weight 0.0.5 
weight: ^0.0.5 copied to clipboard
A new Flutter plugin for weight and print.
import 'dart:collection';
import 'package:flutter/material.dart';
import 'dart:async';
import 'package:flutter/services.dart';
import 'package:weight/weight.dart';
import 'package:weight/weight_constants.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
String weightNetWeight; //打印回调净重
String weightUnit;
bool isZero;
bool isStable;
bool isCurrentPrintSuccess = false;
@override
void initState() {
super.initState();
Weight.weightChannelOpen;
Weight.onWeightChange.listen((event) {
Map<String, dynamic> eventMap = new Map<String, dynamic>.from(event);
eventMap.containsKey(WeightConstants.WEIGHT_PARAM_MODEL);
String weightModel = eventMap[WeightConstants.WEIGHT_PARAM_MODEL];
String weightStatus = eventMap[WeightConstants.WEIGHT_PARAM_STATUS];
isZero = eventMap[WeightConstants.WEIGHT_PARAM_IS_ZERO];
weightUnit = eventMap[WeightConstants.WEIGHT_PARAM_UNIT];
weightNetWeight = eventMap[WeightConstants.WEIGHT_PARAM_NET_WEIGHT];
String weightTareWeight =
eventMap[WeightConstants.WEIGHT_PARAM_TARE_WEIGHT];
String weightGrossWeight =
eventMap[WeightConstants.WEIGHT_PARAM_GROSS_WEIGHT];
isStable = eventMap[WeightConstants.WEIGHT_PARAM_IS_STABLE];
printWhenStable();
if (isZero) {
isCurrentPrintSuccess = false;
}
if (mounted) {
setState(() {
weightNetWeight = eventMap[WeightConstants.WEIGHT_PARAM_NET_WEIGHT];
});
}
});
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Plugin example app'),
),
body: Center(
child: Column(
children: <Widget>[
Container(
height: 100,
width: 100,
color: Colors.red,
child: InkWell(
onTap: () async {
//拼接打印参数
HashMap hashMap = HashMap<String, String>();
//标题
hashMap.putIfAbsent(
WeightConstants.PRINT_PARAM_TITLE, () => "电饭锅梵蒂冈");
//规格
hashMap.putIfAbsent(
WeightConstants.PRINT_PARAM_SPEC, () => "100ml*100");
//净重
hashMap.putIfAbsent(WeightConstants.PRINT_PARAM_NET_WEIGHT,
() => weightNetWeight);
//打印时间(必须是YYYYMMDD)
hashMap.putIfAbsent(
WeightConstants.PRINT_PARAM_TIME, () => "20200101");
//存储条件
hashMap.putIfAbsent(
WeightConstants.PRINT_PARAM_STORE_CONDITION,
() => "常温");
//原料码
hashMap.putIfAbsent(
WeightConstants.PRINT_PARAM_MATERIAL_CODE,
() => "34234562");
//SKU码
hashMap.putIfAbsent(WeightConstants.PRINT_PARAM_SKU_CODE,
() => "dfgdfgdfgdfg-34435-2");
//唯一码
hashMap.putIfAbsent(WeightConstants.PRINT_PARAM_PACKAGE_NUM,
() => "WH00000000012345");
//打印前先判断打印机状态
int printStatusInt =
await Weight.weightChannelGetIntPrintStatus;
if (printStatusInt == 0) {
//打印机状态正常
bool printBool =
await Weight.weightChannelPrintBitmap(hashMap);
if (printBool) {
print("打印成功");
} else {
print("打印失败");
}
} else {
//打印机状态异常,查询具体异常信息
String printStatusString =
await Weight.weightChannelGetStringPrintStats;
print(printStatusString);
}
},
),
),
Container(
height: 100,
width: 100,
color: Colors.blue,
child: InkWell(
onTap: () async {
String zeroString = await Weight.weightChannelSetZero;
print(zeroString);
},
),
),
