前言

最近在学小程序开发,刚好学到天气预报功能的制作,于是给大家分享下。

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,新建应用


这是刚刚我们创建好的应用，点击添加KEY

选择WebAPI

这注册好我们的API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API的域名添加到request合法域名里面https://free-api.heweather.net

页面代码

.wxml

<view class="header">
  <view class="top">
    <view class="city">
      {{city}}
    </view>
    <view class="search">
      <input placeholder="输入城市名" bindinput="bindKeyInput" placeholder-style="color:white"></input>
      <view class="bt_search" bindtap="search">
        <icon type="search" size="18" color="white"></icon>
      </view>
    </view>
  </view>

  <view class="center">
    <view class="tmp">
      {{tmp}}°
    </view>
    <image mode="widthFix" class="cond-image" src="https://codermoyv.gitee.io/coder-moyv/assets/images/wechat/weather_custom/{{imgsrc}}.png">
    </image>
  </view>
  <view class="bottom">
    <view>{{wind_dir}} {{wind_sc}}级</view>
    <view>湿度 {{hum}}%</view>
    <view>气压 {{pres}}Pa</view>
  </view>
</view>
<view class="container">
  <view class="hourly_title">24小时预报</view>
  <scroll-view scroll-x="true" class="hourly">
    <view class="h_item" wx:for="{{hourly}}" wx:key="index">
      <text class="h_time">{{item.time}}</text>
      <view class="h_img">
        <image mode="widthFix" src="https://codermoyv.gitee.io/coder-moyv/assets/images/wechat/weather_custom/{{item.imgsrc}}.png"></image>
      </view>
      <text class="h_tmp">{{item.tmp}}°</text>
      <text class="h_wind_dir">{{item.wind_dir}}</text>
      <text class="h_wind_sc">{{item.wind_sc}}级</text>
    </view>

  </scroll-view>
  <view class="hourly_title">7天预报</view>
  <scroll-view scroll-x="true" class="daily">
    <view class="d_item" wx:for="{{daily_forecast}}" wx:key="index">
      <text class="d_txt">{{item.d_txt}}</text>
      <text class="d_date">{{item.d_date}}</text>
      <view class="h_img">
        <image mode="widthFix" src="https://codermoyv.gitee.io/coder-moyv/assets/images/wechat/weather_custom/{{item.imgsrc_d}}.png"></image>
      </view>
      <text class="h_tmp">{{item.tmp_min}}°~{{item.tmp_max}}°</text>
      <view class="h_img">
        <image mode="widthFix" src="https://codermoyv.gitee.io/coder-moyv/assets/images/wechat/weather_custom/{{item.imgsrc_n}}.png"></image>
      </view>
      <text class="d_wind_dir">{{item.wind_dir}}</text>
      <text class="d_wind_sc">{{item.wind_sc}}级</text>
    </view>

  </scroll-view>
</view>

<view class="footer">
-天气数据来自和风天气api-
</view>

.wxss

page {
  background-color: #f6f6f6;
}

.header {
  background-color:#64c8fa; 
  /* background-image: linear-gradient(to right, #64a0f8, #64c8fa); */
  height: 450rpx;
  padding-top: 32rpx;
  text-align: center;
}

.top {
  display: flex;
  justify-content: space-between;
  align-content: center;
  align-items: center;
}

.city {
  text-align: center;
  color: white;
  display: inline-block;
  font-size: 52rpx;
  margin-left: 32rpx;
}

.search {
  margin-right: 32rpx;
  border-radius: 8rpx;
  display: inline-flex;
  justify-content: center;
  align-content: center;
  align-items: center;
  background-color: rgba(0, 0, 0, 0.1);
  height: 70rpx;
}

.search input {
  width: 200rpx;
  padding: 18rpx 32rpx;
  text-align: left;
  color: white;
  display: inline-block;
}

.bt_search {
  border-radius: 0 8rpx 8rpx 0;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.1);
  display: inline-flex;
  justify-content: center;
  align-content: center;
  align-items: center;
}

.bt_search icon {
  margin: 8rpx 18rpx;
}

.center {
  display: flex;
  justify-content: space-between;
  align-content: center;
  align-items: center;
}

.tmp {
  margin-left: 18rpx;
  display: inline-block;
  font-size: 180rpx;
  color: white;
}
.cond-image{
  width: 200rpx;
  margin-right: 32rpx;
  margin-top: 32rpx;
}
.bottom{
  display: flex;
  justify-content: space-between;
  align-content: center;
  align-items: center;
}
.bottom view{
  color: white;
  margin: 32rpx;
}

