I initialize recyclerview using androidannotaions

 @ViewById(R.id.fragment_peoples_recyclerview) RecyclerView recyclerView;

The error itself is such

  java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.RecyclerView.setAdapter(android.support.v7.widget.RecyclerView$Adapter)' on a null object reference

The complete code is

 @EFragment(R.layout.fragment_listview) public class PeopleFragment extends Fragment { @ViewById(R.id.fragment_peoples_recyclerview) RecyclerView recyclerView; private People peoples; private String name; @AfterViews public void ready() { recyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); getAllPeoplesRest(recyclerView); } @Override public void onResume() { super.onResume(); loadRecordings(); } private void loadRecordings() { getLoaderManager().restartLoader(0, null, new LoaderManager.LoaderCallbacks<List<People>>() { @Override public Loader<List<People>> onCreateLoader(int id, Bundle args) { final AsyncTaskLoader<List<People>> loader = new AsyncTaskLoader<List<People>>(getActivity()) { @Override public List<People> loadInBackground() { return People.getAllPeoples(); } }; loader.forceLoad(); return loader; } @Override public void onLoadFinished(Loader<List<People>> loader, List<People> data) { recyclerView.setAdapter(new PeoplesAdapter(data)); } @Override public void onLoaderReset(Loader<List<People>> loader) { } }); } @Background public void getAllPeoplesRest(View v) { if (!NetworkStatusChecker.isNetworkAvailable(getContext())) { Snackbar.make(v, R.string.internet_is_not_found, Snackbar.LENGTH_LONG).show(); return; } RestService restService = new RestService(); ArrayList<PeoplesModel> peoplesModel; try { peoplesModel = restService.getPeoples(); } catch (RetrofitError e) { Snackbar.make(v, R.string.internet_is_not_found, Snackbar.LENGTH_LONG).show(); return; } for (PeoplesModel people : peoplesModel) { peoples = new People(); name = people.getName()+people.getSurName(); peoples.setName(name); if (!peoples.exists()) { peoples.insert(); } else { break; } } } }

    1 answer 1

    The error was in another file, in androidannotations there is such a feature that you must put an underscore after the file name, for example MainActivity_, MyFragment_, etc.