RecyclerELE Code Sample Gist

RecyclerMainActivity.java

public class MainActivity extends AppCompatActivity implements LoaderManager.LoaderCallbacks < List < GuardianStory >> {
  /*Adapter for the stories*/
  private RecyclerELEAdapter RAdapter;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_main);
   loaderManager = getLoaderManager();
   //Create RecyclerView
   RecyclerView storyListView = (RecyclerView) findViewById(R.id.stories_list);
   storyListView.setLayoutManager(new LinearLayoutManager(this));
   // Initialize the loading View
   View loadingView = getLayoutInflater().inflate(R.layout.loading_view, storyListView, false);
   // Initialize the error View
   View errorView = getLayoutInflater().inflate(R.layout.error_view, storyListView, false);
   // Initialize the empty View
   // In this case, we’re going to just modify the text in the error_view.xml
   View emptyView = getLayoutInflater().inflate(R.layout.error_view, storyListView, false);
   ((TextView) emptyView.findViewById(R.id.errorHint)).setText(“No Stories available!”);
   stories = new ArrayList < > ();
   // Initialize the guardianStoryAdapter
   GuardianStoryAdapter guardianStoryAdapter = new GuardianStoryAdapter(this, stories);
   // Initialize the RecyclerELE
   RAdapter = new RecyclerELEAdapter(guardianStoryAdapter, emptyView, loadingView, errorView);
   storyListView.setAdapter(RAdapter);
   startLoad();
  }
  private void startLoad() {
   //Create the connectivity Manager and NetworkInfo objects to check for Network connectivity
   ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
   NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
   if (networkInfo  != null && networkInfo.isConnected()) {
    //Initialize the loader. Pass the itn ID constant defined above and pass in null
    loaderManager.initLoader(STORY_LOADER_ID, null, this);
   } else {
    RAdapter.setCurrentView(RecyclerELEAdapter.VIEW_ERROR);
   }
  }
  @Override
  public Loader < List < GuardianStory >> onCreateLoader(int id, Bundle args) {
   RAdapter.setCurrentView(RecyclerELEAdapter.VIEW_LOADING);

  }
  @Override
  public void onLoadFinished(Loader < List < GuardianStory >> loader, List < GuardianStory > guardianStoryList) {
   if (guardianStoryList  != null &&  !guardianStoryList.isEmpty()) {
    stories.addAll(guardianStoryList);
    RAdapter.setCurrentView(RecyclerELEAdapter.VIEW_NORMAL);
    RAdapter.notifyDataSetChanged();
   } else {
    RAdapter.notifyDataSetChanged();
    RAdapter.setCurrentView(RecyclerELEAdapter.VIEW_ERROR);
   }
  }