微信小程序 监听特征值返回成功但是没有真正的监听成功

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微信小程序 监听特征值返回成功但是没有真正的监听成功Wechat Mini Program The monitoring feature value returns successfully but there is no real monitoring success

wx.notifyBLECharacteristicValueChange({              deviceId:deviceId,              serviceId:serviceId,              characteristicId: NotifyCharactersticUUID,              state: true,              success:(res2) =>{                   console.log('监听特征值成功',res2)                },              fail:(res2) => {                console.log("notify fail", res2)              },              complete:(res2) =>{                                      wx.onBLECharacteristicValueChange((characteristic) => {                  const data = Array.prototype.slice.call(new Uint8Array(characteristic.value ))                  console.log('设备返回的特征值',data)                  father.onCharacteristicsHandler(data)                })              }            })

Framework type problem type API / component name terminal type wechat version basic library version applet bug wx.notifyBLECharacteristicValueChange Wechat Android client 8.0.0 2.14.0 this problem only appears on Android phones, and only in specific chips. 1. After the Bluetooth connection is successful, the device service is obtained successfully, and the device characteristic value is obtained successfully, then the Bluetooth characteristic value change is monitored. wx.notifyBLECharacteristicValueChange ({               deviceId:deviceId ,               serviceId:serviceId ,              characteristicId: NotifyCharactersticUUID,              state: true,               success:(res2) =>{                    console.log ('monitoring eigenvalue succeeded ', res2)}, fail: (res2) = > { console.log ("notify fail", res2)              },               complete:(res2) =>{                                       wx.onBLECharacteristicValueChange ((characteristic) => {                  const data =  Array.prototype.slice .call(new Uint8Array( characteristic.value  ))                   console.log (' Characteristic value 'returned by the device, data) father.onCharacteristicsHandler (data)})} (2. At this time, we can see that the interface returns the listening eigenvalue successfully, but no eigenvalue has been returned at this time. 3. So open another software NRF connect to connect to this device, and monitor the change of characteristic value here. 4. After the monitoring is successful, I return to the small program, and you can see that the characteristic value is returned immediately. 5. It can be judged that the interface is not monitoring the characteristic value successfully.

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