Android网络打印机的那些事

柔光的暖阳◎ 2022-07-13 07:41 299阅读 0赞

最近做项目有碰到使用Android手机连接网络打印机打印小票，把研究了好几天东西记录分享下。

**基于环境**  
测试网络打印机爱普生(Epson)，测试手机华为Meta9,P9,Meta8。

*  **打印一维码，我这边测试不行，有大神知道可以告诉我，可以使用zxing生成一维码二维码，在转图片，反正我用的是这种方式**
 *  **打印二维码OK**
 *  **文本打印完要记得多带几个回车在切纸**

**连接网络打印机**

/**
         * 网络打印机 打开网络打印机
         * 端口都是9100
         * @param ipaddress
         * @param netport
         * @return
         */
        public boolean connction(String ipaddress, int netport)
        {
            try
            {
                Socket socket;
                if (socket!=null){
                    socket.close();
                }
                SocketAddress ipe = new InetSocketAddress(ipaddress,9100);
                socket = new Socket();  //Socket(ipaddress, netport,true);
                socket.connect(ipe);
                socket.setSoTimeout(1500);
    
            }
            catch(Exception e)
            {
                e.printStackTrace();
            }
        }

--------------------

**打印的工具类**

import android.content.Context;
    import android.graphics.Bitmap;
    import android.graphics.BitmapFactory;
    import android.graphics.Canvas;
    import android.graphics.Rect;
    import android.util.Base64;
    import android.util.Log;
    
    
    
    import java.io.ByteArrayOutputStream;
    import java.io.IOException;
    import java.util.Vector;
    
    /**
     * @author： ZhuHuaHua
     * @data 2016/11/24 17:48
     */
    
    public class PrinterTest { Vector<Byte> Command = null; public PrinterTest() { this.Command = new Vector(4096, 1024); } /** * 初始化打印机,主要清空打印机缓存数据，这步很重要，要不打印机容易内存溢出，打印出乱码 */ public void printInit() { byte[] command = {27, 64}; addArrayToCommand(command); } private void addArrayToCommand(byte[] array) { for (int i = 0; i < array.length; i++) { this.Command.add(Byte.valueOf(array[i])); } } /** * 换行回车 */ public void printEnter() { byte[] command = {10}; addArrayToCommand(command); } /** * 功能：选择对齐方式 * @param 0:左对齐 1:居中对齐 2:右对齐
         */
        public void printTextAlign(int align) {
            byte[] command = {
       27,97,(byte) align};
            addArrayToCommand(command);
        }
    
        /**
         *
         * @param bitmap 位图
         * @param nWidth 打印宽度（可以用于缩放图片）
         * @param nMode 打印模式 0： 正常 1：倍宽 2：倍高 3：倍宽 倍高
         */
        public void addRastBitImage(Bitmap bitmap, int nWidth, int nMode) {
            if (bitmap != null) {
                int width = (nWidth + 7) / 8 * 8;
                int height = bitmap.getHeight() * width / bitmap.getWidth();
                Bitmap grayBitmap = GpUtils.toGrayscale(bitmap);
                Bitmap rszBitmap = GpUtils.resizeImage(grayBitmap, width, height);
                byte[] src = GpUtils.bitmapToBWPix(rszBitmap);
                byte[] command = new byte[8];
                height = src.length / width;
                command[0] = 29;
                command[1] = 118;
                command[2] = 48;
                command[3] = ((byte) (nMode & 0x1));
                command[4] = ((byte) (width / 8 % 256));
                command[5] = ((byte) (width / 8 / 256));
                command[6] = ((byte) (height % 256));
                command[7] = ((byte) (height / 256));
                addArrayToCommand(command);
                byte[] codecontent = GpUtils.pixToEscRastBitImageCmd(src);
                for (int k = 0; k < codecontent.length; k++) {
                    this.Command.add(Byte.valueOf(codecontent[k]));
                }
            } else {
                Log.d("BMP", "bmp. null ");
            }
        }
        /**
         * 打印图片
         * @param mbitmap 对象bitmap
         */
        public Vector<Byte> CMD_Image(Bitmap mbitmap) {
                BitmapFactory.Options options = new BitmapFactory.Options();
                options.inScaled = false;
                byte[] decodedByte = Base64.decode(bitmapToBase64(mbitmap), Base64.DEFAULT);
                Bitmap bitmap = BitmapFactory.decodeByteArray(decodedByte, 0, decodedByte.length);
                final int imgWidth = bitmap.getWidth();
                final int imgHeight = bitmap.getHeight();
                final int[] argb = new int[imgWidth * imgHeight];
                bitmap.getPixels(argb, 0, imgWidth, 0, 0, imgWidth, imgHeight);
    
