I have been reading the different answers here on stackoverflow and on this blog post and tried to implement their solutions but I am still getting the error:No adapter attached; skipping layout. help me.
[code]package vn.jupviec.frontend.android.monitor.app.ui.candidate; import android.content.Context; import android.support.v7.widget.RecyclerView; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.Toast; import com.fasterxml.jackson.databind.ObjectMapper; import org.w3c.dom.Text; import java.sql.Timestamp; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; import butterknife.BindView; import vn.jupviec.frontend.android.monitor.app.R; import vn.jupviec.frontend.android.monitor.app.domain.candidate.TrainingDTO; import vn.jupviec.frontend.android.monitor.app.util.Utils; /** * Created by Windows 10 Gamer on 16/12/2016. */ public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.RecyclerViewHolder> { private static final String TAG = "RecyclerView"; private List<TrainingDTO> mTrainingDTOs; private Context mContext; private LayoutInflater mLayoutInflater; private String today; private static final DateFormat sdf = new SimpleDateFormat("dd/MM/yyyy"); AdapterInterface buttonListener; public RecyclerAdapter(Context context, List<TrainingDTO> datas, AdapterInterface buttonListener) { mContext = context; mTrainingDTOs = datas; this.mLayoutInflater = LayoutInflater.from(mContext); this.buttonListener = buttonListener; } @Override public RecyclerViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.candidate_item, parent, false); // View itemView = mLayoutInflater.inflate(R.layout.candidate_item, parent, false); return new RecyclerViewHolder(itemView); } @Override public void onBindViewHolder(RecyclerViewHolder holder, int position) { final ObjectMapper mapper = new ObjectMapper(); final TrainingDTO trainingDTO = mapper.convertValue(mTrainingDTOs.get(position), TrainingDTO.class); holder.tvName.setText(trainingDTO.getMaidName()); holder.status.setVisibility(View.GONE); Date date = new Date(); String currentDate = sdf.format(date); for (TrainingDTO.TrainingDetailDto td : trainingDTO.getListTrain()) { today = Utils.formatDate((long) td.getTrainingDate(),"dd/MM/yyyy"); break; } if(currentDate.equals(today)) { holder.status.setVisibility(View.VISIBLE); holder.status.setText("(M?i)"); } holder.btnHistory.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(mContext,R.string.msg_no_candidate_history,Toast.LENGTH_SHORT).show(); } }); holder.btnTest.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { buttonListener.showComment(trainingDTO); } }); } @Override public int getItemCount() { int size ; if(mTrainingDTOs != null && !mTrainingDTOs.isEmpty()) { size = mTrainingDTOs.size(); } else { size = 0; } return size; } class RecyclerViewHolder extends RecyclerView.ViewHolder { private TextView tvName; private Button btnTest; private Button btnHistory; private TextView status; public RecyclerViewHolder(View itemView) { super(itemView); tvName = (TextView) itemView.findViewById(R.id.txtName); btnTest = (Button) itemView.findViewById(R.id.btnTest); btnHistory = (Button) itemView.findViewById(R.id.btnHistory); status = (TextView)itemView.findViewById(R.id.status); } } public boolean removeItem(int position) { if (mTrainingDTOs.size() >= position + 1) { mTrainingDTOs.remove(position); return true; } return false; } public interface AdapterInterface { void showComment(TrainingDTO trainingDTO); void showHistory(TrainingDTO trainingDTO); } } package vn.jupviec.frontend.android.monitor.app.ui.candidate; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.graphics.Color; import android.graphics.drawable.ClipDrawable; import android.graphics.drawable.ShapeDrawable; import android.graphics.drawable.shapes.RoundRectShape; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.util.Log; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.LinearLayout; import android.widget.ProgressBar; import android.widget.RelativeLayout; import android.widget.TextView; import android.widget.Toast; import java.sql.Timestamp; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import butterknife.BindView; import butterknife.ButterKnife; import butterknife.Unbinder; import retrofit.Callback; import retrofit.RetrofitError; import retrofit.client.Response; import vn.jupviec.frontend.android.monitor.app.R; import vn.jupviec.frontend.android.monitor.app.domain.ResultDTO; import vn.jupviec.frontend.android.monitor.app.domain.candidate.TrainingDTO; import