安卓开发ESC/POS打印机打印

ESC/POS打印机打印

主要记录一下主要代码
一、设置文字对齐:
mWriter.write(0x1b);
mWriter.write(0x61);
mWriter.write(alignment);// 0:左对齐，1：居中，2：右对齐
二、字体大小
mWriter.write(0x1b);
mWriter.write(0x21);
mWriter.write(30);//传多大显示多大
还有图片等等直接附上工具类吧:
public class PrintUtil {

private OutputStreamWriter mWriter = null;
private OutputStream mOutputStream = null;public final static int WIDTH_PIXEL = 384;
public final static int IMAGE_SIZE = 320;
private static Map<String, String> mapList = null;/*** 初始化Pos实例** @param encoding 编码* @throws IOException*/
public PrintUtil(OutputStream outputStream, String encoding) throws IOException {mWriter = new OutputStreamWriter(outputStream, encoding);mOutputStream = outputStream;initPrinter();
}public void print(byte[] bs) throws IOException {mOutputStream.write(bs);
}public void printRawBytes(byte[] bytes) throws IOException {mOutputStream.write(bytes);mOutputStream.flush();
}/*** 初始化打印机** @throws IOException*/
public void initPrinter() throws IOException {mWriter.write(0x1B);mWriter.write(0x40);mWriter.flush();
}/*** 打印换行** @return length 需要打印的空行数* @throws IOException*/
public void printLine(int lineNum) throws IOException {for (int i = 0; i < lineNum; i++) {mWriter.write("\n");}mWriter.flush();
}/*** 打印换行(只换一行)** @throws IOException*/
public void printLine() throws IOException {printLine(1);
}/*** 打印空白(一个Tab的位置，约4个汉字)** @param length 需要打印空白的长度,* @throws IOException*/
public void printTabSpace(int length) throws IOException {for (int i = 0; i < length; i++) {mWriter.write("\t");}mWriter.flush();
}/*** 绝对打印位置** @return* @throws IOException*/
public byte[] setLocation(int offset) throws IOException {byte[] bs = new byte[4];bs[0] = 0x1B;bs[1] = 0x24;bs[2] = (byte) (offset % 256);bs[3] = (byte) (offset / 256);return bs;
}public byte[] getGbk(String stText) throws IOException {byte[] returnText = stText.getBytes("GBK"); // 必须放在try内才可以return returnText;
}private int getStringPixLength(String str) {int pixLength = 0;char c;for (int i = 0; i < str.length(); i++) {c = str.charAt(i);if (Pinyin.isChinese(c)) {pixLength += 24;} else {pixLength += 12;}}return pixLength;
}public int getOffset(String str) {return WIDTH_PIXEL - getStringPixLength(str);
}/*** 打印文字** @param text* @throws IOException*/
public void printText(String text) throws IOException {mWriter.write(text);mWriter.flush();
}/*** 对齐0:左对齐，1：居中，2：右对齐*/
public void printAlignment(int alignment) throws IOException {mWriter.write(0x1b);mWriter.write(0x61);mWriter.write(alignment);
}public void printLargeText(String text) throws IOException {mWriter.write(0x1b);mWriter.write(0x21);mWriter.write(30);mWriter.write(text);mWriter.write(0x1b);mWriter.write(0x21);mWriter.write(0);mWriter.flush();
}public void printTwoColumn(String title, String content) throws IOException {int iNum = 0;byte[] byteBuffer = new byte[100];byte[] tmp;tmp = getGbk(title);System.arraycopy(tmp, 0, byteBuffer, iNum, tmp.length);iNum += tmp.length;tmp = setLocation(getOffset(content));System.arraycopy(tmp, 0, byteBuffer, iNum, tmp.length);iNum += tmp.length;tmp = getGbk(content);System.arraycopy(tmp, 0, byteBuffer, iNum, tmp.length);print(byteBuffer);
}public void printThreeColumn(String left, String middle, String right) throws IOException {int iNum = 0;byte[] byteBuffer = new byte[200];byte[] tmp = new byte[0];System.arraycopy(tmp, 0, byteBuffer, iNum, tmp.length);iNum += tmp.length;tmp = getGbk(left);System.arraycopy(tmp, 0, byteBuffer, iNum, tmp.length);iNum += tmp.length;int pixLength = getStringPixLength(left) % WIDTH_PIXEL;if (pixLength > WIDTH_PIXEL / 2 || pixLength == 0) {middle = "\n\t\t" + middle;}tmp = setLocation(192);System.arraycopy(tmp, 0, byteBuffer, iNum, tmp.length);iNum += tmp.length;tmp = getGbk(middle);System.arraycopy(tmp, 0, byteBuffer, iNum, tmp.length);iNum += tmp.length;tmp = setLocation(getOffset(right));System.arraycopy(tmp, 0, byteBuffer, iNum, tmp.length);iNum += tmp.length;tmp = getGbk(right);System.arraycopy(tmp, 0, byteBuffer, iNum, tmp.length);print(byteBuffer);
}public void printDashLine() throws IOException {printText("--------------------------------");
}public void printBitmap(Bitmap bmp) throws IOException {bmp = compressPic(bmp);byte[] bmpByteArray = draw2PxPoint(bmp);printRawBytes(bmpByteArray);
}/************************************************************************** 假设一个360*360的图片，分辨率设为24, 共分15行打印 每一行,是一个 360 * 24 的点阵,y轴有24个点,存储在3个byte里面。* 即每个byte存储8个像素点信息。因为只有黑白两色，所以对应为1的位是黑色，对应为0的位是白色**************************************************************************/