                EscCommand esc = new EscCommand();
    
                esc.addSelectJustification(EscCommand.JUSTIFICATION.CENTER);
                esc.addRastBitImage(bitmap, imgWidth, 0);
                esc.addSelectJustification(EscCommand.JUSTIFICATION.LEFT);
                Vector<Byte> Command  = esc.getCommand();
                Vector<Byte> data = new Vector<>(Command.size());
                for (int i = 0; i < Command.size(); i++) {
                    data.add(Command.get(i));
                }
                bitmap.recycle();
            return  data;
        }
    
        /**
         * bitmap转为base64
         * @param bitmap
         * @return
         */
        public static String bitmapToBase64(Bitmap bitmap) {
    
            String result = null;
            ByteArrayOutputStream baos = null;
            try {
                if (bitmap != null) {
                    baos = new ByteArrayOutputStream();
                    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
                    baos.flush();
                    baos.close();
    
                    byte[] bitmapBytes = baos.toByteArray();
                    result = Base64.encodeToString(bitmapBytes, Base64.DEFAULT);
                }
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    if (baos != null) {
                        baos.flush();
                        baos.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return result;
        }
        /**
         * 打印二维条形码
         * @param printData 打印的内容
         */
        public Vector<Byte> CMD_Qrcode(String printData) {
            EscCommand esc = new EscCommand();
            esc.addSelectJustification(EscCommand.JUSTIFICATION.CENTER);
            esc.addSelectErrorCorrectionLevelForQRCode((byte) 0x31); //设置纠错等级
            esc.addSelectSizeOfModuleForQRCode((byte) 3);//设置qrcode模块大小
            esc.addStoreQRCodeData(printData);//设置qrcode内容
            esc.addPrintQRCode();//打印QRCode
            esc.addSelectJustification(EscCommand.JUSTIFICATION.LEFT);
            esc.addPrintAndLineFeed();
            return esc.getCommand();
        }
        /**
         * 打印的一维码
         * @param printData 需要打印的数据
         */
        public Vector<Byte> CMD_Barcode(String printData, Context context) {
    
             EscCommand esc = new EscCommand();
    //        Bitmap b = BitmapFactory.decodeResource(context.getResources(), R.mipmap.ic_launcher);
    //        px2Byte(0,0,b);
    //        esc.addRastBitImage(b, 384, 0); //打印图片
    //            esc.addText("printData");
                esc.addSelectJustification(EscCommand.JUSTIFICATION.CENTER);
    //             /*打印一维条码*/
                esc.addSetBarcodeWidth((byte) 2);
                esc.addSetBarcodeHeight((byte) 60); //设置条码高度为60点
                    esc.addSelectPrintingPositionForHRICharacters(EscCommand.HRI_POSITION.BELOW);//设置条码可识别字符位置在条码下方
                esc.addCODE128(printData);  //打印Code128码
                esc.addPrintAndLineFeed();
    //            esc.addSelectJustification(EscCommand.JUSTIFICATION.LEFT);
    //            esc.addPrintAndLineFeed();
                return  esc.getCommand();
        }
    
    
        /**
         * 走纸
         * @param line 走纸的行数
         */
        public void printLine(int line)
        {
            byte[] command = {
       27,100,(byte) line};
            addArrayToCommand(command);
        }
    
    
    
        /**
         * 切纸
         */
        public void printCutPage()
        {
            byte[] command = {
       27,109};
            addArrayToCommand(command);
        }
    
        /**
         * 打开钱箱
         * @return
         */
        public void printQianXiang() {
            byte[] command = {
       27,112,0,60,(byte) 255};
            addArrayToCommand(command);
        }
    }

