dejandobnikar

    private void initForViewPager() {
        viewPager.addOnPageChangeListener(new OnPageChangeListener() {
          
            @Override public void onPageSelected(int position) {
                // check if new data should be loaded
            }
            
        });
    }
    

dejandobnikar

    private void onPositionAttached(int position) {
        
        // track positions, on scroll up do nothing.
        if (position < lastAttachedItem) {
            return;
        }

        // do nothing if all the data already loaded.
        if (completed) {
            return;

dejandobnikar

    private void initRecyclerView() {
        recyclerView.addOnChildAttachStateChangeListener(new OnChildAttachStateChangeListener() {
            
            @Override public void onChildViewAttachedToWindow(View view) {
                int position = layoutManager.findLastVisibleItemPosition();
                onPositionAttached(position);
            }

        });
    }

dejandobnikar

public final class DataProvider {

    private static final Gson GSON = new Gson();

    public static ReviewResponse loadPage(int page) {

        switch (page) {
            case 1:
                return getFirstPage();
            case 2:

dejandobnikar

public class Review {

    private long id;
    private String title;
    private String content;
    private String author;

    public long getId() {
        return id;
    }

dejandobnikar

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MainActivity";

    private RecyclerView recyclerView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

dejandobnikar

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.RecyclerView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/recycler_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />