一、说明
比如：商品名、单价、数量、金额，它们的排列需要像表格一样对齐。
二、实现
主要用到的API：
// 设置单位距离esc.addSetHorAndVerMotionUnits((byte) 7, (byte) 0);// 移动的距离（距离 = 单位 * position设定值)esc.addSetAbsolutePrintPosition(20);
但这个对齐其实是有问题的，它的值的计算可以参考《佳博热敏票据打印机编程手册》，文档给出的是你将移动单位长度设置为7，这个长度大约等于1个字的长度，但是不够精准，其实际长度略有偏差，比较坑的一点就是这个距离并不能设定为小数，只能精确到整数位，我的做法是将单位长度设定为整个字的1/3，这样就可以更加精准一些。
public static final short PRINT_POSITION_0 = 0;public static final short PRINT_POSITION_1 = 26 * 3;public static final short PRINT_POSITION_2 = 32 * 3;public static final short PRINT_POSITION_3 = 42 * 3;public static final int MAX_GOODS_NAME_LENGTH = 22 * 3;// 将unit设置为这个单位值，其实际距离大约是一个字的1/3public static final short PRINT_UNIT = 43;
// 商品头信息esc.addSetHorAndVerMotionUnits((byte) PRINT_UNIT, (byte) 0);esc.addText("商品名");esc.addSetAbsolutePrintPosition(PRINT_POSITION_1);esc.addText("单价");esc.addSetAbsolutePrintPosition(PRINT_POSITION_2);esc.addText("数量");esc.addSetAbsolutePrintPosition(PRINT_POSITION_3);esc.addText("金额");
在这样的设置下，基本可以对齐并占满整个小票打印纸，而具体的商品信息你则可以以这些位置为基准进行具体放置。
三、贴上格式化的全部代码
public class PrintSplitUtil {private static final String PRINT_LINE = "------------------------------------------------\n";public static final int PRINT_TOTAL_LENGTH = 48 * 3;public static final short PRINT_POSITION_0 = 0;public static final short PRINT_POSITION_1 = 26 * 3;public static final short PRINT_POSITION_2 = 32 * 3;public static final short PRINT_POSITION_3 = 42 * 3;public static final int MAX_GOODS_NAME_LENGTH = 22 * 3;public static final short PRINT_UNIT = 43;public static PrinterSplitInfo getPrintText(Context context, GoodsListInfo goodsInfo, String store, String userMobile, String qrCode) {PrinterSplitInfo printerSplitInfo = new PrinterSplitInfo();EscCommand esc = new EscCommand();esc.addInitializePrinter();// 顶部图片esc.addSelectJustification(JUSTIFICATION.CENTER);Bitmap b = BitmapFactory.decodeResource(context.getResources(), R.mipmap.printer_logo);esc.addRastBitImage(b, 200, 0); // 打印图片esc.addPrintAndLineFeed();esc.addText(PRINT_LINE);// 订单信息if (!TextUtils.isEmpty(store)) {esc.addSelectJustification(JUSTIFICATION.LEFT);esc.addSelectPrintModes(FONT.FONTA, ENABLE.ON, ENABLE.OFF, ENABLE.OFF, ENABLE.OFF);esc.addText(store + "\n"); // 打印文字}esc.addSelectJustification(JUSTIFICATION.LEFT);esc.addSelectPrintModes(FONT.FONTA, ENABLE.OFF, ENABLE.OFF, ENABLE.OFF, ENABLE.OFF);// 头部信息esc.addText("打印编号：" + goodsInfo.express_sn);esc.addPrintAndLineFeed();esc.addText("操作时间：" + DateTimeUtil.getCurrentDateTime());esc.addPrintAndLineFeed();esc.addText("操作员：" + userMobile);esc.addPrintAndLineFeed();esc.addText(PRINT_LINE);// 商品头信息esc.addSetHorAndVerMotionUnits((byte) PRINT_UNIT, (byte) 0);esc.addText("商品名");esc.addSetAbsolutePrintPosition(PRINT_POSITION_1);esc.addText("单价");esc.addSetAbsolutePrintPosition(PRINT_POSITION_2);esc.addText("数量");esc.addSetAbsolutePrintPosition(PRINT_POSITION_3);esc.addText("金额");esc.addPrintAndLineFeed();// 