--------------------

**发送指令**

import android.annotation.SuppressLint;
    import android.graphics.Bitmap;
    import android.util.Log;
    
    import java.io.UnsupportedEncodingException;
    import java.util.Vector;
    
    public class EscCommand { private static final String DEBUG_TAG = "EscCommand"; Vector<Byte> Command = null; public enum STATUS { PRINTER_STATUS(1), PRINTER_OFFLINE(2), PRINTER_ERROR(3), PRINTER_PAPER(4); private final int value; STATUS(int value) { this.value = value; } public byte getValue() { return (byte) this.value; } } public enum ENABLE { OFF(0), ON(1); private final int value; ENABLE(int value) { this.value = value; } public byte getValue() { return (byte) this.value; } } public enum UNDERLINE_MODE { OFF(0), UNDERLINE_1DOT(1), UNDERLINE_2DOT(2); private final int value; UNDERLINE_MODE(int value) { this.value = value; } public byte getValue() { return (byte) this.value; } } public enum FONT { FONTA(0), FONTB(1); private final int value; FONT(int value) { this.value = value; } public byte getValue() { return (byte) this.value; } } public enum CHARACTER_SET { USA(0), FRANCE(1), GERMANY(2), UK(3), DENMARK_I(4), SWEDEN(5), ITALY(6), SPAIN_I(7), JAPAN(8), NORWAY(9), DENMARK_II(10), SPAIN_II(11), LATIN_AMERCIA(12), KOREAN(13), SLOVENIA(14), CHINA(15); private final int value; CHARACTER_SET(int value) { this.value = value; } public byte getValue() { return (byte) this.value; } } public enum JUSTIFICATION { LEFT(0), CENTER(1), RIGHT(2); private final int value; JUSTIFICATION(int value) { this.value = value; } public byte getValue() { return (byte) this.value; } } public enum CODEPAGE { PC437(0), KATAKANA(1), PC850(2), PC860(3), PC863(4), PC865(5), WEST_EUROPE(6), GREEK(7), HEBREW(8), EAST_EUROPE(9), IRAN(10), WPC1252(16), PC866(17), PC852(18), PC858(19), IRANII(20), LATVIAN(21), ARABIC(22), PT151(23), PC747(24), WPC1257(25), VIETNAM(27), PC864(28), PC1001(29), UYGUR(30), THAI(255); private final int value; CODEPAGE(int value) { this.value = value; } public byte getValue() { return (byte) this.value; } } public enum WIDTH_ZOOM { MUL_1(0), MUL_2(16), MUL_3(32), MUL_4(48), MUL_5(64), MUL_6(80), MUL_7(96), MUL_8(112); private final int value; WIDTH_ZOOM(int value) { this.value = value; } public byte getValue() { return (byte) this.value; } } public enum HEIGHT_ZOOM { MUL_1(0), MUL_2(1), MUL_3(2), MUL_4(3), MUL_5(4), MUL_6(5), MUL_7(6), MUL_8(7); private final int value; HEIGHT_ZOOM(int value) { this.value = value; } public byte getValue() { return (byte) this.value; } } public enum HRI_POSITION { NO_PRINT(0), ABOVE(1), BELOW(2), ABOVE_AND_BELOW(3); private final int value; HRI_POSITION(int value) { this.value = value; } public byte getValue() { return (byte) this.value; } } public EscCommand() { this.Command = new Vector(4096, 1024); } private void addArrayToCommand(byte[] array) { for (int i = 0; i < array.length; i++) { this.Command.add(Byte.valueOf(array[i])); } } private void addStrToCommand(String str, String charset) { byte[] bs = null; if (!str.equals("")) { try { bs = str.getBytes(charset); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } for (int i = 0; i < bs.length; i++) { this.Command.add(Byte.valueOf(bs[i])); } } } private void addStrToCommand(String str, int length) { byte[] bs = null; if (!str.equals("")) { try { bs = str.getBytes("GB2312"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } Log.d("EscCommand", "bs.length" + bs.length); if (length > bs.length) { length = bs.length; } Log.d("EscCommand", "length" + length); for (int i = 0; i < length; i++) { this.Command.add(Byte.valueOf(bs[i])); } } } public void addText(String text, String charsetName) { addStrToCommand(text, charsetName); } public void addPrintAndLineFeed() { byte[] command = {10}; addArrayToCommand(command); } public Vector<Byte> getCommand() { return this.Command; } public void addInitializePrinter() { byte[] command = {27, 