package org.mercury_im.messenger.ui.chatlist; import static org.mercury_im.messenger.MercuryImApplication.TAG; import android.content.Context; import android.os.Bundle; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import androidx.annotation.NonNull; import androidx.annotation.Nullable; import androidx.fragment.app.Fragment; import androidx.lifecycle.ViewModelProviders; import androidx.recyclerview.widget.RecyclerView; import butterknife.BindView; import butterknife.ButterKnife; import org.mercury_im.messenger.R; public class ChatListFragment extends Fragment { private ChatListViewModel viewModel; @BindView(R.id.chat_list__recycler_view) RecyclerView recyclerView; private final ChatListRecyclerViewAdapter recyclerViewAdapter = new ChatListRecyclerViewAdapter(); public ChatListFragment() { } @Nullable @Override public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_chat_list, container, false); ButterKnife.bind(this, view); recyclerView.setAdapter(recyclerViewAdapter); return view; } @Override public void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); } @Override public void onAttach(Context context) { super.onAttach(context); viewModel = ViewModelProviders.of(getActivity()).get(ChatListViewModel.class); viewModel.getChats().observe(this, chatModels -> { if (chatModels == null) { Log.d(TAG, "Displaying null chats"); return; } Log.d(TAG, "Displaying " + chatModels.size() + " chats"); recyclerViewAdapter.setModels(chatModels); }); } }