商品信息if (goodsInfo.goods_list != null && goodsInfo.goods_list.size() > 0) {esc.addSelectPrintModes(FONT.FONTA, ENABLE.OFF, ENABLE.ON, ENABLE.OFF, ENABLE.OFF);for (int i = 0; i < goodsInfo.goods_list.size(); i++) {GoodsListInfo.GoodsListBean goods = goodsInfo.goods_list.get(i);String[] goodsNames = SubByteString.getSubedStrings(goods.goods_name, 20);printerSplitInfo.dataRow += goodsNames.length;// 商品名称if (goodsNames != null && goodsNames.length > 0) {esc.addText((i + 1) + "." + goodsNames[0]);} else {esc.addText((i + 1) + "." + goods.goods_name);}esc.addSetHorAndVerMotionUnits((byte) PRINT_UNIT, (byte) 0);// 单价short priceLength = (short) goods.goods_price.length();short pricePosition = (short) (PRINT_POSITION_1 + 12 - priceLength * 3);esc.addSetAbsolutePrintPosition(pricePosition);esc.addText(goods.goods_price);// 单价还未获取// 数量short numLength = (short) (goods.goods_num + goods.goods_unit).getBytes().length;short numPosition = (short) (PRINT_POSITION_2 + 14 - numLength * 3);esc.addSetAbsolutePrintPosition(numPosition);esc.addText(goods.goods_num + goods.goods_unit);// 金额short amountLength = (short) goods.goods_amount.replace(" ", "").getBytes().length;short amountPosition = (short) (PRINT_POSITION_3 + 11 - amountLength * 3);esc.addSetAbsolutePrintPosition(amountPosition);esc.addText(goods.goods_amount);if (goodsNames == null || goodsNames.length == 0) {esc.addPrintAndLineFeed();} else if (goodsNames != null && goodsNames.length > 1) {for (int j = 1; j < goodsNames.length; j++) {esc.addText("" + goodsNames[j]);esc.addPrintAndLineFeed();}}}esc.addSelectPrintModes(FONT.FONTA, ENABLE.OFF, ENABLE.OFF, ENABLE.OFF, ENABLE.OFF);esc.addText(PRINT_LINE);}// 总计信息esc.addSelectJustification(JUSTIFICATION.RIGHT);// 设置打印居右if (!TextUtils.isEmpty(goodsInfo.subsidy)) {esc.addText("优惠补贴：" + goodsInfo.subsidy + "元\n");}if (!TextUtils.isEmpty(goodsInfo.goods_amount)) {esc.addText("金额总计：" + goodsInfo.goods_amount + "元\n");}if (!TextUtils.isEmpty(goodsInfo.order_amount)) {esc.addText("还需支付：" + goodsInfo.order_amount + "元\n");}esc.addText(PRINT_LINE);// 打印二维码if (!TextUtils.isEmpty(qrCode)) {esc.addPrintAndLineFeed();esc.addSelectJustification(JUSTIFICATION.CENTER);// 设置打印居中esc.addText("请打开微信，扫码付款\n");esc.addPrintAndLineFeed();// 48 49 50 51esc.addSelectErrorCorrectionLevelForQRCode((byte) 0x31); // 设置纠错等级esc.addSelectSizeOfModuleForQRCode((byte) 7);// 设置qrcode模块大小esc.addStoreQRCodeData(qrCode);// 设置qrcode内容esc.addPrintQRCode();// 打印QRCodeesc.addPrintAndLineFeed();esc.addText("请将二维码放平整后再扫码\n");}esc.addPrintAndFeedLines((byte) 3);// 加入查询打印机状态，打印完成后，此时会接收到GpCom.ACTION_DEVICE_STATUS广播esc.addQueryPrinterStatus();// 最终数据Vector<Byte> datas = esc.getCommand();byte[] bytes = GpUtils.ByteTo_byte(datas);String result = Base64.encodeToString(bytes, Base64.DEFAULT);printerSplitInfo.data = result;return printerSplitInfo;}}