64}; addArrayToCommand(command); } public void addTurnEmphasizedModeOnOrOff(ENABLE enabel) { byte[] command = new byte[]{ (byte)27, (byte)32, enabel.getValue()}; addArrayToCommand(command); } /** * addSelectJustification(JUSTIFICATION just) 功能：选择对齐方式 参数： enum JUSTIFICATION{ LEFT(0), // 左对齐 CENTER(1),// 居中对齐 RIGHT(2);//右对齐 } * @param just */ public void addSelectJustification(JUSTIFICATION just) { byte[] command = new byte[]{ (byte)27, (byte)97, just.getValue()}; addArrayToCommand(command); } /** * 添加打印行的指令 * @param n */ public void addPrintAndFeedLines(byte n) { byte[] command = new byte[]{ (byte)27, (byte)100, n}; addArrayToCommand(command); } public void addGeneratePlus(TscCommand.FOOT foot, byte t1, byte t2) { byte[] command = {27, 112, 0, 0, 0}; command[2] = ((byte) foot.getValue()); command[3] = t1; command[4] = t2; addArrayToCommand(command); } public void addSelectCodePage(CODEPAGE page) { byte[] command = {27, 116, 0}; command[2] = page.getValue(); addArrayToCommand(command); } public void addTurnUpsideDownModeOnOrOff(ENABLE enable) { byte[] command = {27, 123, 0}; command[2] = enable.getValue(); addArrayToCommand(command); } public void addSetCharcterSize(WIDTH_ZOOM width, HEIGHT_ZOOM height) { byte[] command = {29, 33, 0}; byte temp = 0; temp = (byte) (temp | width.getValue()); temp = (byte) (temp | height.getValue()); command[2] = temp; addArrayToCommand(command); } public void addTurnReverseModeOnOrOff(ENABLE enable) { byte[] command = {29, 66, 0}; command[2] = enable.getValue(); addArrayToCommand(command); } public void addSelectPrintingPositionForHRICharacters(HRI_POSITION position) { byte[] command = {29, 72, 0}; command[2] = position.getValue(); addArrayToCommand(command); } public void addSetBarcodeHeight(byte height) { byte[] command = new byte[]{ (byte) 29, (byte) 104, height}; this.addArrayToCommand(command); } public void addSetBarcodeWidth(byte width) { byte[] command = new byte[]{ (byte)29, (byte)119, (byte)0}; if(width > 6) { width = 6; } if(width < 2) { width = 2; } command[2] = width; this.addArrayToCommand(command); } public void addSetKanjiFontMode(ENABLE DoubleWidth, ENABLE DoubleHeight, ENABLE Underline) { byte[] command = {28, 33, 0}; byte temp = 0; if (DoubleWidth == ENABLE.ON) { temp = (byte) (temp | 0x4); } if (DoubleHeight == ENABLE.ON) { temp = (byte) (temp | 0x8); } if (Underline == ENABLE.ON) { temp = (byte) (temp | 0x80); } command[2] = temp; addArrayToCommand(command); } /** * * @param bitmap 位图 * @param nWidth 打印宽度（可以用于缩放图片） * @param nMode 打印模式 0： 正常 1：倍宽 2：倍高 3：倍宽 倍高 */ public void addRastBitImage(Bitmap bitmap, int nWidth, int nMode) { if (bitmap != null) { int width = (nWidth + 7) / 8 * 8; int height = bitmap.getHeight() * width / bitmap.getWidth(); Bitmap grayBitmap = GpUtils.toGrayscale(bitmap); Bitmap rszBitmap = GpUtils.resizeImage(grayBitmap, width, height); byte[] src = GpUtils.bitmapToBWPix(rszBitmap); byte[] command = new byte[8]; height = src.length / width; command[0] = 29; command[1] = 118; command[2] = 48; command[3] = ((byte) (nMode & 0x1)); command[4] = ((byte) (width / 8 % 256)); command[5] = ((byte) (width / 8 / 256)); command[6] = ((byte) (height % 256)); command[7] = ((byte) (height / 256)); addArrayToCommand(command); byte[] codecontent = GpUtils.pixToEscRastBitImageCmd(src); for (int k = 0; k < codecontent.length; k++) { this.Command.add(Byte.valueOf(codecontent[k])); } } else { Log.d("BMP", "bmp. null "); } } public void addDownloadNvBitImage(Bitmap[] bitmap) { if (bitmap != null) { Log.d("BMP", "bitmap.length " + bitmap.length); int n = bitmap.length; if (n > 0) { byte[] command = new byte[3]; command[0] = 28; command[1] = 113; command[2] = ((byte) n); addArrayToCommand(command); for (int i = 0; i < n; i++) { int height = (bitmap[i].getHeight() + 7) / 8 * 8; int width = bitmap[i].getWidth() * height / bitmap[i].getHeight(); Bitmap grayBitmap = GpUtils.toGrayscale(bitmap[i]); Bitmap