气象预报

获得气象信息url：public static final String GETWEATHERINFO_URL = "http://m.weather.com.cn/data/";

主要方法和类：
public String getWeatherInfo(String id){
HttpHelper http = new HttpHelper();
String url = Urls.GETWEATHERINFO_URL+id+".html";
System.out.println(url);
String info = http.getWebContents(url);
return info;
}

public class HttpHelper {

public  String getWebContents(String url) {

//创建一个http请求对象
HttpGet request = new HttpGet(url);
//创建HttpParams以用来设置HTTP参数
HttpParams params=new BasicHttpParams();
//设置连接超时或响应超时
//HttpConnectionParams.setConnectionTimeout(params, 3000);
//HttpConnectionParams.setSoTimeout(params, 5000);
//创建一个网络访问处理对象
HttpClient httpClient = new DefaultHttpClient(params);
try{
//执行请求参数项
HttpResponse response = httpClient.execute(request);
//判断是否请求成功
if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
//获得响应信息
String content = EntityUtils.toString(response.getEntity());
return content;
} else {
//网连接失败
}

}catch(Exception e) {
e.printStackTrace();
} finally {
//释放网络连接资源
httpClient.getConnectionManager().shutdown();
}
return null;
}

}

使用json解析：
JSONObject json = new JSONObject(result)
.getJSONObject("weatherinfo");
String cityName = json.getString("city");
String temperature1 = json.getString("temp1");


注意别忘了权限：
<uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />