uniapp 小程序连接蓝牙打印机打印条码
搜索蓝牙 连接蓝牙 获取特征 存储特征import {mapState} from 'vuex';export default {data() {return {isSearching: false, //是否正在搜索中list: [],services: [],detail:"", // 货品详情serviceId: 0,writeCharacter: false,readCharacter:
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搜索蓝牙 连接蓝牙 获取特征 存储特征
import {
mapState
} from 'vuex';
export default {
data() {
return {
isSearching: false, //是否正在搜索中
list: [],
services: [],
detail:"", // 货品详情
serviceId: 0,
writeCharacter: false,
readCharacter: false,
notifyCharacter: false
};
},
computed: {...mapState(['sysinfo', 'Bluetooth'])},
onLoad(option) {
this.detail = option.data
},
onUnload() {
//停止搜索蓝牙设备
if (this.isSearching) {
uni.stopBluetoothDevicesDiscovery();
}
},
methods:{
//错误码提示
errorCodeTip(code) {
if (code == 0) {
//正常
} else if (code == 10000) {
uni.showToast({
title: '未初始化蓝牙适配器',
icon: 'none'
})
} else if (code == 10001) {
uni.showToast({
title: '当前蓝牙适配器不可用',
icon: 'none'
})
} else if (code == 10002) {
uni.showToast({
title: '没有找到指定设备',
icon: 'none'
})
} else if (code == 10003) {
uni.showToast({
title: '连接失败',
icon: 'none'
})
} else if (code == 10004) {
uni.showToast({
title: '没有找到指定服务',
icon: 'none'
})
} else if (code == 10005) {
uni.showToast({
title: '没有找到指定特征值',
icon: 'none'
})
} else if (code == 10006) {
uni.showToast({
title: '当前连接已断开',
icon: 'none'
})
} else if (code == 10007) {
uni.showToast({
title: '当前特征值不支持此操作',
icon: 'none'
})
} else if (code == 10008) {
uni.showToast({
title: '其余所有系统上报的异常',
icon: 'none'
})
} else if (code == 10009) {
uni.showToast({
title: 'Android 系统特有，系统版本低于 4.3 不支持 BLE',
icon: 'none'
})
}
},
//开始搜索蓝牙
handleStartSearch() {
let that = this
uni.openBluetoothAdapter({
success(res) {
uni.getBluetoothAdapterState({
success(res2) {
if (res2.available) {
that.isSearching = true;
if (res2.discovering) {
uni.showToast({
title: '正在搜索附近打印机设备',
icon: "none"
})
return;
}
//获取蓝牙设备信息
that.getBluetoothDevices()
// that.checkPemission()
} else {
uni.showModal({
title: '提示',
content: '本机蓝牙不可用',
})
}
}
});
},
fail() {
uni.showModal({
title: '提示',
content: '蓝牙初始化失败，请打开蓝牙',
})
}
})
},
// 停止搜索
handleStopSearch() {
uni.stopBluetoothDevicesDiscovery({
success: (res) => {
this.isSearching = false;
},
fail: (e) => {
this.errorCodeTip(e.errCode);
}
})
},
//获取蓝牙设备信息
getBluetoothDevices() {
let that = this
that.list = [];
uni.startBluetoothDevicesDiscovery({
success(res) {
//蓝牙设备监听 uni.onBluetoothDeviceFound
uni.onBluetoothDeviceFound((result) => {
let arr = that.list;
let devices = [];
let list = result.devices;
for (let i = 0; i < list.length; ++i) {
if (list[i].name && list[i].name != "未知设备") {
let arrNew = arr.filter((item) => {
return item.deviceId == list[i].deviceId;
});
if (arrNew.length == 0) {
devices.push(list[i]);
}
}
}
that.list = arr.concat(devices);
});
that.time = setTimeout(() => {
// uni.getBluetoothDevices
uni.getBluetoothDevices({
success(res2) {
let devices = [];
let list = res2.devices;
for (let i = 0; i < list.length; ++i) {
if (list[i].name && list[i].name != "未知设备") {
devices.push(list[i]);
}
}
that.list = devices;
},
})
clearTimeout(that.time);
}, 3000);
}
});
},
//绑定蓝牙
bindViewTap(e) {
let that = this;
let {
title
} = e.currentTarget.dataset;
let {
BLEInformation
} = that.Bluetooth;
this.handleStopSearch();
that.serviceId = 0;
that.writeCharacter = false;
that.readCharacter = false;
that.notifyCharacter = false;
uni.showLoading({
title: '正在连接',
})
uni.createBLEConnection({
deviceId: title,
success(res) {
BLEInformation.deviceId = title;
that.$store.commit('BLEInformationSet', BLEInformation);
uni.hideLoading()
that.getSeviceId()
},
fail(e) {
if (e.errCode === -1) {
BLEInformation.deviceId = title;
that.$store.commit('BLEInformationSet', BLEInformation);
that.getSeviceId()
}
that.errorCodeTip(e.errCode);
uni.hideLoading()
}
})
},
//获取蓝牙设备所有服务(service)。
getSeviceId() {
let that = this;
let {
BLEInformation
} = that.Bluetooth;
// uni.getBLEDeviceServices
let t=setTimeout(()=>{
uni.getBLEDeviceServices({
deviceId: BLEInformation.deviceId,
success(res) {
that.services = res.services;
that.getCharacteristics()
},
fail: function(e) {
that.errorCodeTip(e.code);
}
})
clearTimeout(t);
},1500)
},
getCharacteristics() {
var that = this
let {
services: list,
serviceId: num,
writeCharacter: write,
readCharacter: read,
notifyCharacter: notify
} = that;
let {
BLEInformation
} = that.Bluetooth;
// uni.getBLEDeviceCharacteristics
uni.getBLEDeviceCharacteristics({
deviceId: BLEInformation.deviceId,
serviceId: list[num].uuid,
success(res) {