rszBitmap = GpUtils.resizeImage(grayBitmap, width, height); byte[] src = GpUtils.bitmapToBWPix(rszBitmap); height = src.length / width; Log.d("BMP", "bmp Width " + width); Log.d("BMP", "bmp height " + height); byte[] codecontent = GpUtils.pixToEscNvBitImageCmd(src, width, height); for (int k = 0; k < codecontent.length; k++) { this.Command.add(Byte.valueOf(codecontent[k])); } } } } else { Log.d("BMP", "bmp. null "); return; } } public void addPrintNvBitmap(byte n, byte mode) { byte[] command = {28, 112, 0, 0}; command[2] = n; command[3] = mode; addArrayToCommand(command); } public void addUPCA(String content) { byte[] command = new byte[4]; command[0] = 29; command[1] = 107; command[2] = 65; command[3] = 11; if (content.length() < command[3]) { return; } addArrayToCommand(command); addStrToCommand(content, 11); } public void addUPCE(String content) { byte[] command = new byte[4]; command[0] = 29; command[1] = 107; command[2] = 66; command[3] = 11; if (content.length() < command[3]) { return; } addArrayToCommand(command); addStrToCommand(content, command[3]); } public void addEAN13(String content) { byte[] command = new byte[4]; command[0] = 29; command[1] = 107; command[2] = 67; command[3] = 12; if (content.length() < command[3]) { return; } addArrayToCommand(command); Log.d("EscCommand", "content.length" + content.length()); addStrToCommand(content, command[3]); } public void addEAN8(String content) { byte[] command = new byte[4]; command[0] = 29; command[1] = 107; command[2] = 68; command[3] = 7; if (content.length() < command[3]) { return; } addArrayToCommand(command); addStrToCommand(content, command[3]); } @SuppressLint({ "DefaultLocale"}) public void addCODE39(String content) { byte[] command = new byte[4]; command[0] = 29; command[1] = 107; command[2] = 69; command[3] = ((byte) content.length()); content = content.toUpperCase(); addArrayToCommand(command); addStrToCommand(content, command[3]); } public void addITF(String content) { byte[] command = new byte[4]; command[0] = 29; command[1] = 107; command[2] = 70; command[3] = ((byte) content.length()); addArrayToCommand(command); addStrToCommand(content, command[3]); } public void addCODABAR(String content) { byte[] command = new byte[4]; command[0] = 29; command[1] = 107; command[2] = 71; command[3] = ((byte) content.length()); addArrayToCommand(command); addStrToCommand(content, command[3]); } public void addCODE93(String content) { byte[] command = new byte[4]; command[0] = 29; command[1] = 107; command[2] = 72; command[3] = ((byte) content.length()); addArrayToCommand(command); addStrToCommand(content, command[3]); } public void addCODE128(String content) { byte[] data = content.getBytes(); if (data[0] != 123) { byte[] command = new byte[]{ (byte)29, (byte)107, (byte)73, (byte)(content.length() + 2), (byte)123, (byte)66}; this.addArrayToCommand(command); } else { byte[] command = new byte[]{ (byte)29, (byte)107, (byte)73, (byte)content.length()}; this.addArrayToCommand(command); } this.addStrToCommand(content, content.length()); } /** * 功能：设置QRCode的单元模块大小 参数：n： 单元模块为n点 默认为3点 返回值：无 相关指令：GP58编程手册 GS ( k <Function 167> * @param n */ public void addSelectSizeOfModuleForQRCode(byte n) { byte[] command = { 29, 40, 107, 3, 0, 49, 67, 3}; command[7] = n; addArrayToCommand(command); } public void addSelectErrorCorrectionLevelForQRCode(byte n) { byte[] command = new byte[]{ 29, 40, 107, 3, 0, 49, 69, n}; addArrayToCommand(command); } public void addStoreQRCodeData(String content) { byte[] command = { 29, 40, 107, 0, 0, 49, 80, 48}; command[3] = ((byte) ((content.length() + 3) % 256)); command[4] = ((byte) ((content.length() + 3) / 256)); addArrayToCommand(command); addStrToCommand(content, content.length()); } public void addPrintQRCode() { byte[] command = { 29, 40, 107, 3, 0, 49, 81, 48}; addArrayToCommand(command); } public void addUserCommand(byte[] command) { addArrayToCommand(command); } }

