|
|
<!-- 蓝牙和位置都需要打开-->
|
|
|
<template>
|
|
|
<view class="content">
|
|
|
<button type="primary" @tap="startBluetoothDeviceDiscovery">搜索蓝牙设备</button>
|
|
|
<button type="warn" @tap="stopBluetoothDevicesDiscovery">停止搜索</button>
|
|
|
|
|
|
<scroll-view class="device_list" scroll-y="true" show-scrollbar="true">
|
|
|
<radio-group>
|
|
|
<view v-for="(item,index) in devicesList" :key="index" class="device_item" v-if="item.name.length>0">
|
|
|
<view style="font-size: 32rpx; color: #333;">
|
|
|
<radio :value="item.deviceId" @tap="select_deviceId(item)" />{{item.name }}
|
|
|
</view>
|
|
|
<view style="font-size: 20rpx">信号强度: {{item.RSSI}}dBm ({{Math.max(100+item.RSSI,0)}}%)</view>
|
|
|
<view style="font-size: 20rpx">设备名称: {{item.deviceId}}</view>
|
|
|
<!-- <view style="font-size: 20rpx">可用服务数量: {{item.advertisServiceUUIDs.length || 0}}</view> -->
|
|
|
|
|
|
<radio-group v-if="deviceId===item.deviceId">
|
|
|
<view v-for="(service,service_index) in serviceList" :key="service_index" style="font-size: 20rpx">
|
|
|
<radio style="transform:scale(0.7)" :value="service.uuid" @tap="select_service(service)" />{{service.uuid }}
|
|
|
</view>
|
|
|
</radio-group>
|
|
|
</view>
|
|
|
</radio-group>
|
|
|
</scroll-view>
|
|
|
|
|
|
<view style="text-align: center;margin-top: 10px;">
|
|
|
<view>当前连接设备:{{deviceId}}</view>
|
|
|
<view>服务:{{serviceId}}</view>
|
|
|
<!-- <view>设备特征值notifyId:{{notifyId}}</view> -->
|
|
|
<view>writeId:{{writeId}}</view>
|
|
|
|
|
|
<button type="primary" @click="reconnect()">重新连接蓝牙</button>
|
|
|
|
|
|
</view>
|
|
|
|
|
|
<button type="primary" style="margin-top: 10px;" @tap="pickUpOnce">测试打印模板</button>
|
|
|
|
|
|
</view>
|
|
|
</template>
|
|
|
|
|
|
<script>
|
|
|
import PrinterJobs from './printerjobs.js'
|
|
|
import printerUtil from './printerutil.js'
|
|
|
import Bluetooth from './bluetooth.js'
|
|
|
|
|
|
let bluetooth = new Bluetooth();
|
|
|
|
|
|
export default {
|
|
|
components: {},
|
|
|
data() {
|
|
|
return {
|
|
|
isOpenBle: false, //是否已经打开蓝牙，默认为false
|
|
|
devicesList: [], //设备列表
|
|
|
serviceList: [], //服务列表
|
|
|
deviceId: "", //设备
|
|
|
serviceId:"",//设备服务
|
|
|
notifyId:"",//特征值
|
|
|
writeId:"",//传输数据特征值
|
|
|
}
|
|
|
},
|
|
|
//页面卸载是关闭蓝牙链接
|
|
|
onUnload() {
|
|
|
console.log('关闭蓝牙连接')
|
|
|
bluetooth.closeBLEConnection();
|
|
|
bluetooth.closeBluetoothAdapter();
|
|
|
},
|
|
|
onLoad() {
|
|
|
this.deviceId = uni.getStorageSync("deviceId") || "暂无信息";
|
|
|
this.serviceId = uni.getStorageSync("serviceId") || "暂无信息";
|
|
|
this.notifyId = uni.getStorageSync("notifyId") || "暂无信息";
