解决 iOS 获取蓝牙特征信息失败问题

src/common/bluetooth.ts

@@ -63,11 +63,36 @@ class Bluetooth {
 
   /** 连接蓝牙 */
   async createBLEConnection(deviceId: string) {
-    await bluetooth.createBLEConnection({ deviceId })
-    bluetooth.stopBluetoothDevicesDiscovery()
     bluetooth.onBLEConnectionStateChange(({ connected }) => {
       showMyToast({ title: connected ? '蓝牙已连接' : '蓝牙已断开' })
     })
+    try {
+      await bluetooth.createBLEConnection({ deviceId })
+      bluetooth.stopBluetoothDevicesDiscovery()
+      await this.getBLEDeviceServices(deviceId)
+    } catch (error) {
+      console.error(error)
+    }
+  }
+
+  /** 获取蓝牙服务列表, 初始化蓝牙服务列表 */
+  async getBLEDeviceServices(deviceId: string) {
+    Taro.showLoading({ title: '获取蓝牙参数...' })
+    const { services } = await bluetooth.getBLEDeviceServices({ deviceId }) // 获取服务列表
+    Taro.showLoading({ title: '获取特征值...' })
+    const serveList: Array<Promise<Taro.getBLEDeviceCharacteristics.Promised>> = []
+    for (const iterator of services) {
+      const serve = bluetooth.getBLEDeviceCharacteristics({
+        deviceId,
+        serviceId: iterator.uuid
+      }) // 获取特征服务
+      serveList.push(serve)
+    }
+
+    const serveListRes = await Promise.all(serveList)
+    serveListRes.forEach(({ characteristics }) => {
+      console.log({ characteristics })
+    })
   }
 
   /** 打开蓝牙的监听功能 */
@@ -111,17 +136,21 @@ class Bluetooth {
 
   /** 整理WiFi列表的信息包 */
   async formatWifiList(deviceId: string, value: ArrayBuffer) {
-    const { page, advertisData } = await analysisPage(value)
-    if (page === 0) {
-      // 数据传输完毕
-      this.getWifiListCallBack && this.getWifiListCallBack(JSON.parse(advertisData))
+    try {
+      const { page, advertisData } = await analysisPage(value)
+      if (page === 0) {
+        // 数据传输完毕
+        this.getWifiListCallBack && this.getWifiListCallBack(JSON.parse(advertisData))
+      }
+      bluetooth.writeBLECharacteristicValue({
+        deviceId,
+        serviceId: BLE_SERVICE_ID,
+        value: new Uint8Array([page]).buffer,
+        characteristicId: WIFI_CHARACTERISTIC_ID
+      })
+    } catch (error) {
+      console.error('获取WiFi列表', error)
     }
-    bluetooth.writeBLECharacteristicValue({
-      deviceId,
-      serviceId: BLE_SERVICE_ID,
-      value: new Uint8Array([page]).buffer,
-      characteristicId: WIFI_CHARACTERISTIC_ID
-    })
   }
 
   /** 整理WiFi连接状态信息 */

src/common/token.ts

@@ -11,7 +11,11 @@ class Token {
   init() {
     if (!this.initDone) {
       this.initDone = true
-      return this.getStorageToken()
+      const token = this.getStorageToken()
+      if (!token) {
+        Taro.navigateTo({ url: '/pages/login/index' })
+      }
+      return token
     }
   }
 

src/pages/home/user/index.tsx

@@ -58,7 +58,7 @@ class User extends Component {
 
   logOut() {
     token.reset()
-    Taro.navigateTo({ url: '/pages/login/index.tsx' })
+    Taro.navigateTo({ url: '/pages/login/index' })
   }
 
   shouldComponentUpdate(_nextPorps, _nextState) {

src/pages/index.tsx

@@ -21,12 +21,13 @@ interface Index {
 }
 
 class Index extends Component {
+  init = false
   config: Config = {
     navigationBarTitleText: '',
     navigationStyle: 'custom'
   }
-  constructor(props) {
-    super(props)
+
+  componentWillMount() {
     this.initToekn()
   }