markertap: function(e) {    //点击地图上的标记点时画出路线

let that2 = this;

var markerID = e.markerId; //获取当前点击markers数组里的经纬度

// console.log(markerID)

var Markerng = that2.data.markers[markerID-1].callout.content;

console.log(Markerng)

var endlat = that2.data.markers[markerID - 1].latitude;

var endlog = that2.data.markers[markerID - 1].longitude

var fromlat = that2.data.lat

var fromlog = that2.data.log

var dis

var dur

that2.setData({

MarkerNeirong: Markerng

})

wx.request({

url: 'https://apis.map.qq.com/ws/direction/v1/walking/?from=' + fromlat + ',' + fromlog + '&to=' + endlat + ',' + endlog + '&output=json&callback=cb&key=' + qqMapKey,

success: function (res) {

coors = res.data.result.routes[0].polyline

// console.log(res)

dis = res.data.result.routes[0].distance

dur = res.data.result.routes[0].duration

for (var i = 2; i < coors.length; i++) {

coors[i] = coors[i - 2] + coors[i] / 1000000

}

// console.log(coors)

//划线

var b = [];

for (var i = 0; i < coors.length; i = i + 2) {

b[i / 2] = {

latitude: coors[i], longitude: coors[i + 1]

};

// console.log(b[i / 2])

}

that2.setData({

polyline: [{

points: b,

color: "#99FF00",

width: 4,

dottedLine: false

}],

distance: dis,

duration: dur

},

)

}

})

},

onLoad: function() {                  

var that = this;

wx.getLocation({

success: function(res) {

var latitude = res.latitude

var longtitude = res.longitude

console.log(latitude,longtitude)

that.setData({

lat: latitude,

log: longtitude

})

},

})

}