<map id="map4select" longitude="{{longitude}}" 
latitude="{{latitude}}" markers="{{markers}}"
 scale="20" style="width:{{map_width}}px;height:{{map_height}}px" 
bindregionchange="regionchange" controls="{{controls}}">
 </map>

var app = getApp()

Page({
 data: {
 map_width: 380
 , map_height: 380
 }
 //show current position
 , onLoad: function (options) {
 console.log(options.schedule_id);
 var that = this;
 // 获取定位，并把位置标示出来
 that.setData({
  longitude: 113.324520
  , latitude: 23.099994
  , markers: [
  {
   id: 0
   , iconPath: "../imgs/ic_position.png"
   , longitude: 113.324520
   , latitude: 23.099994
   , width: 30
   , height: 30
  }
  ]
 })
 //set the width and height
 // 动态设置map的宽和高
 wx.getSystemInfo({
  success: function (res) {
  console.log(res.windowWidth);
  that.setData({
   map_width: res.windowWidth
   , map_height: res.windowWidth
   , controls: [{
   id: 1,
   iconPath: '../imgs/ic_location.png',
   position: {
    left: res.windowWidth / 2 - 8 ,
    top: res.windowWidth / 2 - 16 ,
    width: 30,
    height: 30 
   },
   clickable: true
   }]
  })
  }
 })
 }
 //获取中间点的经纬度，并mark出来
 , getLngLat: function () {
 var that = this;
 this.mapCtx = wx.createMapContext("map4select");
 this.mapCtx.getCenterLocation({
  success: function (res) {
  that.setData({
   longitude: 113.324520
   , latitude: 23.099994
   , markers: [
   {
    id: 0
    , iconPath: "../imgs/ic_position.png"
    , longitude: 113.324520
    , latitude: 23.099994
    , width: 30
    , height: 30
   }
   ]
  })
  }
 })
 }
 , regionchange(e) {
 // 地图发生变化的时候，获取中间点，也就是用户选择的位置
 if (e.type == 'end') {
  this.getLngLat()
 }
 }
 , markertap(e) {
 console.log(e)
 }
})