--------------------

**工具类**

import android.graphics.Bitmap;
      import android.graphics.Canvas;
      import android.graphics.ColorMatrix;
      import android.graphics.ColorMatrixColorFilter;
      import android.graphics.Matrix;
      import android.graphics.Paint;
      import android.graphics.Bitmap.CompressFormat;
      import android.graphics.Bitmap.Config;
      import android.os.Environment;
      import java.io.File;
      import java.io.FileNotFoundException;
      import java.io.FileOutputStream;
      import java.io.IOException;
      import java.io.UnsupportedEncodingException;
    
    public class GpUtils { private static int[] p0 = new int[]{0, 128}; private static int[] p1 = new int[]{0, 64}; private static int[] p2 = new int[]{0, 32}; private static int[] p3 = new int[]{0, 16}; private static int[] p4 = new int[]{0, 8}; private static int[] p5 = new int[]{0, 4}; private static int[] p6 = new int[]{0, 2}; private static int[][] Floyd16x16 = new int[][]{ {0, 128, 32, 160, 8, 136, 40, 168, 2, 130, 34, 162, 10, 138, 42, 170}, {192, 64, 224, 96, 200, 72, 232, 104, 194, 66, 226, 98, 202, 74, 234, 106}, {48, 176, 16, 144, 56, 184, 24, 152, 50, 178, 18, 146, 58, 186, 26, 154}, {240, 112, 208, 80, 248, 120, 216, 88, 242, 114, 210, 82, 250, 122, 218, 90}, {12, 140, 44, 172, 4, 132, 36, 164, 14, 142, 46, 174, 6, 134, 38, 166}, {204, 76, 236, 108, 196, 68, 228, 100, 206, 78, 238, 110, 198, 70, 230, 102}, {60, 188, 28, 156, 52, 180, 20, 148, 62, 190, 30, 158, 54, 182, 22, 150}, {252, 124, 220, 92, 244, 116, 212, 84, 254, 126, 222, 94, 246, 118, 214, 86}, {3, 131, 35, 163, 11, 139, 43, 171, 1, 129, 33, 161, 9, 137, 41, 169}, {195, 67, 227, 99, 203, 75, 235, 107, 193, 65, 225, 97, 201, 73, 233, 105}, {51, 179, 19, 147, 59, 187, 27, 155, 49, 177, 17, 145, 57, 185, 25, 153}, {243, 115, 211, 83, 251, 123, 219, 91, 241, 113, 209, 81, 249, 121, 217, 89}, {15, 143, 47, 175, 7, 135, 39, 167, 13, 141, 45, 173, 5, 133, 37, 165}, {207, 79, 239, 111, 199, 71, 231, 103, 205, 77, 237, 109, 197, 69, 229, 101}, {63, 191, 31, 159, 55, 183, 23, 151, 61, 189, 29, 157, 53, 181, 21, 149}, {254, 127, 223, 95, 247, 119, 215, 87, 253, 125, 221, 93, 245, 117, 213, 85}}; private static int[][] Floyd8x8 = new int[][]{ {0, 32, 8, 40, 2, 34, 10, 42}, {48, 16, 56, 24, 50, 18, 58, 26}, {12, 44, 4, 36, 14, 46, 6, 38}, {60, 28, 52, 20, 62, 30, 54, 22}, {3, 35, 11, 43, 1, 33, 9, 41}, {51, 19, 59, 27, 49, 17, 57, 25}, {15, 47, 7, 39, 13, 45, 5, 37}, {63, 31, 55, 23, 61, 29, 53, 21}}; public static final int ALGORITHM_DITHER_16x16 = 16; public static final int ALGORITHM_DITHER_8x8 = 8; public static final int ALGORITHM_TEXTMODE = 2; public static final int ALGORITHM_GRAYTEXTMODE = 1; public GpUtils() { } public static Bitmap resizeImage(Bitmap bitmap, int w, int h) { int width = bitmap.getWidth(); int height = bitmap.getHeight(); float scaleWidth = (float)w / (float)width; float scaleHeight = (float)h / (float)height; Matrix matrix = new Matrix(); matrix.postScale(scaleWidth, scaleHeight); Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true); return resizedBitmap; } public static void saveMyBitmap(Bitmap mBitmap) { File f = new File(Environment.getExternalStorageDirectory().getPath(), "Btatotest.jpeg"); try { f.createNewFile(); } catch (IOException var6) { ; } FileOutputStream fOut = null; try { fOut = new FileOutputStream(f); mBitmap.compress(CompressFormat.PNG, 100, fOut); fOut.flush(); fOut.close(); } catch (FileNotFoundException var4) { ; } catch (IOException var5) { ; } } public static Bitmap toGrayscale(Bitmap bmpOriginal) { int height = bmpOriginal.getHeight(); int width = bmpOriginal.getWidth(); Bitmap bmpGrayscale = Bitmap.createBitmap(width, height, Config.RGB_565); Canvas c = new Canvas(bmpGrayscale); Paint paint = new Paint(); ColorMatrix cm = new ColorMatrix(); cm.setSaturation(0.0F); ColorMatrixColorFilter f = new ColorMatrixColorFilter(cm); paint.setColorFilter(f); c.drawBitmap(bmpOriginal, 0.0F, 0.0F, paint); return bmpGrayscale; } static byte[] pixToEscRastBitImageCmd(byte[] src, int nWidth, int nMode) { int nHeight = src.length / nWidth; byte[] data = new byte[8 + src.length / 8]; data[0] = 29; data[1] = 118; data[2] = 48; data[3] = (byte)(nMode & 1); data[4] = (byte)(nWidth / 8 % 256); data[5] = (byte)(nWidth / 8 / 256); data[6] = (byte)(nHeight % 256); data[7] = (byte)(nHeight / 256); int i = 8; for(int k = 0; i < data.length; ++i) { data[i] = (byte)(p0[src[k]] + p1[src[k + 1]] + p2[src[k + 2]] + p3[src[k + 3]] + p4[src[k + 4]] + p5[src[k + 