<!--pages/index/index.wxml-->
<view class='container'>
  <!--区域1：地区选择器-->
  <picker mode='region' bindchange='regionChange'>
    <view>{{region}}</view>
  </picker>
  <!--区域2：单行天气信息-->
  <text>{{now.tmp}}°C {{now.cond_txt}}</text>
  <!--区域3：天气图标-->
  <image src='/images/weather_icon/{{now.cond_code}}.png' mode='widthFix'></image>
  <!--区域4：多行天气信息-->
  <view class='detail'>
    <view class='bar'>
      <view class='box'>湿度</view>
      <view class='box'>气压</view>
      <view class='box'>能见度</view>
    </view>
    <view class='bar'>
      <view class='box'>{{now.hum}} %</view>
      <view class='box'>{{now.pres}} hPa</view>
      <view class='box'>{{now.vis}} km</view>
    </view>
    <view class='bar'>
      <view class='box'>风向</view>
      <view class='box'>风速</view>
      <view class='box'>风力</view>
    </view>
    <view class='bar'>
      <view class='box'>{{now.wind_dir}}</view>
      <view class='box'>{{now.wind_spd}} km/h</view>
      <view class='box'>{{now.wind_sc}} 级</view>
    </view>
  </view>
</view>

/* pages/index/index.wxss */
/*文本样式*/
text{
  font-size: 80rpx;
  color:#3C5F81;
}
/*图标样式*/
image{
  width: 220rpx;
}
/*区域4整体样式*/
.detail{
  width: 100%;
  display: flex;
  flex-direction: column;
}
/*区域4单元行样式*/
.bar{
  display: flex;
  flex-direction: row;
  margin: 20rpx 0;
}
/*区域4单元格样式*/
.box{
  width: 33.3%;
  text-align: center;
}

// pages/index/index.js
Page({
  /**
   * 页面的初始数据
   */
  data: {
    region: ['河北省', '秦皇岛市', '海港区'],
    now:{
      tmp:0,
      cond_txt:'未知',
      cond_code:'999',
      hum:0,
      pres:0,
      vis:0,
      wind_dir:0,
      wind_spd:0,
      wind_sc:0
    }
  },
  /**
   * 更新省市区信息
   */
  regionChange: function(e) {
    this.setData({
      region: e.detail.value
    });
    this.getWeather();//更新天气
  },
  /**
   * 获取实况天气数据
   */
  getWeather: function () {
    var that = this;//this不可以直接在wxAPI函数内部使用
    wx.request({
      url: 'https://free-api.heweather.com/s6/weather/now',
      data:{
        location:that.data.region[1],
        key:'1c570f246fe04fc9a81a115a60f35d5a'
      },
      success:function(res){
        //console.log(res.data);
        that.setData({now:res.data.HeWeather6[0].now});
      }
    })
  },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function(options) {
    this.getWeather();//更新天气
  },
})