huoqufanwei: function (params) {
var that = this;
wx.getLocation({
isHighAccuracy: true,
type: 'gcj02',//用腾讯地图坐标拾取器才能和这个对上
success: function (res) {
var latitude = res.latitude;
console.log("当前纬度 = " + latitude);
var longitude = res.longitude;
console.log("当前经度 = " + longitude);
var speed = res.speed;
console.log("当前速度" + speed);
var accuracy = res.accuracy;
console.log("当前精确度" + accuracy);
that.setData({
juli2: that.getDistance(latitude, longitude, 31.175808,121.180847),
ZXlatitude:latitude,
ZXlongitude:longitude,
ZXscale:1
})
}
})
},
//距离计算
getDistance: function (lat1, lng1, lat2, lng2) {
lat1 = lat1 || 0;
lng1 = lng1 || 0;
lat2 = lat2 || 0;
lng2 = lng2 || 0;
var rad1 = lat1 * Math.PI / 180.0;
var rad2 = lat2 * Math.PI / 180.0;
var a = rad1 - rad2;
var b = lng1 * Math.PI / 180.0 - lng2 * Math.PI / 180.0;
var r = 6378137;
var distance = r * 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2) + Math.cos(rad1) * Math.cos(rad2) * Math.pow(Math.sin(b / 2), 2)));
return distance;
}
<view class="Wrap">
<map id="ditu" class='map' longitude='{{ZXlongitude}}' latitude='{{ZXlatitude}}' scale='{{scale}}'
bindpoitap="bindcontroltap" bindcallouttap='bindcallouttap1' show-location>
</map>
<view>{{juli2}}</view>
<view bind:tap="huoqufanwei">定位</view>
</view>