wx.onBLECharacteristicValueChange(function (characteristic) { var creaddata = wx.arrayBufferToBase64(characteristic.value) var v = characteristic; console.log('creaddata:' + creaddata); console.log(`characteristic ${characteristic.characteristicId} has changed, now is ${characteristic.value}`) }) console.log(that.data.readServicweId); console.log(that.data.readCharacteristicsId); wx.readBLECharacteristicValue({ // 这里的 deviceId 需要在上面的 getBluetoothDevices 或 onBluetoothDeviceFound 接口中获取 deviceId: that.data.connectedDeviceId, // 这里的 serviceId 需要在上面的 getBLEDeviceServices 接口中获取 serviceId: that.data.readServicweId, // 这里的 characteristicId 需要在上面的 getBLEDeviceCharacteristics 接口中获取 characteristicId: that.data.readCharacteristicsId, success: function (res) { console.log('readBLECharacteristicValue:', res.errMsg); } }) characteristic.value 输出为000000000000000000，是什么情况，求解！！！ @官方