var app = getApp() Page({ data: {  motto: 'Hello World',  openBLE:'打開(kāi)藍(lán)牙設(shè)備',  startBLEDiscovery:'初始化藍(lán)牙設(shè)備',  startBLEDevices:'目標(biāo)定位',  reStartSearchBLE:'重置藍(lán)牙',  startSearchBLE:'默認(rèn)空',  userInfo: {},  deviceId: '',  searchFlag:true,  deviceRSSI:'',  deviceName:'',  deviceId:[],  advertisServiceUUIDs: [],  advertisData:[],  canvasPointX:'',  canvasPointY:'',  avatarUrl:'../index/bg-image.jpg',  showPosition:''  }, //事件處理函數(shù) bindViewTap: function() {  wx.navigateTo({   url: '../logs/logs'  }) }, onLoad: function () {   var that = this  //調(diào)用應(yīng)用實(shí)例的方法獲取全局?jǐn)?shù)據(jù)   //that.setData({ deviceId: opt.deviceId })   app.getUserInfo(function(userInfo){   //更新數(shù)據(jù)    that.setData({    userInfo:userInfo   })   //判斷兼容性   if (wx.openBluetoothAdapter) {    //打開(kāi)藍(lán)牙適配器，如果沒(méi)有打開(kāi) showtoast   wx.openBluetoothAdapter({    success: function(res){     // success     //獲取本機(jī)的藍(lán)牙適配器狀態(tài)     wx.getBluetoothAdapterState({      success: function(res){       // success       that.setData({        searchFlag:true       })       },      fail: function(res) {       // fail        that.setData({        searchFlag:false       })      },      complete: function(res) {       // complete      }     })    },    fail: function(res) {     // fail 本機(jī)是否已經(jīng)打開(kāi)藍(lán)牙設(shè)備      wx.showToast({title:'請(qǐng)打開(kāi)本機(jī)藍(lán)牙設(shè)備，重新掃碼', duration:10000 })    },    complete: function(res) {     // complete    }   })   } else {     // 如果希望用戶在最新版本的客戶端上體驗(yàn)?zāi)男〕绦颍梢赃@樣子提示     wx.showModal({      title: '提示',      content: '當(dāng)前微信版本過(guò)低，無(wú)法使用該功能，請(qǐng)升級(jí)到最新微信版本后重試。'     })    }       })  },    startBLEDevices: function(){    var that = this      wx.startBluetoothDevicesDiscovery({      services: [],      success: function(res){        //獲取本機(jī)藍(lán)牙設(shè)備狀態(tài)           // success        that.setData({        showPosition:setInterval(that.devicesFunc,1000)       })        },      fail: function(res) {      // fail      },     complete: function(res) {      // complete      }    })  }, // startBLEDevices: function(){ //  var that = this //  that.setData({ //   showPosition:setInterval(that.devicesFunc,1000) //  })  // },  devicesFunc: function(){    var that = this         wx.getBluetoothDevices({     success: function(res){      // console.log(res);       var arrayRSSI = new Array();      var arraydeviceName = new Array();      var arraydeviceId = new Array();      // var arrayUUIDs = new Array();      var arrayadvertisData = new Array();       var pointADistance = '';      var pointBDistance = '';      var pointCDistance = '';       for(var i = 0; i<res.devices.length;i++){         //console.log(res.devices[i].name);        if(res.devices[i].name.indexOf('craft')==0){         //console.log(res.devices[i]);        arrayRSSI.push(res.devices[i].RSSI);        arraydeviceName.push(res.devices[i].name);         arraydeviceId[i]= res.devices[i].deviceId;        arrayUUIDs[i]= res.devices[i].advertisServiceUUIDs[i];        arrayadvertisData[i]= res.devices[i].advertisData  ;        調(diào)用計(jì)算rssi對(duì)應(yīng)距離的函數(shù)        var iRssi = Math.abs(arrayRSSI[i]);         var power = (iRssi-59)/(10*2.0);         var mm = Math.pow(10, power);         console.log(arraydeviceName[i]+"距離的位置是"+mm+"米");          取01，02，03分別為，（2，0），（2，2），（0，2）固定坐標(biāo)點(diǎn)，做定位                if(res.devices[i].name.indexOf('craft01')==0){                 var pointARSSi = res.devices[i].RSSI ;        var iRssi = Math.abs(pointARSSi);         var power = (iRssi-55)/(10*2.0);         var pointADistance = Math.pow(10, power);         console.log("a"+pointADistance);         console.log(pointARSSi);                }        if(res.devices[i].name.indexOf('craft02')==0){                 var pointBRSSi = res.devices[i].RSSI;        var iRssi = Math.abs(pointBRSSi);         var power = (iRssi-55)/(10*2.0);         var pointBDistance = Math.pow(10, power);         console.log("b"+pointBDistance);        console.log(pointBRSSi);                 }        if(res.devices[i].name.indexOf('craft03')==0){                var pointCRSSi = res.devices[i].RSSI;        var iRssi = Math.abs(pointCRSSi);         var power = (iRssi-57)/(10*2.0);          var pointCDistance = Math.pow(10, power);         console.log("c"+pointCDistance);         console.log(pointCRSSi);         }        }       }       // 從 arrayRSSI 取三個(gè)距離定位點(diǎn)最近的ibeacon參與定位      if(arrayRSSI.length > 3){        //根據(jù)arrayRSSI進(jìn)行信號(hào)強(qiáng)弱排序.