【Android】Android 集成商米内置打印机打印票据

• 【Android】Android 集成商米内置打印机打印票据
• • 1、集成商米打印依赖
  • 2、规范接口接口
  • 3、使用到的相关对象以及工具类
  • 4、MainActivity初始化接口
  • 5、Uniapp调用方法
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也可以去Maven看一下有没得最新的版本

implementation group: 'com.google.code.gson', name: 'gson', version: '2.8.7'

implementation group: 'com.sunmi', name: 'printerlibrary', version: '1.0.14'

个人习惯，先写接口，再写功能实现类

import android.content.Context;


public interface SunMiPrintingService {

    
    void bindServicePrinting();
  
    
    void beforeOrderPrinting(String param);

}

实现接口

public class SunMiPrintingServiceImpl implements SunMiPrintingService {

    private SunmiPrinterService sunmiPrinterService;

    
    @Override
    @JavascriptInterface
    public void bindServicePrinting() {
        try {
            boolean result = InnerPrinterManager.getInstance().bindService(MainActivity.CONTEXT, new InnerPrinterCallback() {
                @Override
                protected void onConnected(SunmiPrinterService service) {
                    //这⾥即获取到绑定服务成功连接后的远程服务接⼝句柄
                    //可以通过service调⽤⽀持的打印⽅法
                    if (service != null) {
                        sunmiPrinterService = service;
                    }
                }

                @Override
                protected void onDisconnected() {
                    //当服务异常断开后，会回调此⽅法，建议在此做重连策略
                }
            });
            if (!result) {
                Toast.makeText(MainActivity.CONTEXT, "没有绑定到服务，请检查机型是否支持", Toast.LENGTH_LONG).show();
            } else {
                Toast.makeText(MainActivity.CONTEXT, "打印机连接成功", Toast.LENGTH_LONG).show();
            }
        } catch (InnerPrinterException e) {
            e.printStackTrace();
        }
    }

    
    @Override
    @JavascriptInterface
    public void beforeOrderPrinting(String param) {
        System.out.println("预结单参数：" + param);
        if (param.isEmpty()) {
            Toast.makeText(MainActivity.CONTEXT, "打印参数不能为空", Toast.LENGTH_LONG).show();
        }
        OrderPrinting entity = new Gson().fromJson(param, OrderPrinting.class);
        try {
            if (sunmiPrinterService == null) {
                Toast.makeText(MainActivity.CONTEXT, "商米打印机：打印对象为空", Toast.LENGTH_LONG).show();
                return;
            }

            if (entity.getOrderDetailList().isEmpty()) {
                Toast.makeText(MainActivity.CONTEXT, "商米打印机：商品为空", Toast.LENGTH_LONG).show();
                return;
            }

            sunmiPrinterService.printerInit(null);
            int paper = sunmiPrinterService.getPrinterPaper();
            sunmiPrinterService.setAlignment(1, null);
            sunmiPrinterService.printTextWithFont("预结账单 " + entity.getTakeOrderNumber() + "n", null, 48F, null);
            sunmiPrinterService.printTextWithFont(entity.getStoreName() + "n", null, 40F, null);
            sunmiPrinterService.printText("    n", null);
            setInterval(paper);
            sunmiPrinterService.setAlignment(0, null);
            sunmiPrinterService.setPrinterStyle(WoyouConsts.SET_LINE_SPACING, 0);
            sunmiPrinterService.printText("    n", null);
            sunmiPrinterService.printTextWithFont("桌台号：" + entity.getDeskName() + "n", null, 28F, null);
            sunmiPrinterService.printText("    n", null);
            sunmiPrinterService.printTextWithFont("配送类型：" + entity.getDeskType() + "n", null, 28F, null);
            sunmiPrinterService.printText("    n", null);
            sunmiPrinterService.printTextWithFont("订单号：" + entity.getOrderNumber() + "n", null, 28F, null);
            sunmiPrinterService.printText("    n", null);
            setInterval(paper);
            sunmiPrinterService.printText("    n", null);
            sunmiPrinterService.setPrinterStyle(WoyouConsts.ENABLE_BOLD, WoyouConsts.ENABLE);
            String[] txts = new String[]{"商品", "数量", "单价"};
            int[] width = new int[]{2, 2, 2};
            int[] align = new int[]{0, 1, 2};
            sunmiPrinterService.printColumnsString(txts, width, align, null);
            sunmiPrinterService.setPrinterStyle(WoyouConsts.ENABLE_BOLD, WoyouConsts.DISABLE);
            for (OrderPrintingDetail item : entity.getOrderDetailList()) {
                sunmiPrinterService.printText("    n", null);
                if (IntegerUtils.eq(item.getSpuAttrType(), 2)) {
                    txts[0] = isEmptyValue(item.getSpuTitle());
                    txts[1] = "";
                    txts[2] = "";
                    sunmiPrinterService.printColumnsString(txts, width, align, null);
                    txts[0] = isEmptyValue(item.getSpuDescription());
                } else {
                    txts[0] = isEmptyValue(item.getSpuTitle());
                }
                txts[1] = isEmptyValue(item.getNumber());
                txts[2] = isEmptyValue(item.getSpuSellPrice());
                sunmiPrinterService.printColumnsString(txts, width, align, null);
                if (item.getSpuRemark() != null) {
                    txts[0] = isEmptyValue(item.getSpuRemark());
                    txts[1] = "";
                    txts[2] = "";
                    sunmiPrinterService.printColumnsString(txts, width, align, null);
                }
            }
            sunmiPrinterService.printText("    n", null);
            setInterval(paper);
            if (entity.getOrderRemark() != null) {
                sunmiPrinterService.printText("    n", null);
                sunmiPrinterService.printTextWithFont("订单备注：" + entity.getOrderRemark() + "n", null, 28F, null);
            }
            sunmiPrinterService.printText("    n", null);
            sunmiPrinterService.printTextWithFont("预付金额：" + entity.getOriginPrice() + "n", null, 40F, null);
            setInterval(paper);
            sunmiPrinterService.printText("    n", null);
            sunmiPrinterService.printText("    n", null);
            sunmiPrinterService.printText("    n", null);
            sunmiPrinterService.printText("    n", null);
            sunmiPrinterService.cutPaper(null);
        } catch (RemoteException e) {
            Toast.makeText(MainActivity.CONTEXT, "打印异常：" + e.getMessage(), Toast.LENGTH_LONG).show();
            e.printStackTrace();
        }
    }
    
