Json을 AsyncTask로 파싱하는 동안 AndroidRuntime excption - Foursquare 장소

Question

나는 foursquare 장소를 파싱하고 목록에 표시하려고합니다. 이전에, 나는 asyncTask와 Runtime excpetion없이 광고를했다. 그래서 저는 하나를 추가합니다, 그러나 저는 여전히 그 실수를 가지고 있습니다. 나는 안드로이드에 대해 새로운데, 나는 그 오류를 정말로 이해하지 못한다.

다음은 로그 캣에게

07-26 13:15:16.595: E/AndroidRuntime(11330): FATAL EXCEPTION: main 
07-26 13:15:16.595: E/AndroidRuntime(11330): android.os.NetworkOnMainThreadException 
07-26 13:15:16.595: E/AndroidRuntime(11330): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1118) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at java.net.InetAddress.lookupHostByName(InetAddress.java:385) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at java.net.InetAddress.getAllByName(InetAddress.java:214) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:670) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:509) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at com.mykong.android.JSonResultActivity$BackgroundTask.doInBackground(JSonResultActivity.java:197) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at com.mykong.android.JSonResultActivity$BackgroundTask.onPostExecute(JSonResultActivity.java:238) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at com.mykong.android.JSonResultActivity$BackgroundTask.onPostExecute(JSonResultActivity.java:1) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at android.os.AsyncTask.finish(AsyncTask.java:631) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at android.os.AsyncTask.access$600(AsyncTask.java:177) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at android.os.Handler.dispatchMessage(Handler.java:99) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at android.os.Looper.loop(Looper.java:137) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at android.app.ActivityThread.main(ActivityThread.java:4921) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at java.lang.reflect.Method.invokeNative(Native Method) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at java.lang.reflect.Method.invoke(Method.java:511) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794) 
07-26 13:15:16.595: E/AndroidRuntime(11330): at dalvik.system.NativeStart.main(Native Method) 

입니다 그리고 여기에 코드

public class JSonResultActivity extends ListActivity { 
    private static String urlSearch = "https://api.foursquare.com/v2/venues/search?ll=40.7,-74&radius=0&client_id=50QO00GZKUPA25PDGO1IY3UHMK3IBEMO2F4CTO5M2DBLVGQD&client_secret=MVJZGC3WT4V55DQPJYBFNZ5X3IACIDLFVM1HKA2WBTEHAXDF&v=20130703"; 



@Override 
public void onCreate(Bundle savedInstanceState) { 
    final String method = "GET"; 
    super.onCreate(savedInstanceState); 
    new BackgroundTask(urlSearch, method, null).execute(); 
} 

final class BackgroundTask extends AsyncTask<String, Void, String> { 

    ArrayList<HashMap<String, String>> venuesList = new ArrayList<HashMap<String, String>>(); 

    private static final String TAG_VENUES = "venues"; 
    private static final String TAG_ID = "id"; 
    private static final String TAG_NAME = "name"; 
    private static final String TAG_CONTACT = "contact"; 
    private static final String TAG_LOCATION = "location"; 
    private static final String TAG_ADDRESS = "address"; 
    private static final String TAG_CROSS_STREET = "crossStreet"; 
    private static final String TAG_CITY = "city"; 
    private static final String TAG_STATE = "state"; 
    private static final String TAG_POSTAL_CODE = "postalCode"; 
    private static final String TAG_COUNTRY = "country"; 
    private static final String TAG_LAT = "lat"; 
    private static final String TAG_LNG = "lng"; 
    private static final String TAG_DISTANCE = "distance"; 

    public InputStream is = null; 
    public JSONObject jObj; 
    public String json = "";  


    // variables passed in: 
    String url; 
    String method = "GET"; 
    List<NameValuePair> params; 

    // constructor 
    public BackgroundTask(String url, String method, 
     List<NameValuePair> params) 
    { 
     this.url = url; 
     this.method = method; 
     this.params = params; 
    } 





    @Override 
    public String doInBackground(String... urls) { 

     String url = "https://api.foursquare.com/v2/venues/search?ll=40.7,-74&radius=0&client_id=50QO00GZKUPA25PDGO1IY3UHMK3IBEMO2F4CTO5M2DBLVGQD&client_secret=MVJZGC3WT4V55DQPJYBFNZ5X3IACIDLFVM1HKA2WBTEHAXDF&v=20130703"; 
     try { 
      if(method == "POST"){ 
       DefaultHttpClient httpClient = new DefaultHttpClient(); 
       httpClient.getParams().setParameter(ClientPNames.COOKIE_POLICY, 
         CookiePolicy.BROWSER_COMPATIBILITY); 
       HttpPost httpPost = new HttpPost(url); 
       httpPost.setEntity(new UrlEncodedFormEntity(params)); 

