title: java.net.UnknownHostException: Unable to resolve host "<url>": No address associated with hostname and End of input at character 0 of
body: <p>I've created an app that loads a question from my web services, and it works fine. But, sometimes it crashes and I do not get the reason why this is happening, especially because I have also given it the required permissions. It works fine, but at random, it crashes and gives me this report.</p>
  
  <pre><code>private void sendContinentQuestions(int id) {
      // TODO Auto-generated method stub
  
      //Get the data (see above)
      JSONArray json = getJSONfromURL(id);
          try{
              for(int i=0; i &lt; json.length(); i++) {
                  HashMap&lt;String, String&gt; map = new HashMap&lt;String, String&gt;();
                  JSONObject jObject = json.getJSONObject(i);
                  longitude":"72.5660200"
                  String category_id = jObject.getString("category_id");
                  String question_id = jObject.getString("question_id");
                  String question_name = jObject.getString("question_name");
                  String latitude = jObject.getString("latitude");
                  String longitude = jObject.getString("longitude");
                  String answer = jObject.getString("answer");
                  String ansLatLng = latitude+"|"+longitude ; 
                  Log.v("## data:: ###",question_id+"--"+question_name+"-cat id-"+category_id+"--ansLatLng "+ansLatLng+" answer: "+answer);
  
                  all_question.add(new QuestionData(game_id,category_id,question_id,question_name,ansLatLng,answer));
              }
          }catch(JSONException e)        {
              Log.e("log_tag", "Error parsing data "+e.toString());
          }
      }
  
  
  }
   public JSONArray getJSONfromURL(int id){
  
      String response = "";
      URL url;
      try {
          url = new URL(Consts.GET_URL+"index.php/Api/getQuestion?cat_id="+id);
          HttpURLConnection http = (HttpURLConnection) url.openConnection();
          http.setRequestMethod("POST");
          InputStream is = http.getInputStream();
          BufferedReader br = new BufferedReader(new InputStreamReader(is));
          response = br.readLine();
          Log.v("###Response :: ###",response);
          http.disconnect();
      } catch (MalformedURLException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
      }catch (ProtocolException e) {
          // TODO Auto-generated catch block
          e.printStackTrace(); 
      } catch (IOException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
      } 
      //try parse the string to a JSON object
      JSONArray jArray = null;
      try{
  
          jArray = new JSONArray(response);
  
      }catch(JSONException e){
          Log.e("log_tag", "Error parsing data "+e.toString());
      }
  
