Исмаил

@Override
    public void onAttach(final Context context) {
        super.onAttach ( context );

        new MainFragment.mDgu (context).execute();


    }

class mDgu extends AsyncTask<String, String, String> {
        ArrayList<Map<String, Object>> mData;
        private Context mActivity;

        public mDgu(Context context){
            mActivity = context;
        }

        @Override
        protected String doInBackground(String... arg) {
            ...
                }

            } catch (IOException e) {
                e.printStackTrace ();
            }
            return null;
        }

        @Override
        protected void onPostExecute(String result) {
            mmSimpleAdapter = new SimpleAdapter ( mActivity, mData, R.layout.item_news, from, to );
            mSimpleDgu.setAdapter ( mmSimpleAdapter );
        }
    }