AsyncTask를 사용할 때 ComponentName 생성자가 정의되지 않았습니다.

Question

일부 네트워크 호출을 수행하는 위젯을 만들고 있습니다. 나는 비동기 작업을 사용하고 있습니다. 하지만 내의 onUpdate()에서 ComponentName 객체가 제공하는 컴파일러 오류 다음, 생성되지 않는 :

1)The constructor ComponentName(ListViewWidget,Class<ListViewWidget>) is undefined. 
2)The method getInstance(context) in the type AppWidgetManager is not applicable for the arguments(ListViewWidget) 

//ListViewWidget.java

public class ListViewWidget extends AppWidgetProvider{ 

    private static String text=null; 
    @Override 
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, 
      int[] appWidgetIds) { 

     super.onUpdate(context, appWidgetManager, appWidgetIds); 
     RemoteViews updateViews = new RemoteViews(context.getPackageName(), R.layout.list_layout); 
     FetchTask fetchTask=new FetchTask(context); 

      //compiler error in the following 2 lines 
      ComponentName thisWidget = new ComponentName(this, ListViewWidget.class); 
     AppWidgetManager manager = AppWidgetManager.getInstance(this); 

     manager.updateAppWidget(thisWidget, updateViews); 

     fetchTask.execute(); 


    } 
    public static class FetchTask extends AsyncTask<URL,Integer,String>{ 

     private Context context; 
     public FetchTask(Context context){ 
      this.context=context; 
     } 

     @Override 
     protected String doInBackground(URL... arg0) { 


      HttpHeaders headers = new HttpHeaders(); 
      headers.add(Constants.ACCEPT_HEADER, Constants.JSON_MIME_TYPE); 
      headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED); 
      headers.add(Constants.AUTHORIZATION_HEADER, "Basic ZDNhYWNmNDUwZGQ2YWE5OTJjZmJhNzcwNjc1NjA3MzM6N2NlYmJhMWJmMTRjYjg1OA=="); 

      DefaultHttpClient client = new DefaultHttpClient(); 
      HttpGet get = new HttpGet("https://api.paypal.com/v1/stores?view=local&lat=37.3756096&lng=-121.9239449&radius=50&count=20&start_id=1&country_code=US"); 
      //("http://search.twitter.com/search.json?q=twitter"); 
      BasicResponseHandler handler = new BasicResponseHandler(); 
      String response = null; 

      Date d=null; 
      //SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context); 
      try{ 

       response = client.execute(get,handler); 
       Log.i("TagAkshita","Response-"+response); 
       if(response!=null){ 
        JSONObject object = new JSONObject(response); 
        JSONArray array = object.getJSONArray("results"); 
        if(array.length()>0){ 
         JSONObject list = array.getJSONObject(0); 
         text = list.getString("view"); 
         Log.i("Stores:","textval"+text); 

        } 
       } 
      } 
      catch(Exception e){ 
       e.printStackTrace(); 
      } 

      return text; 
     } 

     protected void onPostExecute(RemoteViews updateViews,Context context) { 
      // TODO Auto-generated method stub 
      Intent intent=new Intent("android.appwidget.action.APPWIDGET_UPDATE"); 

      PendingIntent pendingIntent=PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT); 
      updateViews.setTextViewText(R.id.text_view, text); 
      updateViews.setOnClickPendingIntent(R.id.next, pendingIntent); 


     }  
    } 
} 

Answer 1

ComponentName는 매개 변수로 상황을합니다. this으로 전달하는 것은 ListViewWidget입니다.

이

ComponentName thisWidget = new ComponentName(context, ListViewWidget.class);