vn.jupviec.frontend.android.monitor.app.domain.training.CandidateService; import vn.jupviec.frontend.android.monitor.app.util.Constants; import vn.jupviec.frontend.android.monitor.app.util.Utils; /** * Created by Windows 10 Gamer on 09/12/2016. */ public class FragmentTapNew extends Fragment implements RecyclerAdapter.AdapterInterface { private static final String TAG = FragmentTapNew.class.getSimpleName(); Activity myContext = null; private OnItemSelectedListener listener; ShapeDrawable shapeDrawable; @BindView(R.id.lvToday) RecyclerView lvToday; @BindView(R.id.textView) TextView textView; @BindView(R.id.pb_loading) ProgressBar pbLoading; private Unbinder unbinder; private boolean loading = true; int pastVisiblesItems, visibleItemCount, totalItemCount; ArrayList<TrainingDTO> mTrainingDTO ; RecyclerAdapter mTrainingDTOAdapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View v = inflater.inflate(R.layout.activity_candidate_training, container, false); unbinder = ButterKnife.bind(this, v); initViews(); return v; } private void initViews() { LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity().getApplicationContext()); layoutManager.setOrientation(LinearLayoutManager.VERTICAL); lvToday.setHasFixedSize(true); lvToday.setNestedScrollingEnabled(false); Thread t = new Thread(new Runnable() { @Override public void run() { today(); } }); t.start(); } private boolean isNetworkConnected() { ConnectivityManager cm = (ConnectivityManager) getActivity().getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo ni = cm.getActiveNetworkInfo(); if (ni == null) { Toast.makeText(getActivity(), R.string.err_cannot_establish_connection, Toast.LENGTH_SHORT).show(); return false; } else return true; } private void today() { if(isNetworkConnected()){ String token = "a"; Integer date = 0; setLoadingVisible(true); CandidateService.getApiDummyClient(getContext()).getCandidate( token, date, Constants.TRAINING, Arrays.asList(Constants.TRAINING_DAY_NEW), new Callback<ResultDTO>() { @Override public void success(ResultDTO resultDTO, Response response) { setLoadingVisible(false); mTrainingDTO = (ArrayList<TrainingDTO>) resultDTO.getData(); if (mTrainingDTO.size() == 0) { if(textView!=null) { textView.setVisibility(View.VISIBLE); textView.setTextColor(Color.RED); textView.setGravity(Gravity.CENTER | Gravity.BOTTOM); } } else { if(textView!=null) { textView.setVisibility(View.GONE); } if(null==mTrainingDTOAdapter) { mTrainingDTOAdapter = new RecyclerAdapter(getActivity(), mTrainingDTO, FragmentTapNew.this); lvToday.setAdapter(mTrainingDTOAdapter); } else { lvToday.setAdapter(mTrainingDTOAdapter); mTrainingDTOAdapter.notifyDataSetChanged(); } lvToday.invalidate(); } } @Override public void failure(RetrofitError error) { Log.e(TAG, "JV-ERROR: " + error.getMessage()); Log.e(TAG, "JV-ERROR: " + error.getSuccessType()); } }); } } @Override public void onResume() { setLoadingVisible(false); initViews(); lvToday.setAdapter(mTrainingDTOAdapter); super.onResume(); } @Override public void onDestroyView() { super.onDestroyView(); unbinder.unbind(); } private void setLoadingVisible(boolean visible) { // pbLoading.getIndeterminateDrawable().setColorFilter(0xFFFF0000, android.graphics.PorterDuff.Mode.MULTIPLY); if(pbLoading!=null) { pbLoading.setVisibility(visible ? View.VISIBLE : View.GONE); lvToday.setVisibility(visible ? View.GONE : View.VISIBLE); } } @Override public void onAttach(Activity activity) { super.onAttach(activity); if (activity instanceof OnItemSelectedListener) { listener = (OnItemSelectedListener) activity; } else { throw new ClassCastException(activity.toString() + " ph?i implemenet MyListFragment.OnItemSelectedListener"); } } @Override public void onDetach() { super.onDetach(); listener = null; } @Override public void showComment(TrainingDTO trainingDTO) { Intent intent = new Intent(getContext(), CommentActivity.class); intent.putExtra(Constants.ARG_NAME_DETAIL, trainingDTO); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); getContext().startActivity(intent); } @Override public void showHistory(TrainingDTO trainingDTO) { Intent intent = new Intent(getContext(), HistoryActivity.class); intent.putExtra(Constants.ARG_CANDIDATE_HISTORY_DETAIL, trainingDTO); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); getContext().startActivity(intent); } public interface OnItemSelectedListener { void showComment(TrainingDTO trainingDTO); void showHistory(TrainingDTO trainingDTO); } }[/code] Small Bio