|
|
|
this.writeId = uni.getStorageSync("writeId") || "暂无信息";
|
|
|
bluetooth.openBluetoothAdapter();
|
|
|
},
|
|
|
methods: {
|
|
|
reconnect(){
|
|
|
uni.showLoading({
|
|
|
mask: true,
|
|
|
title: '正在连接设备'+this.deviceId
|
|
|
})
|
|
|
bluetooth.reconnect();
|
|
|
},
|
|
|
//搜索周边设备
|
|
|
startBluetoothDeviceDiscovery() {
|
|
|
uni.showLoading({
|
|
|
title: '蓝牙搜索中'
|
|
|
})
|
|
|
|
|
|
let self = this;
|
|
|
self.devicesList = [];
|
|
|
|
|
|
setTimeout(() => {
|
|
|
uni.startBluetoothDevicesDiscovery({
|
|
|
success: res => {
|
|
|
uni.onBluetoothDeviceFound(devices => {
|
|
|
//console.log("发现设备: " + JSON.stringify(devices));
|
|
|
//不重复,就添加到devicesList中,
|
|
|
if (!self.devicesList.some(item => {
|
|
|
return item.deviceId === devices.devices[0].deviceId
|
|
|
})) {
|
|
|
self.devicesList.push(devices.devices[0])
|
|
|
}
|
|
|
});
|
|
|
},
|
|
|
fail: res => {
|
|
|
uni.hideLoading();
|
|
|
uni.showToast({
|
|
|
title:`搜索设备失败` + JSON.stringify(err),
|
|
|
icon:"none"
|
|
|
})
|
|
|
}
|
|
|
})
|
|
|
}, 200)
|
|
|
},
|
|
|
|
|
|
//停止搜索蓝牙设备
|
|
|
stopBluetoothDevicesDiscovery() {
|
|
|
uni.hideLoading();
|
|
|
bluetooth.stopBluetoothDevicesDiscovery();
|
|
|
},
|
|
|
|
|
|
|
|
|
//选中设备
|
|
|
async select_deviceId(item) {
|
|
|
this.deviceId = item.deviceId;
|
|
|
bluetooth.deviceId = item.deviceId;
|
|
|
uni.setStorageSync('deviceId', bluetooth.deviceId);
|
|
|
|
|
|
this.serviceList = [];
|
|
|
|
|
|
try {
|
|
|
//1.链接设备
|
|
|
await bluetooth.createBLEConnection();
|
|
|
|
|
|
uni.showLoading({
|
|
|
title: '正在获取蓝牙设备服务'
|
|
|
})
|
|
|
//2.寻找服务
|
|
|
await bluetooth.getBLEDeviceServices().then(res=>{
|
|
|
uni.hideLoading()
|
|
|
this.serviceList = res;
|
|
|
});
|
|
|
} catch (e) {
|
|
|
uni.hideLoading()
|
|
|
console.log("e: " + JSON.stringify(e));
|
|
|
}
|
|
|
},
|
|
|
|
|
|
//选中服务
|
|
|
async select_service(res) {
|
|
|
let self = this;
|
|
|
bluetooth.serviceId = res.uuid;
|
|
|
uni.setStorageSync('serviceId', res.uuid);
|
|
|
try {
|
|
|
let result = await bluetooth.getBLEDeviceCharacteristics();
|
|
|
setTimeout(function() {
|
|
|
uni.showToast({
|
|
|
title:"已连接打印机，请测试打印",
|
|
|
icon:"none"
|
|
|
})
|
|
|
}, 500);
|
|
|
|
|
|
} catch (e) {
|
|
|
console.log("e: " + JSON.stringify(e));
|
|
|
}
|
|
|
},
|
|
|
|
|
|
//打印一次
|
|
|
pickUpOnce() {
|
|
|
uni.showToast({
|
|
|
title:"正在为您打印...",
|
|
|
mask:true,
|
|
|
icon:"none",
|
|
|
duration:2000
|
|
|
})
|
|
|
bluetooth.notifyBLECharacteristicValue();
|
|
|
let self = this;
|
|
|
setTimeout(() => {
|
|
|
self.writeBLECharacteristicValue();
|
|
|
}, 500);
|
|
|
