微信小程序实现天气预报功能（支持自动定位）（附源码）
目录
-
- 前言
- 效果图
- 天气API获取
- 微信小程序后台域名配置
- 页面代码
- 注意问题（必看）
- 源码
- 留言
前言
由于和风天气API的更新，之前写的那篇文章 可能会出现版本不兼容的 情况。所以 更新了 这个 使用新版API的 小程序。
效果图
天气API获取
这里我用的是和风天气的API，打开官网注册或者登陆你的账号
进入控制台,选择应用管理,新建应用（应用版本 选择 免费开发版，key的类型 选择 Web API）
创建成功后就可以看到 待会要用到的 key了
微信小程序后台域名配置
登陆小程序后台，分别点击开发和开发设置
点击修改，将我们要用到的 API的域名添加到request合法域名里面，https://devapi.qweather.com 和 https://geoapi.qweather.com 。
页面代码
.wxml
<view class="header-modular" wx:if="{{now}}">
<image class="bg-wave" src="https://codermoyv.gitee.io/coder-moyv/assets/images/wechat/bg_wave.gif">image>
<view class="row">
<view class="row location-wrap" bindtap="selectLocation">
<image class="icon" src="/images/icon_location.png">image>
<view class="title">{{City}} {{County}}view>
view>
view>
<view class="row">
<view class="tmp">{{now.temp}}°view>
<image class="icon-weather" src="https://codermoyv.gitee.io/coder-moyv/assets/images/wechat/weather_custom/{{now.icon}}.png">image>
view>
<view class="tips-wrap">
<view class="tips ">{{now.windDir}} {{now.windScale}}级view>
<view class="tips ">湿度 {{now.humidity}}%view>
<view class="tips ">气压 {{now.pressure}}Paview>
view>
view>
<view class="card-modular " wx:if="{{hourly}}">
<view class="title">24小时预报view>
<view class="card-wrap">
<block wx:for="{{hourly}}" wx:key="index">
<view class="item hourly">
<view class="text-gray">{{item.time}}view>
<image class="icon" src="https://codermoyv.gitee.io/coder-moyv/assets/images/wechat/weather_custom/{{item.icon}}.png">image>
<view class="text-primary mb-32">{{item.temp}}°view>
<view>{{item.windDir}}view>
<view class="text-gray">{{item.windScale}}级view>
view>
block>
view>
view>
<view class="card-modular" wx:if="{{daily}}">
<view class="title">7天预报view>
<view class="card-wrap">
<block wx:for="{{daily}}" wx:key="index">
<view class="item daily">
<view>{{item.dateToString}}view>
<view class="text-gray">{{item.date}}view>
<image class="icon" src="https://codermoyv.gitee.io/coder-moyv/assets/images/wechat/weather_custom/{{item.iconDay}}.png">image>
<view class="text-primary ">{{item.tempMin}}°~{{item.tempMax}}°view>
<image class="icon" src="https://codermoyv.gitee.io/coder-moyv/assets/images/wechat/weather_custom/{{item.iconNight}}.png">image>
<view>{{item.windDirDay}}view>
<view class="text-gray">{{item.windScaleDay}}级view>
view>
block>
view>
view>
.wxss
page {
background-color: linear-gradient(to bottom, #ffffff,#ffffff, #F6F6F6);
padding-bottom: 60rpx;
}
/* 工具类 */
.row {
display: flex;
align-items: center;
}
.mb-32{
margin-bottom: 32rpx;
}
/* 页面样式 */
.header-modular {
height: 400rpx;
background-color: #64C8FA;
background: linear-gradient(to bottom, #56CCF2, #2F80ED);
position: relative;
padding: 30rpx;
}
.header-modular .bg-wave {
width: 100vw;
position: absolute;
bottom: -2px;
left: 0;
right: 0;
height: 120rpx;
mix-blend-mode: screen;
}
.header-modular .location-wrap {
color: #ffffff;
font-weight: bold;
font-size: 36rpx;
}
.header-modular .location-wrap .icon {
width: 40rpx;
height: 40rpx;
margin-right: 8rpx;
}
.header-modular .tmp {
font-size: 200rpx;
