同问题，onBluetoothDeviceFound第一次使用onBluetoothDeviceFound有数据， 第二次启动onBluetoothDeviceFound后onBluetoothDeviceFound无数据，扫描的设备是同一台 getBleList() {     wx.offBluetoothDeviceFound()     wx.onBluetoothDeviceFound((res) => {       res.devices.forEach(item => {         this.data.deives.push({           name: item.name,           device: item         })       })       this.setData({         deives: this.data.deives,         showAll: true,         isLoad: false       })       wx.hideLoading();     })     wx.startBluetoothDevicesDiscovery({       app: this,       services: [id],       success(res) {         console.log(res.errMsg)         wx.showLoading({            title: "正在扫描设备",           mask: true         });       },       fail(res) {         console.log(res.errMsg)         this.app.setData({           isLoad: false         })         this.app.showFail()       }     })   },