uu

components/tpx-bluetooth-print/render-template.vue

@@ -1,7 +1,7 @@
 <template>
-	<tpx-bluetooth v-model:value="blueToothData">
+	<tpx-bluetooth ref="curBlueTooth">
 		<template v-slot:button>
-			<u-button @click="handlePrint" type="primary" :disabled="!(blueToothData.deviceId && blueToothData.serviceId && blueToothData.characteristicId)">打印</u-button>
+			<u-button @click="handlePrint" type="primary">确认打印</u-button>
 		</template>
 		<template v-slot:content>
 			<view class="pt-20 pb-10">打印内容</view>
@@ -52,11 +52,6 @@ export default {
 			imgData: '',
 			percentage: 0, // 打印进度 
 			threshold: 200, // 阈值(值越大,图片打印越深)
-			blueToothData: {
-				deviceId: '',
-				serviceId: '',
-				characteristicId: ''
-			}
 		}
 	},
 	mounted () {
@@ -71,8 +66,10 @@ export default {
 		// 打印
 		async handlePrint(){
 			const that = this
+			let { deviceId, serviceId, characteristicId } = this.$refs.curBlueTooth.getInstance()
+			
 			const opt = {
-			    ...this.blueToothData,
+			    ...{ deviceId, serviceId, characteristicId },
 			    onProgress: (percentage) => {
 					console.log("打印进度====", percentage)
 			        that.percentage = percentage

components/tpx-bluetooth/tpx-bluetooth.vue

@@ -1,5 +1,5 @@
 <template>
-	<tpx-layout>
+	<tpx-layout v-if="showConnectPage">
 		<template v-slot:header>
 			<view class="blcok-white" style="margin-top: 0;">
 				<view >
@@ -27,8 +27,8 @@
 					</u-steps>
 				</view>
 			</view>
-			
 		</template>
+		
 		<template v-slot:body>
 			<view class="blcok-white">
 				<view v-if="curTab == 0">
@@ -90,15 +90,16 @@
 						</view>
 					</template>	
 				</view>
-				
 				<slot name="content"></slot>
 			</view>
 		</template>
 	</tpx-layout>
+	
 </template> 
 
 <script>
 import { showLoading, showToast, hideLoading }	from "@/common/untool"
+import { getSessionBluetoothInfo, setSessionBluetoothInfo } from "@/session"
 