       HttpResponse httpResponse = httpClient.execute(httpPost); 
       HttpEntity httpEntity = httpResponse.getEntity(); 
       is = httpEntity.getContent(); 

      } else if(method == "GET"){ 
       /* DefaultHttpClient httpClient = new DefaultHttpClient(); 
       String paramString = URLEncodedUtils.format(params, "utf-8"); 
       url += "?" + paramString; 
       HttpGet httpGet = new HttpGet(url); 

       HttpResponse httpResponse = httpClient.execute(httpGet); 
       HttpEntity httpEntity = httpResponse.getEntity(); 
       is = httpEntity.getContent(); 
      } 
     } catch (UnsupportedEncodingException e) { 
      e.printStackTrace(); 
     } catch (ClientProtocolException e) { 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 

     try { 
      BufferedReader reader = new BufferedReader(new InputStreamReader(
        is, "iso-8859-1"), 8); 
      StringBuilder sb = new StringBuilder(); 
      String line = null; 
      while ((line = reader.readLine()) != null) { 
       sb.append(line + "\n"); 
      } 
      is.close(); 
      json = sb.toString(); 
     } catch (Exception e) { 
      Log.e("fail!", "Error convert stream to String: " + e.toString()); 
     } 



     try { 
      Thread.sleep(1000);   
     } catch (InterruptedException e) { 
      e.printStackTrace(); 
     } 

     return json; 


    } 

    protected void onPostExecute(String json) { 
      try { 
       json = doInBackground(url); 
       jObj = new JSONObject(json); 
      } catch (JSONException e) { 
       Log.e("JSON Parser", "Error parsing data " + e.toString()); 
      } 
      try { 

       // récupérer la liste de toutes les venues 

       JSONArray venues = jObj.getJSONObject("response").getJSONArray("venues"); 

       // parcourir toute la liste des venues 
       for(int i = 0; i < venues.length(); i++){ 

       // parcours du tableau de venues 
       JSONObject ven = venues.getJSONObject(i); 

       // stocker chaque item du JSONObject venue dans une variable de type String 
       String id = ven.getString(TAG_ID); 
       String name = ven.getString(TAG_NAME); 


       // récupérer le JSONObject phone qui contient deux items 
       JSONObject location = null; 
       try { 
        location = ven.getJSONObject(TAG_LOCATION); 
       } catch (JSONException e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
       } 
       String address = location.getString(TAG_ADDRESS); 
       String crossStreet= location.getString(TAG_CROSS_STREET); 
       String city= location.getString(TAG_CITY); 
       String state= location.getString(TAG_STATE); 
       String postalCode= location.getString(TAG_POSTAL_CODE); 
       String country= location.getString(TAG_COUNTRY); 
       String lat= location.getString(TAG_LAT); 
       String lng= location.getString(TAG_LNG); 
       String distance= location.getString(TAG_DISTANCE); 



       /*if(jsonObjLoc.has("myAddress")) { // name of field to look for 

         myTextAddress = jsonObjLoc.getString("address"); 
      }*/ 

       // créer une HashMap pour ajouter les informations dans chaque item 
       HashMap<String, String> map = new HashMap<String, String>(); 

       // insérer dans la HashMap les données que l’on veut afficher sous la forme de clé/valeur 
       //map.put(TAG_ID, id); 
       map.put(TAG_NAME, name); 
       map.put(TAG_ADDRESS, address); 
       //map.put(TAG_CITY, city); 
       map.put(TAG_LAT, lat); 
       map.put(TAG_LNG, lng); 
       //map.put(TAG_DISTANCE, distance); 

       // ajouter une HashMap à notre ArrayList 
       venuesList.add(map); 
       } 

       //créer un SimpleAdapter qui se chargera de placer les données dans chaque item de notre listView 
       ListAdapter adapter = 
         new SimpleAdapter(JSonResultActivity.this, venuesList,R.layout.activity_json_result, 
         new String[] { TAG_NAME, TAG_ADDRESS, TAG_LAT, TAG_LNG }, 
         new int[] {R.id.name, R.id.address, R.id.lat, R.id.lng }); 



      // attribuer à notre listView l'adapter que l'on vient de créer 
      setListAdapter(adapter); 
      } 
      catch (JSONException e) 
      { 
      e.printStackTrace(); 
      } 


    } 

} 
} 

도와

감사합니다!

Answer 1

이 추가 .. 매니페스트 파일

StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder() 
      .permitAll().build(); 
StrictMode.setThreadPolicy(policy); 

넣어 이것을

 <uses-permission android:name="android.permission.INTERNET"/> 

[android.os.NetworkOnMainThreadException]의