需求 有个表单需要一键获取对应位置 并显示出来效果如下:
点击一键获取获取对应位置 显示在 picker 默认选中
前端 代码如下:
html
<view class="box_7 {{ showChange==1? 'change-style':'' }}">
<view class="box_11">
<view class="text-wrapper_6 {{ showChange==1? 'change-style-postiona':'' }}">
<text lines="1" class="text_29">考试地址</text>
<text lines="1" class="text_30" />
<text lines="1" class="text_31">*</text>
</view>
<picker class="region-select" mode="region" bindchange="bindRegionChange" value="{{region}}" custom-item="{{customItem}}">
<view class="picker">
{{region[0]}} {{region[1]}} {{region[2]}}
</view>
</picker>
<button bindtap="getUserLocation" class="get-position {{ showChange==1? 'change-style-postion':''}}">一键获取</button>
</view>
</view>
一定注意:小程序中要配置,不然获取位置不生效。
javascript
"permission": {
"scope.userLocation": {
"desc": "你的位置信息将用于小程序位置接口的效果展示"
}
},
"requiredPrivateInfos" : [ "getLocation" ],
小程序js如下:注意 获取到 经纬度之后 请求腾讯 api key 要进行申请 ,申请很快
申请地址 腾讯位置服务 - 立足生态,连接未来
javascript
getUserLocation: function () {
let that = this;
wx.getSetting({
success: (res) => {
if (res.authSetting['scope.userLocation'] != undefined && res.authSetting['scope.userLocation'] != true)
{//如果没有授权就提示需要授权
wx.showModal({
title: '请求授权当前位置',
content: '需要获取您的地理位置,请确认授权',
success: function (res) {
if (res.cancel) {
wx.showToast({
title: '拒绝授权',
icon: 'none',
duration: 1000
})
} else if (res.confirm) {
wx.openSetting({
success: function (dataAu) {
if (dataAu.authSetting["scope.userLocation"] == true) {
wx.showToast({
title: '授权成功',
icon: 'success',
duration: 1000
})
//再次授权,调用wx.getLocation的API
that.getLocations();
} else {
wx.showToast({
title: '授权失败',
icon: 'none',
duration: 1000
})
}
}
})
}
}
})
} else if (res.authSetting['scope.userLocation'] == undefined) {
that.getLocations();
}
else {
that.getLocations();
}
}
})
},
//获取经纬度
getLocations()
{
let that = this;
wx.getLocation({
type: 'wgs84',
success (res) {
const latitude = res.latitude
const longitude = res.longitude
wx.request({
url: 'https://apis.map.qq.com/ws/geocoder/v1/',
data: {
location: `${latitude},${longitude}`,
key: that.data.key,
get_poi: 0
},
success(res) {
if(res.statusCode==200){
const addressComponent = res.data.result.address_component;
const province = addressComponent.province;
const city = addressComponent.city;
const district = addressComponent.district;
var showChange =0;
if((province+city+district).length>=12){
showChange =1;
}
var result = [province, city, district];
that.setData({
region: result,
showChange: showChange,
addressSelect:1,
})
}else{
wx.showToast({
title: '定位获取失败,请手动选择~',
icon: 'none'
})
}
}
})
}
})
},