/* font-weight: bold; */
color: #ffffff;
margin-right: auto;
}
.header-modular .icon-weather {
width: 200rpx;
height: 200rpx;
}
.header-modular .tips-wrap {
display: flex;
justify-content: space-between;
}
.header-modular .tips {
font-size: 28rpx;
opacity: 0.8;
color: #ffffff;
flex: 1;
}
.header-modular .tips:nth-child(3) {
text-align: right;
}
.header-modular .tips:nth-child(2) {
text-align: center;
}
.card-modular {
padding:0 30rpx;
margin-top: 30rpx;
}
.card-modular>.title {
font-size: 40rpx;
font-weight: bold;
position: relative;
margin-left: 14rpx;
margin-bottom: 16rpx;
}
.card-modular>.title::before {
content: "";
position: absolute;
left: -14rpx;
top: 10rpx;
bottom: 10rpx;
width: 8rpx;
border-radius: 10rpx;
background-color: #2F80ED;
}
.card-modular .card-wrap {
width: 690rpx;
border-radius: 18rpx;
background-color: #ffffff;
box-shadow: 0 0 20rpx 0 rgba(0, 0, 0, 0.2);
overflow-x: auto;
white-space: nowrap;
}
.card-modular .card-wrap .item {
display: inline-flex;
flex-direction: column;
align-items: center;
font-size: 28rpx;
padding: 18rpx 0;
}
.card-modular .card-wrap .item.hourly{
width: 138rpx;
}
.card-modular .card-wrap .item.daily{
width: 172.5rpx;
}
.card-modular .card-wrap .item .icon {
width: 60rpx;
height: 60rpx;
margin: 64rpx 0;
}
.card-modular .card-wrap .item .text-gray {
color: gray;
}
.card-modular .card-wrap .item .text-primary {
color: #2F80ED;
}
.js
const APIKEY = "";// 填入你申请的KEY
Page({
/**
* 页面的初始数据
*/
data: {
},
/**
* 生命周期函数--监听页面加载
*/
onLoad: function (options) {
this.getLocation()
},
//选择定位
selectLocation() {
var that = this
wx.chooseLocation({
success(res) {
//console.log(res)
that.setData({
location: res.longitude + "," + res.latitude
})
that.getWeather()
that.getCityByLoaction()
}
, fail() {
wx.getLocation({
type: 'gcj02',
fail() {
wx.showModal({
title: '获取地图位置失败',
content: '为了给您提供准确的天气预报服务,请在设置中授权【位置信息】',
success(mRes) {
if (mRes.confirm) {
wx.openSetting({
success: function (data) {
if (data.authSetting["scope.userLocation"] === true) {
that.selectLocation()
} else {
wx.showToast({
title: '授权失败',
icon: 'none',
duration: 1000
})
}
}, fail(err) {
console.log(err)
wx.showToast({
title: '唤起设置页失败，请手动打开',
icon: 'none',
duration: 1000
})
}
})
}
}
})
}
})
}
})
},
/**
* 获取定位
*/
getLocation() {
var that = this
wx.getLocation({
type: 'gcj02',
success(res) {
that.setData({
location: res.longitude + "," + res.latitude
})
that.getWeather()
that.getCityByLoaction()
}, fail(err) {
wx.showModal({
title: '获取定位信息失败',
content: '为了给您提供准确的天气预报服务,请在设置中授权【位置信息】',
success(mRes) {
if (mRes.confirm) {
wx.openSetting({
success: function (data) {
if (data.authSetting["scope.userLocation"] === true) {
wx.showToast({
title: '授权成功',
icon: 'success',
duration: 1000
})
that.getLocation()
} else {
wx.showToast({
title: '授权失败',
icon: 'none',
duration: 1000
})
that.setData({
location: "116.41,39.92"
})
that.getWeather()
that.getCityByLoaction()
}
}, fail(err) {
console.log(err)
wx.showToast({
title: '唤起设置页失败，请手动打开',
icon: 'none',
duration: 1000
})
that.setData({
location: "116.41,39.92"
})
