Come posso effettuare connessioni URL asincrone su Android?

Question

Sto usando la seguente classe per connettermi al mio servizio web. Mi piacerebbe rendere questo asincrono. Come posso fare questo?

package org.stocktwits.helper; 

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.InputStreamReader; 

import org.apache.http.HttpEntity; 
import org.apache.http.HttpResponse; 
import org.apache.http.client.ClientProtocolException; 
import org.apache.http.client.HttpClient; 
import org.apache.http.client.methods.HttpGet; 
import org.apache.http.impl.client.DefaultHttpClient; 
import org.json.JSONException; 
import org.json.JSONObject; 

import android.util.Log; 

public class RestClient{ 

    private static String convertStreamToString(InputStream is) { 
     /* 
     * To convert the InputStream to String we use the BufferedReader.readLine() 
     * method. We iterate until the BufferedReader return null which means 
     * there's no more data to read. Each line will appended to a StringBuilder 
     * and returned as String. 
     */ 
     BufferedReader reader = new BufferedReader(new InputStreamReader(is)); 
     StringBuilder sb = new StringBuilder(); 

     String line = null; 
     try { 
      while ((line = reader.readLine()) != null) { 
       sb.append(line + "\n"); 
      } 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } finally { 
      try { 
       is.close(); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 
     } 

     return sb.toString(); 
    } 


    /* This is a test function which will connects to a given 
    * rest service and prints it's response to Android Log with 
    * labels "Praeda". 
    */ 
    public static JSONObject connect(String url) 
    { 

     HttpClient httpclient = new DefaultHttpClient(); 


     // Prepare a request object 
     HttpGet httpget = new HttpGet(url); 

     // Execute the request 
     HttpResponse response; 
     try { 
      response = httpclient.execute(httpget); 
      // Examine the response status 
      Log.i("Praeda",response.getStatusLine().toString()); 

      // Get hold of the response entity 
      HttpEntity entity = response.getEntity(); 

      if (entity != null) { 

       // A Simple JSON Response Read 
       InputStream instream = entity.getContent(); 
       String result= convertStreamToString(instream); 

       // A Simple JSONObject Creation 
       JSONObject json=new JSONObject(result); 

       // Closing the input stream will trigger connection release 
       instream.close(); 

       return json; 
      } 


     } catch (ClientProtocolException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } catch (JSONException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     return null; 
    } 

} 

Answer 1

In aggiunta a tutte le possibili soluzioni in commento di Ladlestein, c'è la risposta più semplice di avvolgere tutto ciò che in un AsyncTask.

Answer 2

È meglio utilizzare httpRequest su github. Ecco il link per voi: http://kevinsawicki.github.io/http-request/