废话

说到吃饭...呸，说到天气，其实这个并不属于地图或者导航的范畴，为什么高德要提供天气查询呢？两个字：讲究。天气查询可以用来改善app体验的功能，如：在跑步类app中加入天气的提醒；或者出去自驾游提前知道要下雨，就可以造作准备，是不是很贴心。

简介

天气查询的请求参数类为 WeatherSearch，city（城市）为必设参数，type（气象类型）为可选，包含有两种类型：WEATHER_TYPE_LIVE为实况天气；WEATHER_TYPE_FORECAST为预报天气，默认为 实况天气。

WeatherSearchQuery query = new WeatherSearchQuery("北京", WeatherSearchQuery.WEATHER_TYPE_LIVE);
WeatherSearch weathersearch=new WeatherSearch(this);
weathersearch.setOnWeatherSearchListener(new WeatherSearch.OnWeatherSearchListener() {
        @Override
        public void onWeatherLiveSearched(LocalWeatherLiveResult liveResult, int i) {
            
        }

        @Override
        public void onWeatherForecastSearched(LocalWeatherForecastResult forecastResult, int i) {

        }
    });
weathersearch.setQuery(query);
weathersearch.searchWeatherAsyn();

代码超级简单，关键来看两个回调，第一个回调是实况天气，第二个回调是预报天气，先来看第一个。

@Override
public void onWeatherLiveSearched(LocalWeatherLiveResult result, int i) {
    LocalWeatherLive liveResult = result.getLiveResult();
    liveTimeTxt.setText(liveResult.getReportTime()); //时间
    liveWeatherTxt.setText(liveResult.getWeather()); //气象
    liveTemperatureTxt.setText(liveResult.getTemperature() + "°C"); //温度
    liveWindDirectionTxt.setText(liveResult.getWindDirection()); //风向
    liveWindPowerTxt.setText(liveResult.getWindPower() + "级"); //风力
    liveHumidityTxt.setText(liveResult.getHumidity() + "%"); //湿度
}

通过返回数据，我们可以获得丰富的天气情况，包括气温，气象，风向，风力，湿度，城市等等。

再来看第二个回调，预报天气，这里会返回未来四天的天气，而且这里的数据分为白天和夜晚，是不是很丰富。

@Override
public void onWeatherForecastSearched(LocalWeatherForecastResult result, int i) {
    LocalWeatherForecast forecastResult = result.getForecastResult();
    forecastTimeTxt.setText(forecastResult.getReportTime());
    List<LocalDayWeatherForecast> weatherForecast = forecastResult.getWeatherForecast();

    List<Forecast> forecastList = new ArrayList<>();
    for (LocalDayWeatherForecast forecast : weatherForecast) {
        String dayWeather = forecast.getDayWeather(); //白天天气
        String dayTemp = forecast.getDayTemp(); //白天温度
        String dayWindDirection = forecast.getDayWindDirection(); //白天风向
        String dayWindPower = forecast.getDayWindPower(); //白天风力
        String nightWeather = forecast.getNightWeather(); //夜晚天气
        String nightTemp = forecast.getNightTemp(); //夜晚温度
        String nightWindDirection = forecast.getNightWindDirection(); //夜晚风向
        String nightWindPower = forecast.getNightWindPower(); //夜晚风力

        forecastList.add(new Forecast(dayWeather, dayTemp, dayWindDirection, dayWindPower,
                nightWeather, nightTemp, nightWindDirection, nightWindPower));
    }

    ForecastAdapter adapter = new ForecastAdapter(this, forecastList);
    forecastListView.setAdapter(adapter);
}

我们把数据解析成一个List<Forecast> forecastList，然后用ListView展示出来。

总结

天气就说这么多，本期节目就到这里，感谢大家收看，我们下期再见~