that.getWeather()
that.getCityByLoaction()
}
})
} else if (mRes.cancel) {
that.setData({
location: "116.41,39.92"
})
that.getWeather()
that.getCityByLoaction()
}
}
})
}
})
},
/**
* 根据坐标获取城市信息
*/
getCityByLoaction() {
var that = this
wx.request({
url: 'https://geoapi.qweather.com/v2/city/lookup?key=' + APIKEY + "&location=" + that.data.location,
success(result) {
var res = result.data
if (res.code == "200") {
var data = res.location[0]
that.setData({
City: data.adm2,
County: data.name
})
} else {
wx.showToast({
title: '获取城市信息失败',
icon: 'none'
})
}
}
})
},
/**
* 获取天气
*/
getWeather() {
var that = this
wx.showLoading({
title: '加载中',
})
wx.request({
url: 'https://devapi.qweather.com/v7/weather/now?key=' + APIKEY + "&location=" + that.data.location,
success(result) {
var res = result.data
//console.log(res)
that.setData({
now: res.now
})
}
})
wx.request({
url: 'https://devapi.qweather.com/v7/weather/24h?key=' + APIKEY + "&location=" + that.data.location,
success(result) {
var res = result.data
//console.log(res)
res.hourly.forEach(function (item) {
item.time = that.formatTime(new Date(item.fxTime)).hourly
})
that.setData({
hourly: res.hourly
})
}
})
wx.request({
url: 'https://devapi.qweather.com/v7/weather/7d?key=' + APIKEY + "&location=" + that.data.location,
success(result) {
var res = result.data
//console.log(res)
res.daily.forEach(function (item) {
item.date = that.formatTime(new Date(item.fxDate)).daily
item.dateToString = that.formatTime(new Date(item.fxDate)).dailyToString
})
that.setData({
daily: res.daily
})
wx.hideLoading()
}
})
},
// 格式时间
formatTime(date) {
const year = date.getFullYear()
const month = date.getMonth() + 1
const day = date.getDate()
const hour = date.getHours()
const minute = date.getMinutes()
const second = date.getSeconds()
const weekArray = ["周日", "周一", "周二", "周三", "周四", "周五", "周六"]
const isToday = date.setHours(0, 0, 0, 0) == new Date().setHours(0, 0, 0, 0)
return {
hourly: [hour, minute].map(this.formatNumber).join(":"),
daily: [month, day].map(this.formatNumber).join("-"),
dailyToString: isToday ? "今天" : weekArray[date.getDay()]
}
},
// 补零
formatNumber(n) {
n = n.toString()
return n[1] ? n : '0' + n
},
/**
* 生命周期函数--监听页面初次渲染完成
*/
onReady: function () {
},
/**
* 生命周期函数--监听页面显示
*/
onShow: function () {
},
/**
* 生命周期函数--监听页面隐藏
*/
onHide: function () {
},
/**
* 生命周期函数--监听页面卸载
*/
onUnload: function () {
},
/**
* 页面相关事件处理函数--监听用户下拉动作
*/
onPullDownRefresh: function () {
},
/**
* 页面上拉触底事件的处理函数
*/
onReachBottom: function () {
},
/**
* 用户点击右上角分享
*/
onShareAppMessage: function () {
}
})
app.json
{
"pages": [
"pages/index/index"
],
"window": {
"backgroundTextStyle": "light",
"navigationBarBackgroundColor": "#fff",
"navigationBarTitleText": "天气预报",
"navigationBarTextStyle": "black"
},
"permission": {
"scope.userLocation": {
"desc": "你的位置信息将用于天气预报定位"
}
},
"style": "v2",
"sitemapLocation": "sitemap.json"
}
注意问题（必看）
- 为了确保 小程序 可以 正常使用，请先在和风天气 控制台 升级为 个人开发者（ps:该升级需要上传实名信息）。
- 在js代码中，请将刚刚申请的key 填写进 APIKEY 里面
源码
Gitee源码 （欢迎Start）
留言
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