5]] + p6[src[k + 6]] + src[k + 7]); k += 8; } return data; } public static byte[] pixToEscRastBitImageCmd(byte[] src) { byte[] data = new byte[src.length / 8]; int i = 0; for(int k = 0; i < data.length; ++i) { data[i] = (byte)(p0[src[k]] + p1[src[k + 1]] + p2[src[k + 2]] + p3[src[k + 3]] + p4[src[k + 4]] + p5[src[k + 5]] + p6[src[k + 6]] + src[k + 7]); k += 8; } return data; } static byte[] pixToEscNvBitImageCmd(byte[] src, int width, int height) { byte[] data = new byte[src.length / 8 + 4]; data[0] = (byte)(width / 8 % 256); data[1] = (byte)(width / 8 / 256); data[2] = (byte)(height / 8 % 256); data[3] = (byte)(height / 8 / 256); boolean k = false; for(int i = 0; i < width; ++i) { int var7 = 0; for(int j = 0; j < height / 8; ++j) { data[4 + j + i * height / 8] = (byte)(p0[src[i + var7]] + p1[src[i + var7 + 1 * width]] + p2[src[i + var7 + 2 * width]] + p3[src[i + var7 + 3 * width]] + p4[src[i + var7 + 4 * width]] + p5[src[i + var7 + 5 * width]] + p6[src[i + var7 + 6 * width]] + src[i + var7 + 7 * width]); var7 += 8 * width; } } return data; } public static byte[] pixToTscCmd(byte[] src) { byte[] data = new byte[src.length / 8]; int k = 0; for(int j = 0; k < data.length; ++k) { byte temp = (byte)(p0[src[j]] + p1[src[j + 1]] + p2[src[j + 2]] + p3[src[j + 3]] + p4[src[j + 4]] + p5[src[j + 5]] + p6[src[j + 6]] + src[j + 7]); data[k] = (byte)(~temp); j += 8; } return data; } public static byte[] pixToTscCmd(int x, int y, int mode, byte[] src, int nWidth) { int height = src.length / nWidth; int width = nWidth / 8; String str = "BITMAP " + x + "," + y + "," + width + "," + height + "," + mode + ","; byte[] bitmap = null; try { bitmap = str.getBytes("GB2312"); } catch (UnsupportedEncodingException var13) { var13.printStackTrace(); } byte[] arrayOfByte = new byte[src.length / 8]; int data = 0; for(int j = 0; data < arrayOfByte.length; ++data) { byte temp = (byte)(p0[src[j]] + p1[src[j + 1]] + p2[src[j + 2]] + p3[src[j + 3]] + p4[src[j + 4]] + p5[src[j + 5]] + p6[src[j + 6]] + src[j + 7]); arrayOfByte[data] = (byte)(~temp); j += 8; } byte[] var14 = new byte[bitmap.length + arrayOfByte.length]; System.arraycopy(bitmap, 0, var14, 0, bitmap.length); System.arraycopy(arrayOfByte, 0, var14, bitmap.length, arrayOfByte.length); return var14; } private static void format_K_dither16x16(int[] orgpixels, int xsize, int ysize, byte[] despixels) { int k = 0; for(int y = 0; y < ysize; ++y) { for(int x = 0; x < xsize; ++x) { if((orgpixels[k] & 255) > Floyd16x16[x & 15][y & 15]) { despixels[k] = 0; } else { despixels[k] = 1; } ++k; } } } public static byte[] bitmapToBWPix(Bitmap mBitmap) { int[] pixels = new int[mBitmap.getWidth() * mBitmap.getHeight()]; byte[] data = new byte[mBitmap.getWidth() * mBitmap.getHeight()]; Bitmap grayBitmap = toGrayscale(mBitmap); grayBitmap.getPixels(pixels, 0, mBitmap.getWidth(), 0, 0, mBitmap.getWidth(), mBitmap.getHeight()); format_K_dither16x16(pixels, grayBitmap.getWidth(), grayBitmap.getHeight(), data); return data; } private static void format_K_dither16x16_int(int[] orgpixels, int xsize, int ysize, int[] despixels) { int k = 0; for(int y = 0; y < ysize; ++y) { for(int x = 0; x < xsize; ++x) { if((orgpixels[k] & 255) > Floyd16x16[x & 15][y & 15]) { despixels[k] = -1; } else { despixels[k] = -16777216; } ++k; } } } private static void format_K_dither8x8_int(int[] orgpixels, int xsize, int ysize, int[] despixels) { int k = 0; for(int y = 0; y < ysize; ++y) { for(int x = 0; x < xsize; ++x) { if((orgpixels[k] & 255) >> 2 > Floyd8x8[x & 7][y & 7]) { despixels[k] = -1; } else { despixels[k] = -16777216; } ++k; } } } public static int[] bitmapToBWPix_int(Bitmap mBitmap, int algorithm) { int[] pixels = new int[0]; Bitmap grayBitmap; switch(algorithm) { case 2:
            break;
          case 8:
            grayBitmap = toGrayscale(mBitmap);
            pixels = new int[grayBitmap.getWidth() * grayBitmap.getHeight()];
            grayBitmap.getPixels(pixels, 0, grayBitmap.getWidth(), 0, 0, grayBitmap.getWidth(), grayBitmap.getHeight());
            format_K_dither8x8_int(pixels, grayBitmap.getWidth(), grayBitmap.getHeight(), pixels);
            break;
          case 16:
          default:
            grayBitmap = toGrayscale(mBitmap);
            pixels = new int[grayBitmap.getWidth() * grayBitmap.getHeight()];
            grayBitmap.getPixels(pixels, 0, grayBitmap.getWidth(), 0, 0, grayBitmap.getWidth(), grayBitmap.getHeight());
            format_K_dither16x16_int(pixels, grayBitmap.getWidth(), grayBitmap.getHeight(), pixels);
        }
    