for (var i = 0; i < res.characteristics.length; ++i) {
var properties = res.characteristics[i].properties
var item = res.characteristics[i].uuid
if (!notify) {
if (properties.notify) {
BLEInformation.notifyCharaterId = item;
BLEInformation.notifyServiceId = list[num].uuid;
that.$store.commit('BLEInformationSet', BLEInformation);
notify = true
}
}
if (!write) {
if (properties.write) {
BLEInformation.writeCharaterId = item;
BLEInformation.writeServiceId = list[num].uuid;
that.$store.commit('BLEInformationSet', BLEInformation);
write = true
}
}
if (!read) {
if (properties.read) {
BLEInformation.readCharaterId = item;
BLEInformation.readServiceId = list[num].uuid;
that.$store.commit('BLEInformationSet', BLEInformation);
read = true
}
}
}
if (!write || !notify || !read) {
num++
that.writeCharacter = write;
that.readCharacter = read;
that.notifyCharacter = notify;
that.serviceId = num;
if (num == list.length) {
uni.showModal({
title: '提示',
content: '找不到该读写的特征值',
})
} else {
that.getCharacteristics()
}
} else {
that.openControl()
}
},
fail: function(e) {
that.errorCodeTip(e.errCode);
}
})
},
openControl: function() {
uni.navigateTo({
url: '../code-print/code-print?data='+this.detail,
})
},
}
}
打印
var tsc = require("../../../utils/ble/tsc.js");
import {
mapState
} from 'vuex';
export default {
data() {
return {
canvasWidth: 400,
canvasHeight: 400,
looptime: 0,
currentTime: 1,
lastData: 0,
oneTimeData: 0,
printerNum: 1,
currentPrint: 1,
detail:"",// 货品详情
buffSize: [],
printNum: [],
isReceiptSend: false,
isLabelSend: false
};
},
onReady(){
let list = []
let numList = []
let j = 0
for (let i = 20; i < 200; i += 10) {
list[j] = i;
j++
}
for (let i = 1; i < 10; i++) {
numList[i - 1] = i
}
this.buffSize = list;
this.oneTimeData = list[0];
this.printNum = numList;
this.printerNum = numList[0];
},
onLoad(option) {
this.detail = JSON.parse(option.data)
},
computed: {...mapState(['sysinfo', 'Bluetooth'])},
onShow(){
let that = this;
const ctx = uni.createCanvasContext("edit_area_canvas", this);
ctx.font = 'normal bold 20px sans-serif';
ctx.setFillStyle('#171717'); // 文字颜色
ctx.translate(0,0)
ctx.rotate(90*Math.PI/180)
ctx.fillText(that.detail.name, 20,-15); // 绘制文字
ctx.draw();
},
methods:{
// 返回
handleBack(){
uni.navigateBack({
delta:3
})
},
//标签测试
labelTest(){
let that = this;
let canvasWidth = that.canvasWidth
let canvasHeight = that.canvasHeight
let command = tsc.jpPrinter.createNew()
command.setSize(14, 40)
command.setGap(0)
command.setCls()
command.setDensity(7)
// command.setText(80, 40, "TSS24.BF2", 1, 1, "名称：驰腾贴贴乐")
command.setBarCode(60, 20, "EAN128", 50, 0, 2, 2, that.detail.code)
uni.canvasGetImageData({
canvasId: 'edit_area_canvas',
x: 0,
y: 0,
width: canvasHeight,
height: canvasWidth,
success: function(res) {
command.setBitmap(60, 0, 1, res)
},
complete: function() {
command.setPagePrint()
that.isLabelSend = true;
that.prepareSend(command.getData())
}
})
},
//准备发送，根据每次发送字节数来处理分包数量
prepareSend(buff){
let that = this
let time = that.oneTimeData
let looptime = parseInt(buff.length / time);
let lastData = parseInt(buff.length % time);
this.looptime = looptime + 1;
this.lastData = lastData;
this.currentTime = 1;
that.Send(buff)
},
//分包发送
Send(buff){
let that = this
let {currentTime,looptime:loopTime,lastData,oneTimeData:onTimeData,printerNum:printerNum,currentPrint}=that;
let buf;
let dataView;
if (currentTime < loopTime) {
buf = new ArrayBuffer(onTimeData)
dataView = new DataView(buf)
for (var i = 0; i < onTimeData; ++i) {
dataView.setUint8(i, buff[(currentTime - 1) * onTimeData + i])
}
} else {
buf = new ArrayBuffer(lastData)
dataView = new DataView(buf)
for (var i = 0; i < lastData; ++i) {
dataView.setUint8(i, buff[(currentTime - 1) * onTimeData + i])
}
}
let {
BLEInformation
} = that.Bluetooth;
uni.writeBLECharacteristicValue({
deviceId: BLEInformation.deviceId,
serviceId: BLEInformation.writeServiceId,
characteristicId: BLEInformation.writeCharaterId,
value: buf,
complete: function() {
currentTime++
if (currentTime <= loopTime) {
that.currentTime = currentTime;
that.Send(buff)
} else {
if (currentPrint > printerNum) {
that.looptime = 0;
that.lastData = 0;
that.currentTime = 1;
that.isReceiptSend = false;
that.isLabelSend = false;
that.currentPrint = 1;
} else {
uni.showToast({
title: '已打印第' + currentPrint + '张',
})
currentPrint++;
that.currentPrint = currentPrint;
that.currentTime = 1;
that.Send(buff)
}
}
}
})
},
},
onUnload() {
let that = this;
let {
BLEInformation
} = that.Bluetooth;
},
}
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