昨天有接收到这通知的时候，但加了一些代码后，再也无法在小程序中收到onBLECharacteristicValueChange通知，但可以肯定说蓝牙模块已经接收到数据的。 //index.js //获取应用实例 var app = getApp() Page({   data: {     isOpenLock: false,     pwdHidden: true,     //isConnected: true,//测试     isConnected: false,     powerAmount: 0,//剩余电量百分比     opResult: "",     openPwd: "",     newPwd: "",     againPwd: "",     deveiceID: "",     deveiceName: "",     services: [],     CDffe5: "0000ffe5-0000-1000-8000-00805f9b34fb",//写数据通道服务UUID     CD180f: "0000180f-0000-1000-8000-00805f9b34fb",//电池电量报告通道服务UUID     CDffe0: "0000ffe0-0000-1000-8000-00805f9b34fb",//通知通道服务UUID     characteristicsffe5: null,//写数据通道服务特征UUID     characteristics180f: null,//电池电量报告通道服务UUID     characteristicsffe0: null,//通知通道服务特征UUID     tmpIndex: 0,   },   btnModalBack: function (event) {     // 回退前 delta(默认为1) 页面     wx.navigateBack({ delta: 1, });   },   btnModalCancel: function (event) {     this.setData({       openPwd: '',       newPwd: '',       againPwd: '',       opResult: '',       pwdHidden: true     });   },   btnOpenLock: function (event) {     this.setData({ opResult: '', pwdHidden: false, isOpenLock: true });   },   btnModifyOpenPWD: function (event) {     this.setData({ opResult: '', pwdHidden: false, isOpenLock: false });   },   btnModalOpenConfirm: function (event) {     var that = this;     that.setData({ opResult: "" });     if (null == that.data.openPwd || that.data.openPwd.length != 6) {       that.setData({ opResult: "密码不能为空或者长度不为6位" });       return;     }     var tmpArray = that.buildFrame("aa0006", that.data.openPwd);     console.log("开锁数据：", that.frameToString(tmpArray));     wx.writeBLECharacteristicValue({       deviceId: that.data.deveiceID,       serviceId: that.data.CDffe5,       characteristicId: that.data.characteristicsffe5.uuid,       value: tmpArray,       success: function (res) {         console.log(`发送数据成功${res.errMsg}`);         that.setData({ opResult: "数据发送成功" });       }     });   },   btnModalModifyConfirm: function (event) {     var that = this;     that.setData({ opResult: "" });     if (null == that.data.openPwd || that.data.openPwd.length != 6) {       that.setData({ opResult: "旧密码不能为空或者长度不为6位" });       return;     }     if (null == that.data.newPwd || that.data.newPwd.length != 6) {       that.setData({ opResult: "新密码不能为空或者长度不为6位" });       return;     }     if (null == that.data.againPwd || that.data.againPwd.length != 6) {       that.setData({ opResult: "新密码不能为空或者长度不为6位" });       return;     }     if (that.data.newPwd != that.data.againPwd) {       that.setData({ opResult: "输入的两次密码不一致" });       return;     }     var tmpArray = that.buildFrame("aa030c", that.data.openPwd + that.data.newPwd);     console.log("发送数据：", that.frameToString(tmpArray));     wx.writeBLECharacteristicValue({       deviceId: that.data.deveiceID,       serviceId: that.data.CDffe5,       characteristicId: that.data.characteristicsffe5.uuid,       value: tmpArray,       success: function (res) {         console.log(`发送数据成功${res.errMsg}`);         that.setData({ opResult: "修改数据发送成功" });       }     });   },   inputPwdUnFocus: function (event) {     this.setData({ openPwd: event.detail.value });   },   inputNewPwdUnFocus: function (event) {     this.setData({ newPwd: event.detail.value });   },   inputAgainPwdUnFocus: function (event) {     this.setData({ againPwd: event.detail.value });   },   getCharacteristics: function (tmpServiceId) {     var that = this;     wx.getBLEDeviceCharacteristics({       deviceId: that.data.deveiceID,       serviceId: tmpServiceId,       success: function (res) {         if (res.characteristics[0].properties.notify == true) {           wx.notifyBLECharacteristicValueChanged({             deviceId: that.data.deveiceID,             serviceId: tmpServiceId,             characteristicId: res.characteristics[0].uuid,             state: true,             success: function (res) {               console.log("uuid ble cvc success>>>>>>>", tmpServiceId);             },             fail: function (res) {               console.log("uuid ble cvc fail>>>>>>>", tmpServiceId);             },           });         }         if (res.characteristics[0].uuid.indexOf("ffe9") != -1) {           that.setData({ characteristicsffe5: res.characteristics[0] });         }         if (res.characteristics[0].uuid.indexOf("2a19") != -1) {           that.setData({ characteristics180f: res.characteristics[0] });           wx.readBLECharacteristicValue({             deviceId: that.data.deveiceID,             serviceId: that.data.CD180f,             characteristicId: that.data.characteristics180f.uuid,           });           setInterval(function () {             //定时执行获取电量的方法 2分钟读取一次             wx.readBLECharacteristicValue({               deviceId: that.data.deveiceID,               serviceId: that.data.CD180f,               characteristicId: that.data.characteristics180f.uuid,             });           }, 120000);         }         if (res.characteristics[0].uuid.indexOf("ffe4") != -1) {           that.setData({ characteristicsffe0: res.characteristics[0] });         }       }, fail: function (res) {         console.log(res);       }     });   },   buildOrderFrame: function (frameStr) {     var typedArray = new Uint8Array(frameStr.match(/[\da-f]{2}/gi).map(function (h) { return parseInt(h, 16); }));     return typedArray.buffer;   },   buildFrame: function (orderFix, orderContent) {     var array = new Array();     for (var i = 0; i < orderContent.length; i++) {       array[i] = orderContent.charCodeAt(i);     }     return this.buildOrderFrame(this.cs(orderFix + this.frameToString(array)));   },   cs: function (orderStr) {     var tmpInt = 0;     for (var i = 0; i < orderStr.length / 2; i++) {       tmpInt = tmpInt + parseInt(orderStr.substr(i * 2, 2), 16);     }     return orderStr + this.frameToString([(tmpInt & 0xFF)]) + "55";   },   frameToString: function (frame) {     return Array.prototype.map.call(new Uint8Array(frame), x => ('00' + x.toString(16)).slice(-2)).join('')   },   onLoad: function (query) {     var that = this;     if (null == query.deveiceID || null == query.deveiceName) {       return;     }     // 生命周期函数--监听页面加载     that.setData({       deveiceID: query.deveiceID,       deveiceName: query.deveiceName,     });     wx.onBLEConnectionStateChanged(function (res) {       // callback       console.log(`device ${res.deviceId} state has changed, connected: ${res.connected}`)       that.setData({ isConnected: res.connected });     });     wx.onBLECharacteristicValueChange(function (res) {       // callback       console.log(`characteristic ${res.characteristicId} has changed, now is ${res.value}`);       var hex = that.frameToString(res.value);       console.log("receive>>>>>>>>>>>>>>>", hex);       if (res.characteristicId == that.data.characteristics180f.uuid) {         that.setData({ powerAmount: parseInt(hex, 16) });       }       else if (res.characteristicId == that.data.characteristicsffe0.uuid) {         var result = hex.substr(2, 2);         that.setData({ opResult: result });         console.log("result>>>>>>>>>>>>>>>", result);       }     });     wx.createBLEConnection({       deviceId: that.data.deveiceID,       success: function (res) {         // success         console.log("连接蓝牙成功：" + res.errMsg);         that.setData({ isConnected: true });         wx.getBLEDeviceServices({           deviceId: that.data.deveiceID,           success: function (res) {             // success             console.log('device services:', res.services)             that.setData({ services: res.services });             for (var i = 0; i < res.services.length; i++) {               if (res.services[i].uuid == that.data.CDffe5)                 that.getCharacteristics(that.data.CDffe5);               else if (res.services[i].uuid == that.data.CD180f)                 that.getCharacteristics(that.data.CD180f);               else if (res.services[i].uuid == that.data.CDffe0)                 that.getCharacteristics(that.data.CDffe0);             }           },           fail: function (res) {             // fail             console.log(res);           },         });       },       fail: function (res) {         // fail         console.log("连接蓝牙失败：" + res.errMsg);         that.setData({ isConnected: false });       },     });   },   onUnload: function () {     this.setData({ isConnected: false });     if (null != this.data.deveiceID)       wx.closeBLEConnection();   }, })

安卓使用writeBLECharacteristicValue没有任何回调 [图片][图片] [图片]