        return pixels;
      }
    
      public static Bitmap toBinaryImage(Bitmap mBitmap, int nWidth, int algorithm) {
        int width = (nWidth + 7) / 8 * 8;
        int height = mBitmap.getHeight() * width / mBitmap.getWidth();
        Bitmap rszBitmap = resizeImage(mBitmap, width, height);
        int[] pixels = bitmapToBWPix_int(rszBitmap, algorithm);
        rszBitmap.setPixels(pixels, 0, width, 0, 0, width, height);
        return rszBitmap;
      }
    }

**参考以下指令集**

【esc/pos打印指令 （小寿转载）-xiaoshou330-ChinaUnix博客】 [http://m.blog.chinaunix.net/uid-7491192-id-2051201.html][http_m.blog.chinaunix.net_uid-7491192-id-2051201.html]

【esc打印控制命令集 - 豆丁网】  
[http://m.docin.com/p2-1229264477.html][http_m.docin.com_p2-1229264477.html]

android 控制POS机图文打印（二）  
[http://blog.csdn.net/sdvch/article/details/45096057][http_blog.csdn.net_sdvch_article_details_45096057]

Android 蓝牙连接 ESC/POS 热敏打印机打印（ESC/POS指令篇）  
[http://www.jianshu.com/p/c0b6d1a4823b][http_www.jianshu.com_p_c0b6d1a4823b]

[http_m.blog.chinaunix.net_uid-7491192-id-2051201.html]: http://m.blog.chinaunix.net/uid-7491192-id-2051201.html
[http_m.docin.com_p2-1229264477.html]: http://m.docin.com/p2-1229264477.html
[http_blog.csdn.net_sdvch_article_details_45096057]: http://blog.csdn.net/sdvch/article/details/45096057
[http_www.jianshu.com_p_c0b6d1a4823b]: http://www.jianshu.com/p/c0b6d1a4823b