private byte[] draw2PxPoint(Bitmap bmp) {//先设置一个足够大的size，最后在用数组拷贝复制到一个精确大小的byte数组中int size = bmp.getWidth() * bmp.getHeight() / 8 + 1000;byte[] tmp = new byte[size];int k = 0;// 设置行距为0tmp[k++] = 0x1B;tmp[k++] = 0x33;tmp[k++] = 0x00;// 居中打印tmp[k++] = 0x1B;tmp[k++] = 0x61;tmp[k++] = 1;for (int j = 0; j < bmp.getHeight() / 24f; j++) {tmp[k++] = 0x1B;tmp[k++] = 0x2A;// 0x1B 2A 表示图片打印指令tmp[k++] = 33; // m=33时，选择24点密度打印tmp[k++] = (byte) (bmp.getWidth() % 256); // nLtmp[k++] = (byte) (bmp.getWidth() / 256); // nHfor (int i = 0; i < bmp.getWidth(); i++) {for (int m = 0; m < 3; m++) {for (int n = 0; n < 8; n++) {byte b = px2Byte(i, j * 24 + m * 8 + n, bmp);tmp[k] += tmp[k] + b;}k++;}}tmp[k++] = 10;// 换行}// 恢复默认行距tmp[k++] = 0x1B;tmp[k++] = 0x32;byte[] result = new byte[k];System.arraycopy(tmp, 0, result, 0, k);return result;
}/*** 图片二值化，黑色是1，白色是0** @param x   横坐标* @param y   纵坐标* @param bit 位图* @return*/
private byte px2Byte(int x, int y, Bitmap bit) {if (x < bit.getWidth() && y < bit.getHeight()) {byte b;int pixel = bit.getPixel(x, y);int red = (pixel & 0x00ff0000) >> 16; // 取高两位int green = (pixel & 0x0000ff00) >> 8; // 取中两位int blue = pixel & 0x000000ff; // 取低两位int gray = RGB2Gray(red, green, blue);if (gray < 128) {b = 1;} else {b = 0;}return b;}return 0;
}/*** 图片灰度的转化*/
private int RGB2Gray(int r, int g, int b) {int gray = (int) (0.29900 * r + 0.58700 * g + 0.11400 * b); // 灰度转化公式return gray;
}/*** 对图片进行压缩（去除透明度）** @param bitmapOrg*/
private Bitmap compressPic(Bitmap bitmapOrg) {// 获取这个图片的宽和高int width = bitmapOrg.getWidth();int height = bitmapOrg.getHeight();// 定义预转换成的图片的宽度和高度int newWidth = IMAGE_SIZE;int newHeight = IMAGE_SIZE;Bitmap targetBmp = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);Canvas targetCanvas = new Canvas(targetBmp);targetCanvas.drawColor(0xffffffff);targetCanvas.drawBitmap(bitmapOrg, new Rect(0, 0, width, height), new Rect(0, 0, newWidth, newHeight), null);return targetBmp;
}//数据格式  如:日期：2019-12-04
public static void printTest(Context context, String jsonStr, List<PrintBean> list, BluetoothSocket bluetoothSocket) {try {mapList = null;mapList = GsonUtils.toObject(jsonStr, new TypeToken<Map<String,String>>(){}.getType());if (mapList == null){Toast.showLong(context,"打印数据为空");return;}PrintUtil pUtil = new PrintUtil(bluetoothSocket.getOutputStream(), "GBK");// 店铺名 居中 放大 0:左对齐，1：居中，2：右对齐pUtil.printAlignment(1);pUtil.printLargeText(SPUtils.getCompanyName(context));pUtil.printLine(2);pUtil.printAlignment(1);pUtil.printText(mapList.get("title"));//表单名称pUtil.printLine();pUtil.printAlignment(0);pUtil.printLine();// 分隔线pUtil.printDashLine();pUtil.printLine();if (!TextUtils.isEmpty(mapList.get("date"))) {pUtil.printText(mapList.get("date"));//表单时间pUtil.printLine();}if (!TextUtils.isEmpty(mapList.get("code"))) {pUtil.printText(mapList.get("code"));//表单编号pUtil.printLine();}if (!TextUtils.isEmpty(mapList.get("name"))) {pUtil.printText(mapList.get("name"));//表单主题或者名称pUtil.printLine();}if (!TextUtils.isEmpty(mapList.get("client"))) {pUtil.printText(mapList.get("client").replace("null", ""));//表单客户pUtil.printLine();}if (!TextUtils.isEmpty(mapList.get("contacts"))) {pUtil.printText(mapList.get("contacts").replace("null", ""));//表单联系人pUtil.printLine();}if (!TextUtils.isEmpty(mapList.get("enddate"))) {pUtil.printText(mapList.get("enddate").replace("null", ""));//表单发货日期或者结束日期pUtil.printLine();}if (!TextUtils.isEmpty(mapList.get("possibility"))){pUtil.printText(mapList.get("possibility").replace("null",""));//表单可能性pUtil.printLine();}if (!TextUtils.isEmpty(mapList.get("money"))) {pUtil.printText(mapList.get("money").replace("null",""));//表单金额pUtil.printLine();}if (!TextUtils.isEmpty(mapList.get("emp"))) {pUtil.printText(mapList.get("emp").replace("null", ""));//表单业务员pUtil.printLine();}if (!TextUtils.isEmpty(mapList.get("remark"))) {pUtil.printText(mapList.get("remark").replace("null", ""));//表单摘要或者备注pUtil.printLine();}// 分隔线pUtil.printDashLine();pUtil.printLine();if (list!=null&&list.size()>0){for (int i=0;i<list.size();i++){pUtil.printText(list.get(i).getName());//明细名称pUtil.printLine();pUtil.printAlignment(1);pUtil.printText("   "+list.get(i).getShuliang()+"  "+list.get(i).getDanjia());pUtil.printLine();pUtil.printText("   "+list.get(i).getSuilv()+"  "+list.get(i).getJine());pUtil.printLine();}}pUtil.printAlignment(0);// 分隔线pUtil.printDashLine();pUtil.printLine();if (!TextUtils.isEmpty(mapList.get("total"))) {pUtil.printText(mapList.get("total").replace("null", ""));//表单合计}pUtil.printLine(4);pUtil.printAlignment(1);pUtil.printText("打印人："+SPUtils.getOperato(context));//打印人pUtil.printLine();pUtil.printText("打印日期:"+DateUtils.getCurrentTime());//打印日期pUtil.printLine();//   pUtil.printDashLine();