Container(
height: 100,
width: 100,
color: Colors.green,
child: InkWell(
onTap: () async {
// * 查询打印机状态,0是正常,不剥纸时可 返回2（未取纸）时也进行打印
// * @return
// * case 1:
// * showmsg("打印机缺纸");
// * break;
// * case 2:
// * showmsg("打印机未取纸");
// * break;
// * case 3:
// * showmsg("打印机开盖");
// * break;
// * case 4:
// * showmsg("打印机高温");
// * break;
// * case 5:
// * showmsg("打印机定位异常");
// * break;
// * case 6:
// * showmsg("打印机忙");
// * break;
// * case 7:
// * showmsg("打印机未知异常");
// * break;
String printStatusString =
await Weight.weightChannelGetStringPrintStats;
print(printStatusString);
},
),
),
Container(
height: 100,
width: 100,
color: Colors.yellow,
child: InkWell(
onTap: () async {
// * 查询打印机状态,0是正常,不剥纸时可 返回2（未取纸）时也进行打印
// * @return
// * case 1:
// * showmsg("打印机缺纸");
// * break;
// * case 2:
// * showmsg("打印机未取纸");
// * break;
// * case 3:
// * showmsg("打印机开盖");
// * break;
// * case 4:
// * showmsg("打印机高温");
// * break;
// * case 5:
// * showmsg("打印机定位异常");
// * break;
// * case 6:
// * showmsg("打印机忙");
// * break;
// * case 7:
// * showmsg("打印机未知异常");
// * break;
int printStatusInt =
await Weight.weightChannelGetIntPrintStatus;
print(printStatusInt);
},
),
),
Container(
height: 100,
width: 100,
color: Colors.lightBlueAccent,
child: Row(
children: <Widget>[
Text(weightNetWeight ?? '0'),
Text(weightUnit ?? '')
],
),
)
],
),
),
),
);
}
Future<bool> printWhenStable() async {
//不在0点并且稳定, 且当前物品没有打印成功 开始自动打印
if (!isZero && isStable && !isCurrentPrintSuccess) {
//判断打印机状态
int printStatusInt = await Weight.weightChannelGetIntPrintStatus;
if (printStatusInt == 0) {
//打印机状态正常
//拼接打印参数
HashMap hashMap = HashMap<String, String>();
//标题
hashMap.putIfAbsent(WeightConstants.PRINT_PARAM_TITLE, () => "电饭锅梵蒂冈");
//规格
hashMap.putIfAbsent(
WeightConstants.PRINT_PARAM_SPEC, () => "100ml*100");
//净重
hashMap.putIfAbsent(
WeightConstants.PRINT_PARAM_NET_WEIGHT, () => weightNetWeight);
//打印时间(必须是YYYYMMDD)
hashMap.putIfAbsent(WeightConstants.PRINT_PARAM_TIME, () => "20200101");
//存储条件
hashMap.putIfAbsent(
WeightConstants.PRINT_PARAM_STORE_CONDITION, () => "常温");
//原料码
hashMap.putIfAbsent(
WeightConstants.PRINT_PARAM_MATERIAL_CODE, () => "34234562");
//SKU码
hashMap.putIfAbsent(
WeightConstants.PRINT_PARAM_SKU_CODE, () => "dfgdfgdfgdfg-34435-2");
//唯一码
hashMap.putIfAbsent(
WeightConstants.PRINT_PARAM_PACKAGE_NUM, () => "WH00000000012345");
//开始打印
isCurrentPrintSuccess = await Weight.weightChannelPrintBitmap(hashMap);
if (isCurrentPrintSuccess) {
print("打印成功");
} else {
print("打印失败");
}
return isCurrentPrintSuccess;
} else {
//打印机状态不正常,查询具体异常信息
String printStatusString =
await Weight.weightChannelGetStringPrintStats; //具体异常信息
return false;
}
} else {
return false;
}
}
@override
void dispose() {
// TODO: implement dispose
super.dispose();
Weight.weightChannelClose;
}
}Metadata
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Metadata
A new Flutter plugin for weight and print.
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