根据坐标逆定位查询位置所在城市信息
onLoad: function (options) { let that = this wx.getLocation({ type: 'wgs84', // 默认为 wgs84 返回 gps 坐标，gcj02 返回可用于 wx.openLocation 的坐标 success: res => { const latitude = res.latitude const longitude = res.longitude wx.request({ //GET请求 location 位置坐标，格式：location= 39.984154,116.307490 // get_poi 是否返回周边POI列表：1.返回；0不返回(默认) get_poi=1 // key 是开发密钥（Key） url: "https://apis.map.qq.com/ws/geocoder/v1/?location=" + latitude + "," + longitude + "&key=" + locationId, success: (res) => { console.log(res) } }） }, }） }
根据两坐标计算距离
distance.js
function distance(la1, lo1, la2, lo2) { var La1 = la1 * Math.PI / 180.0; var La2 = la2 * Math.PI / 180.0; var La3 = La1 - La2; var Lb3 = lo1 * Math.PI / 180.0 - lo2 * Math.PI / 180.0; var s = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(La3 / 2), 2) + Math.cos(La1) * Math.cos(La2) * Math.pow(Math.sin(Lb3 / 2), 2))); s = s * 6378.164; //地球半径 return s = Math.round(s * 1000000000) / 1000000000; } export { distance }
onLoad
:
function (
options) {
let
that =
this
wx.
getLocation({
type:
'wgs84',
// 默认为 wgs84 返回 gps 坐标，gcj02 返回可用于 wx.openLocation 的坐标
success
:
res
=> {
// // success
const
latitude =
res.
latitude
const
longitude =
res.
longitude
that.
setData({
latitude:
latitude,
longitude:
longitude,
show:
false
})
let
CITY =
wx.
getStorageSync(
'city')
wx.
setStorageSync(
"location",
res);
wx.
request({
url:
"https://apis.map.qq.com/ws/geocoder/v1/?location=" +
latitude +
"," +
longitude +
"&key=" +
locationId,
success
: (
res)
=> {
if (
res.
statusCode ==
200) {
let
city =
res.
data.
result.
address_component.
city
let
address =
res.
data.
result.
ad_info.
city_code
//city_code
let
data = {}
if (
CITY !=
'') {
if (
city ==
CITY.
cityName) {
data.
cityNo =
address
}
else {
data.
cityCode =
CITY.
cityCode
}
that.
setData({
cityName:
CITY.
cityName,
city:
city
// code: address
})
}
else {
data.
cityNo =
address
that.
setData({
cityName:
city,
city:
city
// code: address
})
}
// 搜索学校
http.
request({
url:
'school/list',
data:
data,
success
: (
res)
=> {
let
location =
wx.
getStorageSync(
"location")
let
schoolDataListArr = [...
res.
data.
list]
if (
location !=
'') {
schoolDataListArr.
forEach(
element
=> {
let
m_x =
location.
latitude
let
m_y =
location.
longitude
let
s_x =
element.
location_X
let
s_y =
element.
location_Y
let
s =
distance(
m_x,
m_y,
s_x,
s_y)
if (
s >
1) {
let
S =
parseInt(
s)
element.
d_tance =
S +
"km"
}
else {
let
S = (
s *
1000).
toFixed(
1)
element.
d_tance =
S +
"m"
}
})
}
this.
setData({
show:
false,
schoolDataList:
schoolDataListArr
});
},
fail
:
function (
err) {
wx.
showToast({
title:
'网络错误',
icon:
"none"
})
}
})
}
else {
that.
setData({
show:
true
});
}
},
fail
:
function (
err) {
that.
setData({
show:
true
});
}
})
},
fail
:
function (
err) {
that.
setData({
show:
true
});
}
})