.hourly_title{
  font-weight: bold;
  font-size: 42rpx;
   padding: 18rpx 32rpx;
}
.hourly {
  width: 718rpx;
  margin: 0 18rpx;
  border-radius: 18rpx;
  box-shadow: 0.1rem 0.1rem 0.5rem rgba(0, 0, 0, 0.15);
  white-space: nowrap;
  background-color: white;
}
.h_item {
  margin: 18rpx 0;
  display: inline-block;
  width: 143.5rpx;
  text-align: center;
  font-size: 28rpx;
}

.h_img {
  margin: 64rpx 0;
}

.h_img image {
  width: 60rpx;
}

.h_item text {
  display: block;
}

.h_time {
  color: gray;
}

.h_wind_dir {
  margin-top: 32rpx;
}

.h_wind_sc {
  color: gray;
}

.h_tmp {
  color: #027aff;
}

.daily {
  width: 718rpx;
  white-space: nowrap;
  margin: 0 18rpx;
  background-color: white;
  border-radius: 18rpx;
  box-shadow: 0.1rem 0.1rem 0.5rem rgba(0, 0, 0, 0.15);
}

.d_item {
  
  margin: 18rpx 0;
  display: inline-block;
  width: 179.5rpx;
  text-align: center;
  font-size: 28rpx;
}

.d_item text {
  display: block;
}

.d_date {
  color: gray;
}

.d_wind_dir {
  margin-top: 32rpx;
}

.d_wind_sc {
  color: gray;
}

.footer{
  font-size: 28rpx;
  color: gray;
  text-align: center;
  margin-top: 50rpx;
  margin-bottom: 18rpx;
}

.js

Page({

  /**
   * 页面的初始数据
   */
  data: {
    search_city: '',
    imgsrc:100
  },
  /**
   * 根据城市获取天气预报
   */
  getWeather(city) {
    let that = this
    //获取实况天气
    wx.request({
      url: 'https://free-api.heweather.net/s6/weather/now?key=你后台的key&location=' + city,
      success: function(res) {
        if (res.data.HeWeather6[0].status == 'unknown location') {
          wx.showToast({
            title: '抱歉！没有该城市的天气预报',
            icon: 'none',
            duration: 2000
          })
          return;
        }
        console.log(res)
        that.setData({
          city: city,
          tmp: res.data.HeWeather6[0].now.tmp,
          imgsrc: res.data.HeWeather6[0].now.cond_code,
          wind_dir: res.data.HeWeather6[0].now.wind_dir,
          wind_sc: res.data.HeWeather6[0].now.wind_sc,
          hum: res.data.HeWeather6[0].now.hum,
          pres: res.data.HeWeather6[0].now.pres
        })

        //获取24小时天气预报
        wx.request({
          url: 'https://free-api.heweather.net/s6/weather/hourly?key=你后台的key&location=' + city,
          success: function(res) {
            var arr = res.data.HeWeather6[0].hourly
            var hourly = []
            for (var i = 0; i < arr.length; i++) {
              hourly[i] = {
                "imgsrc": arr[i].cond_code,
                "tmp": arr[i].tmp,
                "time": arr[i].time.substring(11),
                "wind_dir": arr[i].wind_dir,
                "wind_sc": arr[i].wind_sc
              }
            }
            that.setData({
              hourly: hourly
            })

            var weekArray = new Array("周日", "周一", "周二", "周三", "周四", "周五", "周六");
            //获取未来7天天气预报
            wx.request({
              url: 'https://free-api.heweather.net/s6/weather/forecast?key=你后台的key&location=' + city,
              success: function(result) {
                //console.log(result)
                var arr = result.data.HeWeather6[0].daily_forecast
                var daily_forecast = []
                for (var i = 0; i < arr.length; i++) {
                  daily_forecast[i] = {
                    d_txt: i == 0 ? "今天" : weekArray[new Date(arr[i].date).getDay()],
                    d_date: arr[i].date.substring(5),
                    imgsrc_d: arr[i].cond_code_d,
                    imgsrc_n: arr[i].cond_code_n,
                    wind_dir: arr[i].wind_dir,
                    wind_sc: arr[i].wind_sc,
                    tmp_max: arr[i].tmp_max,
                    tmp_min: arr[i].tmp_min,
                    cond_txt_d: arr[i].cond_txt_d
                  }
                }
                that.setData({
                  daily_forecast: daily_forecast
                })
              }
            })

          }
        })

      }
    })
  },
  bindKeyInput(e) {
    this.setData({
     search_city:  e.detail.value
    })
  },
  search() {
    this.getWeather(this.data.search_city)
  },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function(options) {
    this.getWeather("广州")
  },

  
})

.json

{
  "usingComponents": {},
  "navigationBarTitleText": "天气预报"
}

注意问题（必看）

由于我的项目有用到天气预报的逐小时预报和7天预报，和风天气又必须实名才能获取到此数据，所以请登录和风天气后台进行实名认证

留言

如果有什么不懂或者有BUG，请在评论区留言或者加我qq1354760865，我会在第一时间回复！！！

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