前言：前面一段时间，公司项目里有一个需求 是获取当前手机地理位置当天的天气情况 将实时天气信息提供给客户。在网上搜索资料时候，发现知识很零碎，自己实现以后整理出来，方便于各位的学习与使用。
一、获取当前手机地理位置。
Html5提供接口plus.geolocation.getCurrentPosition(function(position) {
}, function(error) {});
可以用console.log(JSON.stringify(position));查看一下返回的内容，从中提取自己实际项目中需要地理信息。
在获取天气时候 为了优化用户体验。是需要做指引性质的操作的。例如 ：百度地图的提示，是否开启手机精准定位等等。即需要检测当前用户是否已经开启了定位，如果没有，指引用户完成手机定位开启。如果已经开启手机定位则跳过。
var that = this;
if(plus.os.name == "Android") {
var context = plus.android.importClass("android.content.Context");
var locationManager = plus.android.importClass("android.location.LocationManager");
var mainplus = plus.android.runtimeMainActivity();
var mainSvr = mainplus.getSystemService(context.LOCATION_SERVICE);
var androidIsOpen = mainSvr.isProviderEnabled(locationManager.GPS_PROVIDER);
if(!androidIsOpen) {
mui.confirm('开启位置服务,获取精准定位', ' ', ['去开启', '取消'], function(result) {
if(result.index == 0) {
var Intent = plus.android.importClass('android.content.Intent');
var Settings = plus.android.importClass('android.provider.Settings');
var intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); //可设置表中所有Action字段
mainplus.startActivity(intent);
}
}, 'div')
}
that.IsOpenGps = androidIsOpen;
} else {
var CLLocationManager = plus.ios.import("CLLocationManager");
var authorizationStatus = CLLocationManager.authorizationStatus();
switch(authorizationStatus) {
case 0:
mui.toast("未被授权位置信息,无法展示天气");
/// User has not yet made a choice with regards to this application未作出位置信息权限选择
break;
case 1:
mui.toast("未被授权位置信息,无法展示天气");
// This application is not authorized to use location services. Due
// to active restrictions on location services, the user cannot change
// this status, and may not have personally denied authorization未被授权位置信息
break;
case 2:
mui.toast("未被授权位置信息,无法展示天气");
// User has explicitly denied authorization for this application, or
// location services are disabled in Settings.明确拒绝授权位置信息
break;
case 3:
//mui.toast("已经获取位置信息");
// User has granted authorization to use their location at any time,
// including monitoring for regions, visits, or significant location changes.
break;
case 4:
//mui.toast("已经获取位置信息");
// User has granted authorization to use their location only when your app
// is visible to them (it will be made visible to them if you continue to
// receive location updates while in the background). Authorization to use
// launch APIs has not been granted.
break;
case 5:
mui.toast("未被授权位置信息,无法展示天气");
// This value is deprecated, but was equivalent to the new -Always value.值被弃用
break;
defalut:
break;
}
var isIosOpen = false;
if(authorizationStatus == 3 || authorizationStatus == 4) {
isIosOpen = true;
}
that.IsOpenGps = isIosOpen;
二、根据获取的地理信息获取当天的天气情况。
这里采用了百度天气的接口。
1.首先需要百度地图的API Key 申请地址：http://lbsyun.baidu.com/apiconsole/key
2.创建应用 选择微信小程序的应用类型。
3.获取天气JSON
var baidukey = "voUKGmLO***********Ia1qQc";//申请的AK //LatandLong 经纬度
function GetTodayWeather(city, LatandLong,callback) {
var jsonUrl = "http://api.map.baidu.com/telematics/v3/weather?location=" + LatandLong + "&output=json&ak=" + baidukey + "";
mui.ajax(jsonUrl, {
dataType: 'json',
type: 'get',
//timeout: 10000,
success: function(data) {
if(data.status == "success") {
callback(data.results[0])
}
},
error: function(xhr, type, error) {
//console.log(type)
mui.toast("网络异常,请稍候再试");
}
});
}
4.天气JSON
{
error: 0,
status: "success",
date: "2013-07-17",
results: [
{
currentCity: "北京市",
weather_data: [
{
date: "今天（周三）",
dayPictureUrl: "http://api.map.baidu.com/images/weather/day/duoyun.png",
nightPictureUrl: "http://api.map.baidu.com/images/weather/night/duoyun.png",
weather: "多云",
wind: "微风",
temperature: "23℃"
},
{
date: "明天（周四）",
dayPictureUrl: "http://api.map.baidu.com/images/weather/day/leizhenyu.png",
nightPictureUrl: "http://api.map.baidu.com/images/weather/night/zhongyu.png",
weather: "雷阵雨转中雨",
wind: "微风",
temperature: "29～22℃"
},
{
date: "后天（周五）",
dayPictureUrl: "http://api.map.baidu.com/images/weather/day/yin.png",
nightPictureUrl: "http://api.map.baidu.com/images/weather/night/duoyun.png",
weather: "阴转多云",
wind: "微风",
temperature: "31～23℃"
},
{
date: "大后天（周六）",
dayPictureUrl: "http://api.map.baidu.com/images/weather/day/duoyun.png",
nightPictureUrl: "http://api.map.baidu.com/images/weather/night/duoyun.png",
weather: "多云",
wind: "微风",
temperature: "31～24℃"
}
]
},
{
currentCity: "合肥市",
weather_data: [
{
date: "今天（周三）",
dayPictureUrl: "http://api.map.baidu.com/images/weather/day/duoyun.png",
nightPictureUrl: "http://api.map.baidu.com/images/weather/night/duoyun.png",
weather: "多云",
wind: "东风3-4级",
temperature: "27℃"
},
{
date: "明天（周四）",
dayPictureUrl: "http://api.map.baidu.com/images/weather/day/duoyun.png",
nightPictureUrl: "http://api.map.baidu.com/images/weather/night/duoyun.png",
weather: "多云",
wind: "东北风3-4级",
temperature: "35～27℃"
},
{
date: "后天（周五）",
dayPictureUrl: "http://api.map.baidu.com/images/weather/day/duoyun.png",
nightPictureUrl: "http://api.map.baidu.com/images/weather/night/duoyun.png",
weather: "多云",
wind: "南风",
temperature: "35～27℃"
},
{
date: "大后天（周六）",
dayPictureUrl: "http://api.map.baidu.com/images/weather/day/duoyun.png",
nightPictureUrl: "http://api.map.baidu.com/images/weather/night/duoyun.png",
weather: "多云",
wind: "东风",
temperature: "34～27℃"
}
]
}
]
}5.在回调函数里面解析自己需要的数据即可。
结语：希望对正在用Hbuilder 开发APP的你 有所帮助。