uniapp实现蓝牙连接的标准流程与代码示例

// 创建Vue对象
const app = new Vue({
  el: '#app',
  data() {
    return {
      devices: [],
      connectedDevice: null,
      serviceId: "0000ffe0-0000-1000-8000-00805f9b34fb",
      writeCharacteristicId: "0000ffe1-0000-1000-8000-00805f9b34fb",
    }
  },
  methods: {
    // 打开蓝牙
    openBluetooth(){
      uni.openBluetoothAdapter({
        success: () => {
          this.logs.push('开启蓝牙成功')
          // 立即开始扫描设备
          this.startScanDevices()
        },
        fail: (res) => {
          this.logs.push(`开启蓝牙失败[${res.errCode}]: ${res.errMsg}`)
        }
      })
    }
  }
})

// 设备发现更新
  onDeviceFound(e) {
    // 扫描到的设备
    const device = e.devices[0]
    // 判断是否已存在列表中
    if(!this.deviceIsExist(device.deviceId)) {
      this.devices.push(device)
    }
  },
  // 连接设备
  connect(deviceId) {
    uni.createBLEConnection({
      deviceId: deviceId,
      success: (res) => {
        this.connectedDevice = res
        // 获取设备的服务列表
        this.getBLEDeviceServices(deviceId)
      },
      fail: (res) => {
        console.log('连接设备失败', res)
      }
    })
  },
  // 获取设备的服务列表
  getBLEDeviceServices(deviceId) {
    uni.getBLEDeviceServices({
      deviceId,
      success: (res) => {
        // 打印日志
        this.logs.push('获取服务列表成功')
        console.log('设备服务列表', res.services)
        // 获取设备的特征值
        res.services.forEach(service => {
          if (service.uuid.toUpperCase() == "FFF0") {
            this.getBLEDeviceCharacteristics(deviceId, service.uuid)
          }
        })
      },
      fail: (res) => {
        console.log('获取服务列表失败', res)
      }
    })
  },
  // 获取设备的特征值
  getBLEDeviceCharacteristics(deviceId, serviceId) {
    uni.getBLEDeviceCharacteristics({
      deviceId,
      serviceId,
      success: (res) => {
        console.log('设备特征值列表', res.characteristics)
        // 遍历特征值，找到所需特征
        res.characteristics.forEach(characteristic => {
          // 打印日志
          console.log('设备特征值', characteristic)
          if