wx.getBLEDeviceCharacteristics安卓手机一切正常， IOS write为false ，而且每次监听到的uuid都是一样的.   wx.notifyBLECharacteristicValueChange监听不到特征值，直接返回到fail方法里面 IOS手机：：：：：：：：：：：：：：：：：：：：（有问题） [图片] 安卓手机：：：：：：：：：：：：：（正常 每次的uuid监听到的都不一样） [图片] */   findBlue() {     var that = this     wx.startBluetoothDevicesDiscovery({       allowDuplicatesKey: false,       interval: 0,       success: function (res) {         // wx.showLoading({         //   title: '正在搜索设备',         // })         that.getBlue()       }     })   },   // /**   //  * 获取搜索到的设备信息   //  */   getBlue() {     var that = this     wx.getBluetoothDevices({       success: function (res) {         for (var i = 0; i < res.devices.length; i++) {           //that.data.inputValue：表示的是需要连接的蓝牙设备ID，简单点来说就是我想要连接这个蓝牙设备，所以我去遍历我搜索到的蓝牙设备中是否有这个ID           if (res.devices[i].name == that.data.name || res.devices[i].localName == that.data.inputValue) {           // if (res.devices[i].name == that.data.name) {             that.setData({               deviceId: res.devices[i].deviceId,               consoleLog: "设备：" + res.devices[i].deviceId,             })             let deviceId = res.devices[i].deviceId             that.connetBlue(deviceId); //4.0             console.log("搜索周围设备")             return;           }         }       },     })   },   // /**   //  * 获取到设备之后连接蓝牙设备   //  */   connetBlue(deviceId) {     console.log("进入连接方法deviceId" + deviceId)     var that = this;     // wx.closeBLEConnection({     //   deviceId: deviceId     // })     // wx.stopBluetoothDevicesDiscovery();     wx.startBluetoothDevicesDiscovery({       allowDuplicatesKey: true,       success: (res) => {         // console.log('startBluetoothDevicesDiscovery success', res)         // wx.onBluetoothDeviceFound((res) => {         //   // console.log(res)         //   // console.log("扫描蓝牙1")         // })         wx.createBLEConnection({           deviceId,           success: (res) => {             wx.hideLoading()             console.log("连接蓝牙成功1!")             that.setData({               deviceId,             })           },           fail: (res) => {             wx.hideLoading()             console.log('连接蓝牙失败第一次');             console.log(res)             wx.startBluetoothDevicesDiscovery({               allowDuplicatesKey: true,               success: (res) => {                 console.log('startBluetoothDevicesDiscovery success', res)                 // wx.onBluetoothDeviceFound((res) => {                 //   console.log(res)                 //   console.log("扫描蓝牙2")                 // })                 wx.createBLEConnection({                   deviceId,                   success: (res) => {                     console.log("连接蓝牙成功2!")                     that.setData({                       deviceId,                     })                   },                   fail: (res) => {                     console.log('连接蓝牙失败第二次');                     console.log(res)                   }                 })               },             })           }         })       },     })   },   getBLEDeviceServices(deviceId) {     console.log(1)     wx.getBLEDeviceServices({       deviceId,       success: (res) => {     console.log(2)     console.log(res)     console.log(3)         for (let i = 0; i < res.services.length; i++) {           if (res.services[i].isPrimary) {           console.log(4)              console.log(deviceId)             console.log(res.services[i].uuid)             this.getBLEDeviceCharacteristics(deviceId, res.services[i].uuid)             return           }         }       },       fail:function(res){         console.log("失败咯")         console.log(res)       }     })   },   getBLEDeviceCharacteristics(deviceId, serviceId) {     var that = this;     console.log(5)     wx.getBLEDeviceCharacteristics({       deviceId,       serviceId,       success: (res) => {         console.log(6)         console.log('getBLEDeviceCharacteristics success', res.characteristics)         for (let i = 0; i < res.characteristics.length; i++) {         console.log(7)           let item = res.characteristics[i]           console.log(item)           if (item.properties.read) {             wx.readBLECharacteristicValue({               deviceId,               serviceId,               characteristicId: item.uuid,             })                     if (item.properties.write) {             that.setData({               canWrite: true             })                         }           }                if (that.data.state == false) {             //关             that.writeBLECharacteristicValue22()           } else {             // //开             // if (that.data.isShow1 == true || that.data.isShow2 == true) {             //   that.writeBLECharacteristicValue11()             // } else if(that.data.isShow1 == false && that.data.isShow2 == false){             //   that.writeBLECharacteristicValue00()             // }             that.writeBLECharacteristicValue11()         }           // 操作之前先监听，保证第一时间获取数据           if (item.properties.notify || item.properties.indicate) {             wx.notifyBLECharacteristicValueChange({               deviceId,               serviceId,               characteristicId: item.uuid,               state: true,               success(res) {                 wx.onBLECharacteristicValueChange(function (resb) {                   console.log('监听到特征值更新', resb.characteristicId);                   console.log('监听到特征值更新1', resb.value);                   let characteristicValue = ab2hex(resb.value);                   console.log('转换16进制后：', characteristicValue);                   //this._characteristicId = resb.characteristicId                   that.setData({                     deviceId: deviceId,                     serviceId: serviceId,                     characteristicId: resb.characteristicId                   });                   // wx.showModal({                   //   title: '监听到特征值更新',                   //   content: `更新后的特征值(16进制格式):${characteristicValue}`,                   //   showCancel: false                   // })                 })                 that._deviceId = deviceId                 that._serviceId = serviceId                 that._characteristicId = item.uuid                 console.log(  that._deviceId )                 console.log(that._serviceId )                 console.log(that._characteristicId  )                 that.setData({                   deviceId: deviceId,                   serviceId: serviceId,                   characteristicId: item.uuid                 });               },               fail: (res) => {                 console.log(res)                 console.warn("监听特征值失败");               }             })           }         }       },       fail(res) {         console.error('getBLEDeviceCharacteristics', res)       }     })   },   //30分钟和60分钟定时关闭      writeBLECharacteristicValue11() {     console.log("发送数据11")     // 向蓝牙设备发送一个0x00的16进制数据     //开