<template><view><button type="primary" @click="startBluetoothDeviceDiscovery">搜索藍(lán)牙</button><button type="primary" @click="onBluetoothDeviceFound">發(fā)現(xiàn)外圍設(shè)備</button><button type="primary" @click="getBluetoothDevices">獲取藍(lán)牙設(shè)備信息</button><button type="primary" @click="getBLEDeviceServices">獲取藍(lán)牙所有服務(wù)</button><button type="primary" @click="getBLEDeviceCharacteristics">進(jìn)入特征</button><view v-for="(item, index) in list" :key="index">{{ item.name }}:{{ item.deviceId }}<button type="primary" @click="createBLEConnection(item.deviceId)">連接</button></view><button type="primary" @click="writeBLECharacteristicValue">寫入藍(lán)牙</button><button type="primary" @click="stopBluetoothDevicesDiscovery">停止搜索藍(lán)牙</button></view> </template><script>export default {data() {return {list:[],deviceId:'',serviceId:'',characteristics:[],characteristicId:'',}},onShow(){uni.openBluetoothAdapter({success:(res)=> { //已打開uni.getBluetoothAdapterState({//藍(lán)牙的匹配狀態(tài)success:(res1)=>{console.log(res1,'本機(jī)設(shè)備的藍(lán)牙已打開')// 開始搜索藍(lán)牙設(shè)備this.startBluetoothDeviceDiscovery()},fail(error) {uni.showToast({icon:'none',title: '查看手機(jī)藍(lán)牙是否打開'});}});},fail:err=>{ //未打開 uni.showToast({icon:'none',title: '查看手機(jī)藍(lán)牙是否打開'});}})},methods: {// 開始搜索藍(lán)牙設(shè)備startBluetoothDeviceDiscovery(){uni.startBluetoothDevicesDiscovery({success: (res) => {console.log('startBluetoothDevicesDiscovery success', res)// 發(fā)現(xiàn)外圍設(shè)備this.onBluetoothDeviceFound()},fail:err=>{console.log(err,'錯(cuò)誤信息')}})},// 發(fā)現(xiàn)外圍設(shè)備onBluetoothDeviceFound() {uni.onBluetoothDeviceFound((res) => {console.log(JSON.stringify(res.devices))if(this.list.indexOf(res.devices[0].deviceId)==-1){this.list.push({name:res.devices[0].name,deviceId:res.devices[0].deviceId})}})},//獲取在藍(lán)牙模塊生效期間所有已發(fā)現(xiàn)的藍(lán)牙設(shè)備。包括已經(jīng)和本機(jī)處于連接狀態(tài)的設(shè)備。getBluetoothDevices() {console.log("獲取藍(lán)牙設(shè)備");uni.getBluetoothDevices({success: res => {console.log('獲取藍(lán)牙設(shè)備成功:');console.log(res.devices);}});},//選擇設(shè)備連接吧deviceId傳進(jìn)來createBLEConnection(deviceId){//data里面建立一個(gè)deviceId，存儲起來this.deviceId = deviceId,//連接藍(lán)牙uni.createBLEConnection({// 這里的 deviceId 需要已經(jīng)通過 createBLEConnection 與對應(yīng)設(shè)備建立鏈接deviceId:this.deviceId,success(res) {console.log(res)console.log("藍(lán)牙連接成功")},fail(res) {console.log("藍(lán)牙連接失敗",res)}})},// 停止搜尋藍(lán)牙設(shè)備stopBluetoothDevicesDiscovery(){uni.stopBluetoothDevicesDiscovery({success: e => {this.loading = falseconsole.log('停止搜索藍(lán)牙設(shè)備:' + e.errMsg);},fail: e => {console.log('停止搜索藍(lán)牙設(shè)備失敗，錯(cuò)誤碼：' + e.errCode);}});},//獲取藍(lán)牙特征getBLEDeviceCharacteristics(){console.log("進(jìn)入特征");setTimeout(()=>{uni.getBLEDeviceCharacteristics({// 這里的 deviceId 需要已經(jīng)通過 createBLEConnection 與對應(yīng)設(shè)備建立鏈接deviceId:this.deviceId,// 這里的 serviceId 需要在 getBLEDeviceServices 接口中獲取serviceId:this.serviceId,success:(res)=>{console.log(res,'特征getBLEDeviceCharacteristics')this.characteristics = res.characteristicsconsole.log(this.characteristics)res.characteristics.forEach((item)=>{if(item.uuid.indexOf("470A") != -1){this.characteristicId = item.uuid//console.log('characteristicId:', item.uuid)//利用傳參的形勢傳給下面的notify，這里的uuid如果都需要用到，就不用做判斷了，建議使用setTimeout進(jìn)行間隔性的調(diào)用此方法this.notifyBLECharacteristicValueChange(item.uuid)}})},fail:(res)=>{console.log(res)}})},1000)},// 啟用 notify 功能notifyBLECharacteristicValueChange(characteristicId){console.log(characteristicId,'characteristicId')uni.notifyBLECharacteristicValueChange({state: true, // 啟用 notify 功能// 這里的 deviceId 需要已經(jīng)通過 createBLEConnection 與對應(yīng)設(shè)備建立鏈接deviceId:this.deviceId,// 這里的 serviceId 需要在 getBLEDeviceServices 接口中獲取serviceId:this.serviceId,// 這里的 characteristicId 需要在 getBLEDeviceCharacteristics 接口中獲取characteristicId:characteristicId,success:(res)=> {console.log(res)// console.log(this.characteristicId)console.log('notifyBLECharacteristicValueChange success', res.errMsg)},fail:(res)=> {console.log('notifyBLECharacteristicValueChange fail', res.errMsg)}})},//獲取藍(lán)牙的所有服務(wù)getBLEDeviceServices(){setTimeout(()=>{uni.getBLEDeviceServices({// 這里的 deviceId 需要已經(jīng)通過 createBLEConnection 與對應(yīng)設(shè)備建立鏈接deviceId:this.deviceId,success:(res)=>{console.log('device services:', res)//E95D93AF-251D-470A-A062-FA1922DFA9A8//6E400001-B5A3-F393-E0A9-E50E24DCCA9Eres.services.forEach((item)=>{if(item.uuid.indexOf("470A")!=-1){this.serviceId = item.uuid;console.log(this.serviceId)//獲取特征this.getBLEDeviceCharacteristics()}})}})},1000)},//寫入藍(lán)牙writeBLECharacteristicValue() {let buffer = new ArrayBuffer(1) let dataView = new DataView(buffer)dataView.setUint8(0, 0x20)uni.writeBLECharacteristicValue({deviceId: this.deviceId,serviceId: this.serviceId,characteristicId: this.characteristicId,value:buffer,success(res) {console.log('writeBLECharacteristicValue success', res.errMsg)},fail(res) { console.log(JSON.stringify(res))console.log(JSON.stringify(buffer))}})},}} </script><style> </style>

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