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一周学会小程序-日播天气

发布时间:2018-11-13 09:17 所属栏目:小程序开发教程

前言:欢迎收看一周学会小程序系列2-日播天气。看了苹果的自带天气软件,发现很简单使用。在小程序上看了一下天气的小程序,没有发现类似的,于是就模仿了一个。虽然模仿的不是很像,请大家不要见笑!

主要功能:

1. 通过定位或选取位置获取当天详细天气预报

(1)天气情况,包括温度「当前温度、最低温度和最高温度」、天气、空气质量、湿度、风向和风速、日出和日落、气压、能见度等; (2)生活指数,包括舒适度、穿衣、感冒、运动、旅游、紫外线强度、洗车、污染扩散等。

2. 24小时天气预报

3. 7天天气预报

细节:

增加类似于App的启动页

具体功能实现:

1.接口部分:使用京东万象提供的免费天气接口(京东万象官网地址)

2.页面部分:

(1)布局构思:主页面使用小程序推荐flex列布局,使用4个模板(当前天气温度信息模板、24小时模板、7天天气模板、生活指数模板),2个scrollview(24小时、7天天气预报) (2)详细模板使用:

  • 以当前天气信息为例(单一样式):
.wxss
<template name="nowTemplate">
  <view class='template-bgview'>
    <view class='temperature-bg'>
      <text class='temperature-text'>{{nowweather.tmp}}</text>
      <text class='temperature-degree'>°</text>
    </view>

    <view class='weather-bg'>
      <text>{{nowweather.cond.txt}}</text>
      <view class='weather-line'>|</view>
      <view class='aqi-bg'>
        <text class='aqi-text'>{{aqi.aqi + " " + aqi.qlty}}</text>
        <!-- <text>{{aqi.aqi}}</text> -->
      </view>
    </view>

    <view class='winter-bg'>
      <text class='hum-text'>{{"湿度 "+nowweather.hum+"%" + "  "}}</text>
      <text class='wind-text'>{{"  " + nowweather.wind.dir+" "+nowweather.wind.sc+"级"}}</text>
    </view>
  </view>
</template>

.wxss
.template-bgview {
  width: 100%;
  /* height: 175px; */
  align-items: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.temperature-bg {
  /* align-items: center; */
  display: flex;
  flex-direction: row;
  justify-content: center;
}

.temperature-text {
  font-size: 160rpx;
  font-weight: lighter;
}

.temperature-degree {
  font-size: 80rpx;
  font-weight: lighter;
}

.weather-bg {
  display: flex;
  flex-direction: row;
  justify-content: center;
}

.weather-line {
  margin-left: 5px;
  color: gray;
}

.aqi-bg {
  margin-left: 5px;
  background-color: yellow;
  border-radius: 3px;
}

.aqi-text {
margin-left: 5px;
margin-right: 5px;
}

.winter-bg {
  margin-top: 10px;
  display: flex;
  flex-direction: row;
  justify-content: center;
}

.hum-text {
  margin-right: 10px;
}

.wind-text {
  margin-left: 10px;
}
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模板使用: 1.模板页面导入 .wxml

<import src="../template/now-template.wxml" />
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.wxss

@import "../template/now-template.wxss";
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2.外层嵌套view使用

<view class='now-view'>
      <template is="nowTemplate" data="{{nowweather:weather.now, aqi:weather.aqi}}" />
    </view>
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以7天天气模板为例(列表样式): 使用方法相同,具体wxml和wxss代码如下
wxml
<template name="sevenDays">
  <view class='template-sevendays'>
    <view class='week' wx:if="{{index==0}}">{{item.week.week+"  (今天)"}}</view>
        <view class='week' wx:else>{{item.week.week+" ("+item.week.month+"/"+item.week.day+")"}}</view>

