitmap; import com.google.zxing.BarcodeFormat; import com.google.zxing.EncodeHintType; import com.google.zxing.WriterException; import com.google.zxing.common.BitMatrix; import com.google.zxing.qrcode.QRCodeWriter; import java.util.Hashtable; public class BytesUtil { //字节流转16进制字符串 public static String getHexStringFromBytes(byte[] data) { if (data == null || data.length <= 0) { return null; } String hexString = "0123456789ABCDEF"; int size = data.length * 2; StringBuilder sb = new StringBuilder(size); for (int i = 0; i < data.length; i++) { sb.append(hexString.charAt((data[i] & 0xF0) >> 4)); sb.append(hexString.charAt((data[i] & 0x0F) >> 0)); } return sb.toString(); } //单字符转字节 private static byte charToByte(char c) { return (byte) "0123456789ABCDEF".indexOf(c); } //16进制字符串转字节数组 @SuppressLint("DefaultLocale") public static byte[] getBytesFromHexString(String hexstring){ if(hexstring == null || hexstring.equals("")){ return null; } hexstring = hexstring.replace(" ", ""); hexstring = hexstring.toUpperCase(); int size = hexstring.length()/2; char[] hexarray = hexstring.toCharArray(); byte[] rv = new byte[size]; for(int i=0; i> 8);//xH data[2] = (byte)hh; data[3] = (byte)(hh >> 8); int k = 4; int m = 31; for(int i=0; i hints = new Hashtable(); hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); //图像数据转换，使用了矩阵转换 BitMatrix bitMatrix = new QRCodeWriter().encode(data, BarcodeFormat.QR_CODE, size, size, hints); //System.out.println("bitmatrix height:" + bitMatrix.getHeight() + " width:" + bitMatrix.getWidth()); return getBytesFromBitMatrix(bitMatrix); } catch (WriterException e) { // TODO Auto-generated catch block e.printStackTrace(); } return null; } public static byte[] getBytesFromBitMatrix(BitMatrix bits) { if (bits == null) return null; int h = bits.getHeight(); int w = (bits.getWidth() + 7) / 8; byte[] rv = new byte[h * w + 4]; rv[0] = (byte) w;//xL rv[1] = (byte) (w >> 8);//xH rv[2] = (byte) h; rv[3] = (byte) (h >> 8); int k = 4; for (int i = 0; i < h; i++) { for (int j = 0; j < w; j++) { for (int n = 0; n < 8; n++) { byte b = getBitMatrixColor(bits, j * 8 + n, i); rv[k] += rv[k] + b; } k++; } } return rv; } private static byte getBitMatrixColor(BitMatrix bits, int x, int y) { int width = bits.getWidth(); int height = bits.getHeight(); if (x >= width || y >= height || x < 0 || y < 0) return 0; if (bits.get(x, y)) { return 1; } else { return 0; } } /** * 将bitmap图转换为头四位有宽高的光栅位图 */ public static byte[] getBytesFromBitMap(Bitmap bitmap) { int width = bitmap.getWidth(); int height = bitmap.getHeight(); int bw = (width - 1) / 8 + 1; byte[] rv = new byte[height * bw + 4]; rv[0] = (byte) bw;//xL rv[1] = (byte) (bw >> 8);//xH rv[2] = (byte) height; rv[3] = (byte) (height >> 8); int[] pixels = new int[width * height]; bitmap.getPixels(pixels, 0, width, 0, 0, width, height); for (int i = 0; i < height; i++) { for (int j = 0; j < width; j++) { int clr = pixels[width * i + j]; int red = (clr & 0x00ff0000) >> 16; int green = (clr & 0x0000ff00) >> 8; int blue = clr & 0x000000ff; byte gray = (RGB2Gray(red, green, blue)); rv[(width * i + j) / 8 + 4] = (byte) (rv[(width * i + j) / 8 + 4] | (gray << (7 - ((width * i + j) % 8)))); } } return rv; } /** * 将bitmap转成按mode指定的N点行数据 */ public static byte[] getBytesFromBitMap(Bitmap bitmap, int mode) { int width = bitmap.getWidth(); int height = bitmap.getHeight(); int[] pixels = new int[width*height]; if(mode == 0 || mode == 1){ byte[] res = new byte[width*height/8 + 5*height/8]; bitmap.getPixels(pixels, 0, width, 0, 0, width, height); for(int i = 0; i < height/8; i++){ res[0 + i*(width+5)] = 0x1b; res[1 + i*(width+5)] = 0x2a; res[2 + i*(width+5)] = (byte) mode; res[3 + i*(width+5)] = (byte) (width%256); res[4 + i*(width+5)] = (byte) (width/256); for(int j = 0; j < width; j++){ byte gray = 0; for(int m = 0; m < 8; m++){ int clr = pixels[j + width*(i*8+m)]; int red = (clr & 0x00ff0000) >> 16; int green = (clr & 0x0000ff00) >> 8; int blue = clr & 0x000000ff; gray = (byte) ((RGB2Gray(red, green, blue)<<(7-m))|gray); } res[5 + j + i*(width+5)] = gray; } } return res; }else if(mode == 32 || mode == 33){ byte[] res = new byte[width*height/8 + 5*height/24]; bitmap.getPixels(pixels, 0, width, 0, 0, width, height); for(int i = 0; i < height/24; i++){ res[0 + i*(width*3+5)] = 0x1b; res[1 + i*(width*3+5)] = 0x2a; res[2 + i*(width*3+5)] = (byte) mode; res[3 + i*(width*3+5)] = (byte) (width%256); res[4 + i*(width*3+5)] = (byte) (width/256); for(int j = 0; j < width; j++){ for(int n = 0; n < 3; n++){ byte gray = 0; for(int m = 0; m < 8; m++){ int clr = pixels[j + width*(i*24 + m + n*8)]; int red = (clr & 0x00ff0000) >> 16; int green = (clr & 0x0000ff00) >> 8; int blue = clr & 0x000000ff; gray = (byte) ((RGB2Gray(red, green, blue)<<(7-m))|gray); } res[5 + j*3 + i*(width*3+5) + n] = gray; } } } return res; }else{ return new byte[]{0x0A}; } } private static byte RGB2Gray(int r, int g, int b) { return (false ? ((int) (0.29900 * r + 0.58700 * g + 0.11400 * b) > 200) : ((int) (0.29900 * r + 0.58700 * g + 0.11400 * b) < 200)) ? (byte) 1 : (byte) 0; } /** * 生成间断性黑块数据 * @param w : 打印纸宽度, 单位点 * @return */ public static byte[] initBlackBlock(int w){ int ww = (w + 7)/8 ; int n = (ww + 11)/12; int hh = n * 24; byte[] data = new byte[ hh * ww + 5]; data[0] = (byte)ww;//xL data[1] = (byte)(ww >> 8);//xH data[2] = (byte)hh; data[3] = (byte)(hh >> 8); int k = 4; for(int i=0; i < n; i++){ for(int j=0; j<24; j++){ for(int m =0; m> 8);//xH data[2] = (byte)hh; data[3] = (byte)(hh >> 8); int k = 4; for(int i=0; i