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