微信小程序 天气预报开发实例代码源码

data:{
 weatherApikey:'', //天气apikey，在http://apistore.baidu.com 上申请
 city:'', //城市名称
 areaid:'', //城市对应的id
 curWd:{}, //当天天气情况
 indexs:{}, //当天天气详情说明
 forecast:{} //未来4天的天气情况
},
onLoad:function(options){
 // 生命周期函数--监听页面加载
 this.setData({weatherApikey:getApp().globalData.weatherApikey});
 this.loadLocation();
},

//获取当前的位置信息，即经纬度
loadLocation: function() {
 var page = this;
 wx.getLocation({
 type: 'gcj02', // 默认为 wgs84 返回 gps 坐标，gcj02 返回可用于 wx.openLocation 的坐标
 success: function(res){
  // success
  var latitude = res.latitude;
  var longitude = res.longitude;

  //获取城市
  page.loadCity(latitude, longitude);
 }
 })
},

//通过经纬度获取城市
loadCity: function(latitude, longitude) {
 var page = this;
 //这个key是自己在http://apistore.baidu.com上申请的
 var key = "XSWBZ-EVQ3V-UMLPA-U4TP6-6MQFZ-UUFSL";
 var url = "http://apis.map.qq.com/ws/geocoder/v1/?location="+latitude+","+longitude+"&key="+key+"&get_poi=1";
 wx.request({
 url: url,
 data: {},
 method: 'GET', // OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT
 // header: {}, // 设置请求的 header
 success: function(res){
  // success
  var city = res.data.result.address_component.city;
  city = city.replace("市", ""); //将“市”去掉，要不然取不了天气信息
  page.setData({city: city});
  page.loadId(city);
 }
 })
},

//通过城市名称获取城市的唯一ID
loadId: function(city) {
 var page = this;
 var url = "http://apis.baidu.com/apistore/weatherservice/citylist";
 wx.request({
 url: url,
 data: {
  cityname: city
 },
 header: {
  apikey:page.data.weatherApikey
 }, 
 method: 'GET', // OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT
 success: function(res){
  // success
  var cityid = res.data.retData[0].area_id;

  page.setData({areaid: cityid});
  page.loadWeather(city, cityid);
 }
 })
},

//通过城市名称和城市ID获取天气情况
loadWeather: function(city, areaId) {
 var page = this;
 var url = "http://apis.baidu.com/apistore/weatherservice/recentweathers";
 wx.request({
 url: url,
 data: {
  cityname:city,
  cityid: areaId
 },
 header: {
  apikey: page.data.weatherApikey
 },
 method: 'GET', // OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT
 success: function(res){
  // success
  page.setData({curWd : res.data.retData.today, indexs: res.data.retData.today.index, forecast:res.data.retData.forecast});
 }
 })
},

//事件绑定，跳转到天气详情页面
gotoDetail: function(event) {
// console.log(this.data.areaid+"==在这里跳转=="+this.data.city);
wx.navigateTo({
 url: '../detail/detail?city='+this.data.city+"&cityid="+this.data.areaid
})
}