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微信小程序天气预报功能实现(支持自动定位,附源码)

时间：2022-07-04 14:06:29|栏目：JavaScript代码|点击： 次

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}}Pa</view>
	</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）

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