      return jArray;
  }
  </code></pre>
  
  <hr>
  
  <pre><code>11-13 15:02:52.307: W/System.err(8012): java.net.UnknownHostException: Unable to resolve host "www.xyz.com": No address associated with hostname
  11-13 15:02:52.317: W/System.err(8012):     at java.net.InetAddress.lookupHostByName(InetAddress.java:424)
  11-13 15:02:52.317: W/System.err(8012):     at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
  11-13 15:02:52.317: W/System.err(8012):     at java.net.InetAddress.getAllByName(InetAddress.java:214)
  11-13 15:02:52.317: W/System.err(8012):     at libcore.net.http.HttpConnection.&lt;init&gt;(HttpConnection.java:70)
  11-13 15:02:52.317: W/System.err(8012):     at libcore.net.http.HttpConnection.&lt;init&gt;(HttpConnection.java:50)
  11-13 15:02:52.317: W/System.err(8012):     at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:340)
  11-13 15:02:52.317: W/System.err(8012):     at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:87)
  11-13 15:02:52.317: W/System.err(8012):     at libcore.net.http.HttpConnection.connect(HttpConnection.java:128)
  11-13 15:02:52.317: W/System.err(8012):     at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:316)
  11-13 15:02:52.317: W/System.err(8012):     at libcore.net.http.HttpEngine.connect(HttpEngine.java:311)
  11-13 15:02:52.317: W/System.err(8012):     at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:290)
  11-13 15:02:52.317: W/System.err(8012):     at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:240)
  11-13 15:02:52.317: W/System.err(8012):     at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:282)
  11-13 15:02:52.317: W/System.err(8012):     at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:177)
  11-13 15:02:52.327: W/System.err(8012):     at com.abc.xyz.ContinentActivity.getJSONfromURL(ContinentActivity.java:400)
  11-13 15:02:52.327: W/System.err(8012):     at com.abc.xyz.ContinentActivity.sendContinentQuestions(ContinentActivity.java:327)
  11-13 15:02:52.327: W/System.err(8012):     at com.abc.xyz.ContinentActivity.access$2(ContinentActivity.java:323)
  11-13 15:02:52.327: W/System.err(8012):     at com.abc.xyz.ContinentActivity$LoadQuestions.doInBackground(ContinentActivity.java:254)
  11-13 15:02:52.327: W/System.err(8012):     at com.abc.xyz.ContinentActivity$LoadQuestions.doInBackground(ContinentActivity.java:1)
  11-13 15:02:52.327: W/System.err(8012):     at android.os.AsyncTask$2.call(AsyncTask.java:287)
  11-13 15:02:52.327: W/System.err(8012):     at java.util.concurrent.FutureTask.run(FutureTask.java:234)
  11-13 15:02:52.327: W/System.err(8012):     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
  11-13 15:02:52.327: W/System.err(8012):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
  11-13 15:02:52.337: W/System.err(8012):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
  11-13 15:02:52.337: W/System.err(8012):     at java.lang.Thread.run(Thread.java:841)
  11-13 15:02:52.337: W/System.err(8012): Caused by: libcore.io.GaiException: getaddrinfo failed: EAI_NODATA (No address associated with hostname)
  11-13 15:02:52.337: W/System.err(8012):     at libcore.io.Posix.getaddrinfo(Native Method)
  11-13 15:02:52.337: W/System.err(8012):     at libcore.io.ForwardingOs.getaddrinfo(ForwardingOs.java:61)
  11-13 15:02:52.337: W/System.err(8012):     at java.net.InetAddress.lookupHostByName(InetAddress.java:405)
  11-13 15:02:52.337: W/System.err(8012):     ... 24 more
  11-13 15:02:52.337: E/log_tag(8012): Error parsing data org.json.JSONException: End of input at character 0 of 
  11-13 15:02:52.337: W/dalvikvm(8012): threadid=194: thread exiting with uncaught exception (group=0x417c1700)
  11-13 15:02:52.337: E/AndroidRuntime(8012): FATAL EXCEPTION: AsyncTask #5
  11-13 15:02:52.337: E/AndroidRuntime(8012): java.lang.RuntimeException: An error occured while executing doInBackground()
  11-13 15:02:52.337: E/AndroidRuntime(8012):     at android.os.AsyncTask$3.done(AsyncTask.java:299)
  11-13 15:02:52.337: E/AndroidRuntime(8012):     at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
  11-13 15:02:52.337: E/AndroidRuntime(8012):     at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
  11-13 15:02:52.337: E/AndroidRuntime(8012):     at java.util.concurrent.FutureTask.run(FutureTask.java:239)
  11-13 15:02:52.337: E/AndroidRuntime(8012):     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
  11-13 15:02:52.337: E/AndroidRuntime(8012):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
  11-13 15:02:52.337: E/AndroidRuntime(8012):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
  11-13 15:02:52.337: E/AndroidRuntime(8012):     at java.lang.Thread.run(Thread.java:841)
  11-13 15:02:52.337: E/AndroidRuntime(8012): Caused by: java.lang.NullPointerException
  11-13 15:02:52.337: E/AndroidRuntime(8012):     at com.abc.xyz.ContinentActivity.sendContinentQuestions(ContinentActivity.java:328)
  11-13 15:02:52.337: E/AndroidRuntime(8012):     at com.abc.xyz.ContinentActivity.access$2(ContinentActivity.java:323)
  11-13 15:02:52.337: E/AndroidRuntime(8012):     at com.abc.xyz.ContinentActivity$LoadQuestions.doInBackground(ContinentActivity.java:254)
  11-13 15:02:52.337: E/AndroidRuntime(8012):     at com.abc.xyz.ContinentActivity$LoadQuestions.doInBackground(ContinentActivity.java:1)
  11-13 15:02:52.337: E/AndroidRuntime(8012):     at android.os.AsyncTask$2.call(AsyncTask.java:287)
  11-13 15:02:52.337: E/AndroidRuntime(8012):     at java.util.concurrent.FutureTask.run(FutureTask.java:234)
  </code></pre>