},
|
|
|
|
|
|
//写入控制命令
|
|
|
async writeBLECharacteristicValue() {
|
|
|
// 如果您遇到打印问题或者其他方面需求，可添加微信：chengjn1314(宁哥)咨询
|
|
|
// 如果您遇到打印问题或者其他方面需求，可添加微信：chengjn1314(宁哥)咨询
|
|
|
// 如果您遇到打印问题或者其他方面需求，可添加微信：chengjn1314(宁哥)咨询
|
|
|
|
|
|
//祝你测试打印一切顺利，现在开始打印模板（模板可定制调试）
|
|
|
let printerJobs = new PrinterJobs();
|
|
|
printerJobs
|
|
|
.setSize(1, 1)
|
|
|
.print(printerUtil.fillAround('加油小票'))
|
|
|
.print('')
|
|
|
.setAlign('lt')
|
|
|
.print('油品名称：92#汽油')
|
|
|
.print('用户卡号：00000259')
|
|
|
.print('加油数量：48.07升')
|
|
|
.print('油品价格：8.05元')
|
|
|
.print('加油金额：387元')
|
|
|
.print('结算方式：用户卡')
|
|
|
.print('卡余额：413.87元')
|
|
|
.print('单位名称：供电局')
|
|
|
.print('油站名称：桂通石油桥头加油站')
|
|
|
.print('加油时间：2022-10-13 11：34：59')
|
|
|
.print('')
|
|
|
.print(printerUtil.fillAround('谢谢惠顾'))
|
|
|
.println()
|
|
|
;
|
|
|
let buffer = printerJobs.buffer();
|
|
|
this.printbuffs(buffer);
|
|
|
},
|
|
|
|
|
|
printbuffs(buffer) {
|
|
|
// 1.并行调用多次会存在写失败的可能性
|
|
|
// 2.建议每次写入不超过20字节
|
|
|
// 分包处理，延时调用
|
|
|
const maxChunk = 20;
|
|
|
const delay = 20;
|
|
|
for (let i = 0, j = 0, length = buffer.byteLength; i < length; i += maxChunk, j++) {
|
|
|
let subPackage = buffer.slice(i, i + maxChunk <= length ? (i + maxChunk) : length);
|
|
|
setTimeout(this.printbuff, j * delay, subPackage);
|
|
|
}
|
|
|
},
|
|
|
|
|
|
printbuff(buffer) {
|
|
|
bluetooth.writeBLECharacteristicValue(buffer);
|
|
|
},
|
|
|
|
|
|
}
|
|
|
}
|
|
|
</script>
|
|
|
|
|
|
<style>
|
|
|
.content {}
|
|
|
|
|
|
page {
|
|
|
color: #333;
|
|
|
}
|
|
|
|
|
|
button {
|
|
|
margin: 10upx;
|
|
|
}
|
|
|
|
|
|
.devices_summary {
|
|
|
margin-top: 5rpx;
|
|
|
padding: 20rpx;
|
|
|
font-size: 30rpx;
|
|
|
}
|
|
|
|
|
|
.device_list {
|
|
|
margin: 5rpx 20rpx 5rpx 20rpx;
|
|
|
border: 1rpx solid #ddd;
|
|
|
border-radius: 10rpx;
|
|
|
background-color: #FdFdFd;
|
|
|
min-height: 0rpx;
|
|
|
max-height: 400rpx;
|
|
|
width: 700rpx;
|
|
|
|
|
|
}
|
|
|
|
|
|
.device_item {
|
|
|
border-bottom: 1rpx solid #ddd;
|
|
|
padding: 20rpx;
|
|
|
color: #666;
|
|
|
|
|
|
}
|
|
|
|
|
|
.device_item_hover {
|
|
|
background-color: rgba(0, 0, 0, .1);
|
|
|
}
|
|
|
|
|
|
.connected_info {
|
|
|
position: fixed;
|
|
|
bottom: 0;
|
|
|
width: 100%;
|
|
|
background-color: #F0F0F0;
|
|
|
padding: 10px;
|
|
|
padding-bottom: 20px;
|
|
|
margin-bottom: env(safe-area-inset-bottom);
|
|
|
font-size: 14px;
|
|
|
min-height: 100px;
|
|
|
box-shadow: 0px 0px 3px 0px;
|
|
|
}
|
|
|
|
|
|
.connected_info .operation {
|
|
|
position: absolute;
|
|
|
display: inline-block;
|
|
|
right: 30px;
|
|
|
}
|
|
|
</style>
|