 export default {
 	computed: {
@@ -113,69 +114,92 @@ export default {
 	},
 	watch: {
 		deviceId(val){
-			this.value.deviceId = val
-			this.$emit('update:value', this.value)
+			updateBlueSessionInfo()
 		},
 		serviceId(val){
-			this.value.serviceId = val
-			this.$emit('update:value', this.value)
+			updateBlueSessionInfo()
 		},
 		characteristicId(val){
-			this.value.characteristicId = val
-			this.$emit('update:value', this.value)
+			updateBlueSessionInfo()
 		}
 	},
 	props:{
-		value: {
-			default () {
-				return {}
-			}
-		},
+		
 	},
 	data () {
+		let { deviceId, serviceId, characteristicId } = getSessionBluetoothInfo()
 		return {
+			showConnectPage: true,
 			canvasId: 'shareCanvas',
 			canvas_width: 240,
 			canvas_height: 240,
 			curTab: 0,
 			searchLoading: false,
 			devices: [],
-			deviceId: this.value?.deviceId,
+			deviceId,
 			serverList: [],
-			serviceId: this.value?.deviceId,
+			serviceId,
 			characteristics: [],
-			characteristicId: this.value?.deviceId,
+			characteristicId,
 		}
 	},
-	mounted () {
+	async mounted () {
 		// 初始化蓝牙模块
-		this.openBluetoothAdapter()
-		// 自动搜索设备
-		this.discoveryPrinter()
+		await this.openBluetoothAdapter()
+		this.autoConnect()
 	},
 	unmounted() {
 		this.stopDiscoveryPrinter()
-		this.closeBluetoothAdapter()
+		// this.closeBluetoothAdapter()
 	},
 	methods: {
+		updateBlueSessionInfo() {
+			let { deviceId, serviceId, characteristicId } = this
+			setSessionBluetoothInfo({ deviceId, serviceId, characteristicId })
+		},
+		// 自动连接历史蓝牙配置
+		async autoConnect() {
+			let conSta = await this.checkConnectStat()
+			// 自动连接
+			if(!conSta) {
+				this.discoveryPrinter()
+			}
+			return true
+		},
+		
+		// 检查蓝牙 缓存连接状态 【获取不到characteristics说明连接已经过期】
+		async checkConnectStat(){
+			let bl = false
+			try{
+				await this.getBLEDeviceCharacteristics()
+				bl = true
+			}catch(e){
+			}
+			return bl
+		},
 		changeTab(type) {
 			this.curTab = type
 		},
 		openBluetoothAdapter () {
 			var _this = this
+			return new Promise((resolve, reject)=> {
 				uni?.openBluetoothAdapter?.({
 					complete (e) {
 						console.log(e);
 						if (!e.errCode) {
+							resolve()
 							console.log('初始化完成')
 						} else if (e.errCode == 10001) {
+							reject(e)
 							showToast('请打开手机蓝牙')
 						} else {
+							reject(e)
 							console.log('openBluetoothAdapter：error=========', e.errMsg)
 							showToast(e.errMsg)
 						}
 					}
 				})
+			})
 		},
 		// 开始搜寻附近的蓝牙外围设备
 		discoveryPrinter () {
@@ -183,10 +207,12 @@ export default {
 			_this.devices = []
 			_this.searchLoading = true
 			_this.curTab = 0
+			return new Promise((resolve, reject)=> {
 				uni?.startBluetoothDevicesDiscovery?.({
 					complete (e) {
 						console.log(e)
 						if (e.errMsg == "startBluetoothDevicesDiscovery:ok") {
+							resolve()
 							// ArrayBuffer转16进度字符串示例
 							uni.onBluetoothDeviceFound(devices => {
 								console.log("========devices=====", devices)
@@ -196,9 +222,12 @@ export default {
 									_this.devices.push(curDvs)
 								}
 							})
+						} else {
+							reject()
 						}
 					}
 				})
+			})
 		},
 		// 停止搜寻附近的蓝牙外围设备
 		async stopDiscoveryPrinter () {
@@ -294,7 +323,7 @@ export default {
 		},
 		getBLEDeviceCharacteristics () {
 			var _this = this
-			return new Promise((resolve)=> {
+			return new Promise((resolve, reject)=> {
 				showLoading('正在搜索特征值')
 				uni.getBLEDeviceCharacteristics({
 					// 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接
@@ -310,12 +339,15 @@ export default {
 					},
 					fail:(res)=>{
 						hideLoading()
-						resolve()
+						reject()
 						console.log(res)
 					}
 				})
 			})
 		},
+		getInstance() {
+			return this
+		}
 	}
 }
 </script>

pages/print/courierNote.vue

@@ -96,7 +96,7 @@
 							
 							<tpx-checkitems :list="resData.list" v-model:value="submitParam.billCode" v-slot="dlCurrent" type="multiple" 
 							>
-								<view slot class="yditem mt-20">
+								<view slot class="yditem">
 									<u-row>
 										<u-col span="8">
 											<u-row>

session/index.js

@@ -1,4 +1,4 @@
-import { XTOKEN_KEY, USERINFO_KEY } from "./key"
+import { XTOKEN_KEY, USERINFO_KEY, BLUETOOTH_KEY } from "./key"
 
 export const setSessionXToken = (val = '')=> {
 	uni.setStorageSync(XTOKEN_KEY, val)
@@ -15,3 +15,12 @@ export const setSessionUserInfo = (val = {})=> {
 export const getSessionUserInfo = ()=> {
 	return uni.getStorageSync(USERINFO_KEY) || {}
 }
+
+
+export const setSessionBluetoothInfo = (val = {})=> {
+	uni.setStorageSync(BLUETOOTH_KEY, val)
+}
+
+export const getSessionBluetoothInfo = ()=> {
+	return uni.getStorageSync(BLUETOOTH_KEY) || {}
+}

session/key.js

@@ -1,2 +1,3 @@
 export const XTOKEN_KEY = 'XTOKEN_KEY'
 export const USERINFO_KEY = 'USERINFO_KEY'
+export const BLUETOOTH_KEY = 'BLUETOOTH_KEY'