    
    public String isEmptyValue(Object value) {
        if (value == null) {
            return "";
        }
        return String.valueOf(value);
    }

    
    public void setInterval(int paper) throws RemoteException {
        if (paper == 1) {
            sunmiPrinterService.printText("--------------------------------n", null);
        } else {
            sunmiPrinterService.printText("------------------------------------------------n", null);
        }
    }
}

订单对象

@Data
@Accessors(chain = true)
public class OrderPrinting {

    private Long id;

    private String storeName;

    private String takeOrderNumber;

    private String deskName;

    private String deskType;

    private String orderNumber;

    private String serialNumber;

    private List orderDetailList;

    private BigDecimal originPrice;

    private BigDecimal reducePrice;

    private BigDecimal integerPrice;

    private String payWayName;

    private BigDecimal payMoney;

    private String placeOrderTime;

    private String payTime;

    private String orderRemark;
}

订单商品对象

@Data
@NoArgsConstructor
@AllArgsConstructor
@Accessors(chain = true)
public class OrderPrintingDetail {

    private Long spuAttrType;

    private String spuTitle;

    private String spuDescription;

    private BigDecimal number;

    private BigDecimal spuSellPrice;

    private String spuRemark;

}

使用到的比较工具类

public class IntegerUtils {

    
    public static boolean eq(Integer val1, Integer val2) {
        if (val1 != null && val2 != null) {
            return val1.intValue() == val2.intValue();
        }
        return false;
    }

    public static boolean eq(Long val1, Integer val2) {
        if (val1 != null && val2 != null) {
            return val1.intValue() == val2.intValue();
        }
        return false;
    }

    
    public static boolean gt(Integer val1, Integer val2) {
        if (val1 != null && val2 != null) {
            return val1.intValue() > val2.intValue();
        }
        return false;
    }

    public static boolean gt(Long val1, Integer val2) {
        if (val1 != null && val2 != null) {
            return val1.intValue() > val2.intValue();
        }
        return false;
    }

    
    public static boolean lt(Integer val1, Integer val2) {
        if (val1 != null && val2 != null) {
            return val1.intValue() < val2.intValue();
        }
        return false;
    }

    
    public static boolean ge(Integer val1, Integer val2) {
        if (val1 != null && val2 != null) {
            return (val1.intValue() > val2.intValue()) || (val1.intValue() == val2.intValue());
        }
        return false;
    }

    
    public static boolean le(Integer val1, Integer val2) {
        if (val1 != null && val2 != null) {
            return (val1.intValue() < val2.intValue()) || (val1.intValue() == val2.intValue());
        }
        return false;
    }

    
    public static boolean ne(Integer val1, Integer val2) {
        if (val1 != null && val2 != null) {
            return val1.intValue() != val2.intValue();
        }
        return false;
    }
}

// 商米打印机初始化
SunMiPrintingService sunmiPrintingService = new SunMiPrintingServiceImpl();
sunmiPrintingService.bindServicePrinting();

在接口方法已经使用了@JavascriptInterface注解，可以使用Javascript直接调用

function makeOrderPrinting(param) {
    window.sunMiPrinting.makeOrderPrinting(param);
}