//
// pUtil.printBitmap(bitmap);
//
pUtil.printLine(4);

    } catch (IOException e) {}
}//数据格式  如:日期：2019-12-04
public static void printTestLin(Context context, String jsonStr, List<String> list, BluetoothSocket bluetoothSocket) {try {mapList = null;mapList = GsonUtils.toObject(jsonStr, new TypeToken<Map<String,String>>(){}.getType());if (mapList == null){Toast.showLong(context,"打印数据为空");return;}PrintUtil pUtil = new PrintUtil(bluetoothSocket.getOutputStream(), "GBK");// 店铺名 居中 放大 0:左对齐，1：居中，2：右对齐pUtil.printAlignment(1);pUtil.printLargeText(SPUtils.getCompanyName(context));pUtil.printLine(2);pUtil.printAlignment(1);pUtil.printText(mapList.get("title"));//表单名称pUtil.printLine();pUtil.printDashLine();pUtil.printLine();pUtil.printAlignment(0);pUtil.printLine();if (list!=null&&list.size()>0){for (int i=0;i<list.size();i++){pUtil.printText(list.get(i));//明细名称pUtil.printLine();}}pUtil.printLine(4);pUtil.printAlignment(1);pUtil.printText("打印人："+SPUtils.getOperato(context));//打印人pUtil.printLine();pUtil.printText("打印日期:"+DateUtils.getCurrentTime());//打印日期pUtil.printLine();//   pUtil.printDashLine();

//
// pUtil.printBitmap(bitmap);
//
pUtil.printLine(4);

    } catch (IOException e) {}
}

}

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