距離越遠(yuǎn)rssi值越小        for(var i = 0 ; i < arrayRSSI.length ; i ++){         for(var j = i+1 ; j< arrayRSSI.length ; j++){          if(arrayRSSI[i]<arrayRSSI[j]){           var select = arrayRSSI[i];           arrayRSSI[i] = arrayRSSI[j];           arrayRSSI[j] = select;          }         }         }        //獲取最近的三個(gè)距離        for(var i = 0 ; i < 3; i++){          if(i==0){            var pointARSSi = res.devices[i].RSSI ;           var iRssi = Math.abs(pointARSSi);            var power = (iRssi-55)/(10*2.0);            var pointADistance = Math.pow(10, power);            console.log("a"+pointADistance);            console.log(pointARSSi);           }          if(i==1){                      var pointBRSSi = res.devices[i].RSSI;           var iRssi = Math.abs(pointBRSSi);            var power = (iRssi-55)/(10*2.0);            var pointBDistance = Math.pow(10, power);            console.log("b"+pointBDistance);           console.log(pointBRSSi);           }          if(i==2){            var pointCRSSi = res.devices[i].RSSI;           var iRssi = Math.abs(pointCRSSi);            var power = (iRssi-57)/(10*2.0);             var pointCDistance = Math.pow(10, power);            console.log("c"+pointCDistance);            console.log(pointCRSSi);           }          }       }         //獲取定位點(diǎn)的x和y        if(!pointADistance==''&&!pointBDistance==''&&!pointCDistance==''){        var pointDX='';var pointDY = '';        var p = Math.pow(pointADistance,2)/10-Math.pow(pointBDistance,2)/10;        pointDX = 2.5 - p;          var m = Math.pow(pointADistance,2)/10-Math.pow(pointCDistance,2)/10;        pointDY = 2.5 - m;          console.log('目標(biāo)所在位置X是'+pointDX);        console.log('目標(biāo)所在位置Y是'+pointDY);         if(pointDX > 0 && pointDY > 0){          wx.showToast({title:'歡迎進(jìn)入25樓craft', duration:4000 });          }        that.setData({          canvasPointX:pointDX,          canvasPointY:pointDY         })                //創(chuàng)建畫(huà)布         //計(jì)算坐標(biāo)點(diǎn)在規(guī)定canvas上的位置顯示        var context = wx.createCanvasContext();         context.setStrokeStyle("#00ff00");        //a,b,c,d,e,f  a,b起始坐標(biāo)，c半徑，d，e起始和終止角度         context.arc(that.data.canvasPointX*30,that.data.canvasPointY*30,5,0,2*Math.PI);        context.fill();        wx.drawCanvas({         canvasId: 'firstCanvas',         actions: context.getActions() // 獲取繪圖動(dòng)作數(shù)組        })          wx.showModal({title:'X軸:'+pointDX+'Y軸:'+pointDY, duration:5000 });          //開(kāi)始網(wǎng)絡(luò)請(qǐng)求         wx.request({          url: 'http://craftww.cn/weixinIbeacon/index.php',          data: {},          method: 'GET', // OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT          // header: {}, // 設(shè)置請(qǐng)求的 header          success: function(res){           // success          },          fail: function(res) {           // fail          },          complete: function(res) {           // complete          }         })         }else{        wx.showToast({title:'正在搜索...', duration:1000 })         開(kāi)始網(wǎng)絡(luò)請(qǐng)求         wx.request({          url: 'http://craftww.cn/weixinIbeacon/index.php',          data: {},          method: 'GET', // OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT          // header: {}, // 設(shè)置請(qǐng)求的 header          success: function(res){           // success          },          fail: function(res) {           // fail          },          complete: function(res) {           // complete          }         })        }       },     fail: function(res) {      // fail     },     complete: function(res) {      // complete     }    })   } ,  //動(dòng)態(tài)顯示  createList: function(thisName){   var that = this      that.setData({      array:[{deviceDistance:"1"},{deviceDistance:"1"},{deviceDistance:"1"},{deviceDistance:"1"},{deviceDistance:"1"}]     })   },  reStartSearchBLE: function(){    var that = this  //清除本地?cái)?shù)據(jù)緩存  wx.stopBluetoothDevicesDiscovery({   success: function(res){    // success   },   fail: function(res) {    // fail   },   complete: function(res) {    // complete   }  })   wx.clearStorageSync();   clearInterval(that.data.showPosition);    console.log(that.data.showPosition);  // that.context.clearRect(0,0,canvas.width,canvas.height);   //斷開(kāi)藍(lán)牙   var that = this   wx.closeBluetoothAdapter({    success: function(res){     // success     console.log('重置成功');     //打開(kāi)藍(lán)牙適配器，如果沒(méi)有打開(kāi) showtoast   wx.openBluetoothAdapter({    success: function(res){     // success     //獲取本機(jī)的藍(lán)牙適配器狀態(tài)     wx.getBluetoothAdapterState({      success: function(res){       // success            },      fail: function(res) {       // fail       },      complete: function(res) {       // complete      }     })    },    fail: function(res) {        },    complete: function(res) {     // complete    }   })    },    fail: function(res) {     // fail    },    complete: function(res) {     // complete    }   })  }  //zheli})