微信小程序ibeacon三点定位详解
空余时间简单写了一个微信小程序ibeacon三点定位。
事先淘宝买了七八个ibeacon小设备，放置在办公司角落。分别设置三个ibeacon的位置坐标点，根据每一个ibeacon到已经开启蓝牙的目标物距离，计算出目标物在当前区域内坐标位置。适用于区域内购物指示。当然，进入该区域事先要打开手机蓝牙。
下面代码：
varapp=getApp()
Page({
data:{
motto:'HelloWorld',
openBLE:'打开蓝牙设备',
startBLEDiscovery:'初始化蓝牙设备',
startBLEDevices:'目标定位',
reStartSearchBLE:'重置蓝牙',
startSearchBLE:'默认空',
userInfo:{},
deviceId:'',
searchFlag:true,
deviceRSSI:'',
deviceName:'',
deviceId:[],
advertisServiceUUIDs:[],
advertisData:[],
canvasPointX:'',
canvasPointY:'',
avatarUrl:'../index/bg-image.jpg',
showPosition:''
},
//事件处理函数
bindViewTap:function(){
wx.navigateTo({
url:'../logs/logs'
})
},
onLoad:function(){
varthat=this
//调用应用实例的方法获取全局数据
//that.setData({deviceId:opt.deviceId})
app.getUserInfo(function(userInfo){
//更新数据
that.setData({
userInfo:userInfo
})
//判断兼容性
if(wx.openBluetoothAdapter){
//打开蓝牙适配器，如果没有打开showtoast
wx.openBluetoothAdapter({
success:function(res){
//success
//获取本机的蓝牙适配器状态
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本机是否已经打开蓝牙设备
wx.showToast({title:'请打开本机蓝牙设备，重新扫码',duration:10000})
},
complete:function(res){
//complete
}
})
}else{
//如果希望用户在最新版本的客户端上体验您的小程序，可以这样子提示
wx.showModal({
title:'提示',
content:'当前微信版本过低，无法使用该功能，请升级到最新微信版本后重试。'
})
}
})
},
startBLEDevices:function(){
varthat=this
wx.startBluetoothDevicesDiscovery({
services:[],
success:function(res){
//获取本机蓝牙设备状态
//success
that.setData({
showPosition:setInterval(that.devicesFunc,1000)
})
},
fail:function(res){
//fail
},
complete:function(res){
//complete
}
})
},
//startBLEDevices:function(){
//varthat=this
//that.setData({
//showPosition:setInterval(that.devicesFunc,1000)
//})
//},
devicesFunc:function(){
varthat=this
wx.getBluetoothDevices({
success:function(res){
//console.log(res);
vararrayRSSI=newArray();
vararraydeviceName=newArray();
vararraydeviceId=newArray();
//vararrayUUIDs=newArray();
vararrayadvertisData=newArray();
varpointADistance='';
varpointBDistance='';
varpointCDistance='';
for(vari=0;i3){
//根据arrayRSSI进行信号强弱排序.距离越远rssi值越小
for(vari=0;i0&&pointDY>0){
wx.showToast({title:'欢迎进入25楼craft',duration:4000});
}
that.setData({
canvasPointX:pointDX,
canvasPointY:pointDY
})
//创建画布
//计算坐标点在规定canvas上的位置显示
varcontext=wx.createCanvasContext();
context.setStrokeStyle("#00ff00");
//a,b,c,d,e,fa,b起始坐标，c半径，d，e起始和终止角度
context.arc(that.data.canvasPointX*30,that.data.canvasPointY*30,5,0,2*Math.PI);
context.fill();
wx.drawCanvas({
canvasId:'firstCanvas',
actions:context.getActions()//获取绘图动作数组
})
wx.showModal({title:'X轴:'+pointDX+'Y轴:'+pointDY,duration:5000});
//开始网络请求
wx.request({
url:'http://craftww.cn/weixinIbeacon/index.php',
data:{},
method:'GET',//OPTIONS,GET,HEAD,POST,PUT,DELETE,TRACE,CONNECT
//header:{},//设置请求的header
success:function(res){
//success
},
fail:function(res){
//fail
},
complete:function(res){
//complete
}
})
}else{
wx.showToast({title:'正在搜索...',duration:1000})
开始网络请求
wx.request({
url:'http://craftww.cn/weixinIbeacon/index.php',
data:{},
method:'GET',//OPTIONS,GET,HEAD,POST,PUT,DELETE,TRACE,CONNECT
//header:{},//设置请求的header
success:function(res){
//success
},
fail:function(res){
//fail
},
complete:function(res){
//complete
}
})
}
},
fail:function(res){
//fail
},
complete:function(res){
//complete
}
})
},
//动态显示
createList:function(thisName){
varthat=this
that.setData({
array:[{deviceDistance:"1"},{deviceDistance:"1"},{deviceDistance:"1"},{deviceDistance:"1"},{deviceDistance:"1"}]
})
},
reStartSearchBLE:function(){
varthat=this
//清除本地数据缓存
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);
//断开蓝牙
varthat=this
wx.closeBluetoothAdapter({
success:function(res){
//success
console.log('重置成功');
//打开蓝牙适配器，如果没有打开showtoast
wx.openBluetoothAdapter({
success:function(res){
//success
//获取本机的蓝牙适配器状态
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
})
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