    <view class='condition' wx:if="{{isnight}}">{{item.cond.txt_n}}</view>
    <view wx:else class='condition'>{{item.cond.txt_d}}</view>
    <view class='hight-temperature'>{{item.tmp.max+"°"}}</view>
    <view class='low-temperature'>{{item.tmp.min+"°"}}</view>
  </view>
</template>


wxss
.template-sevendays {
  width: 100%;
  height: 30px;
  display: flex;
  flex-direction: row;
}

.week {
  margin-left: 10px;
  flex: 4;
}

.condition {
  text-align: center;
  flex: 4;
  /* width: 40%; */
}


								

}
.hight-temperature { text-align: center; flex: 1; } .low-temperature { text-align: center; flex: 1; 复制代码

3.数据交互部分:

原理:使用腾讯地图api获取当前位置经纬度,通过经纬度调用腾讯的逆地理编码函数获取当前位置信息,然后再通过当前位置获取当前的天气信息。解析天气信息数据,完成页面和数据的交互绑定。 (1)数据解析

// 解析天气信息函数 构建数据赋值
  analysisData: function(weather) {
    var that = this;
    var str = JSON.stringify(weather);
    var hourly_forecast = [];
    hourly_forecast.push({
      date: "现在",
      cond: weather.now.cond,
      tmp: weather.now.tmp
    });
    // 24小时 数组
    for (var i = 0; i < weather.hourly_forecast.length; i++) {
      var hourDic = weather.hourly_forecast[i];
      hourDic.date = hourDic.date.substr(11, 5);
      hourly_forecast.push(hourDic);
    }

    // 7天天气 数组
    var daily_forecast = [];
    // 使用forEach遍历
    weather.daily_forecast.forEach(function (dailyDic) {
      dailyDic.week = util.dateLater(dailyDic.date, 0);
      daily_forecast.push(dailyDic);
    });
 
    // 生活指数数组 按照指定顺序排列
    var suggestion = [];
    var comf = weather.suggestion.comf;
    comf.title = "舒适度";
    comf.id = 0;
    suggestion.push(comf);

    var drsg = weather.suggestion.drsg;
    drsg.title = "穿衣";
    drsg.id = 1;
    suggestion.push(drsg);

    var flu = weather.suggestion.flu;
    flu.title = "感冒";
    flu.id = 2;
    suggestion.push(flu);

    var sport = weather.suggestion.sport;
    sport.title = "运动";
    sport.id = 3;
    suggestion.push(sport);

    var trav = weather.suggestion.trav;
    trav.title = "旅游";
    trav.id = 4;
    suggestion.push(trav);

    var uv = weather.suggestion.uv;
    uv.title = "紫外线强度";
    uv.id = 5;
    suggestion.push(uv);

    var cw = weather.suggestion.cw;
    cw.title = "洗车";
    cw.id = 6;
    suggestion.push(cw);

    var air = weather.suggestion.air;
    air.title = "污染扩散";
    air.id = 7;
    suggestion.push(air);
    this.setData({
      weather: {
        hourly_forecast: hourly_forecast,
        daily_forecast: daily_forecast,
        aqi: weather.aqi.city,
        now: weather.now,
        astro: daily_forecast[0].astro,
        suggestion: suggestion
      },
      updateTimeHidden: false,
      updateTime: weather.basic.update.loc
    });

    // 2秒后隐藏更新时间
    var timer = setTimeout(function() {
      that.setData({
        updateTimeHidden: true
      });
    }, 2000);
  },
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(2)数据绑定,以7天天气为例

<view class='sevendays-bg'>
      <view class='sevendays-title'>7天天气预报</view>
      <scroll-view>
        <block wx:key="daily_forecast" wx:for="{{weather.daily_forecast}}" wx:for-item="item" wx:for-index="index">
          <view class='sevendays-templatebg'>
            <template is="sevenDays" data="{{item: item, isnight: isNight, index: index}}" />
          </view>
        </block>
      </scroll-view>
    </view>



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