RecyclerView Loadmore

activity_layout

<?xml version="1.0" encoding="utf-8"?> 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 

 android:layout_width="match_parent" 

 android:layout_height="match_parent" 

 android:fitsSystemWindows="true" 

 android:orientation="vertical">

    <android.support.v7.widget.RecyclerView 

 android:id="@+id/my_recycler_view" 

 android:layout_width="match_parent" 

 android:layout_height="0dp" 

 android:layout_margin="5dp" 

 android:layout_weight="1" 

 android:scrollbars="vertical" />


    <TextView 

 android:id="@+id/empty_view" 

 android:layout_width="match_parent" 

 android:layout_height="match_parent" 

 android:gravity="center" 

 android:text="No Records" 

 android:visibility="gone" />


</LinearLayout>

list_row

<?xml version="1.0" encoding="utf-8"?> 

<android.support.v7.widget.CardView  

xmlns:android="http://schemas.android.com/apk/res/android" 

 xmlns:card_view="http://schemas.android.com/apk/res-auto" 

 android:layout_width="match_parent" 

 android:layout_height="wrap_content" 

 android:orientation="horizontal"     

card_view:cardCornerRadius="5dp" 

 card_view:cardUseCompatPadding="true">

    <RelativeLayout 

 android:layout_width="match_parent" 

 android:layout_height="match_parent" 

 android:background="?android:selectableItemBackground">

        <TextView 

 android:id="@+id/tvName" 

 android:layout_width="match_parent" 

 android:layout_height="wrap_content" 

 android:layout_margin="5dp" 

 android:text="Name" 

 android:textColor="@android:color/black" 

 android:textSize="18sp" />

        <TextView 

 android:id="@+id/tvEmailId" 

 android:layout_width="match_parent" 

 android:layout_height="wrap_content" 

 android:layout_below="@+id/tvName" 

 android:layout_margin="5dp" 

 android:text="Email Id" 

 android:textColor="@android:color/black" 

 android:textSize="12sp" />
    </RelativeLayout>

</android.support.v7.widget.CardView>

progressbar_item

<?xml version="1.0" encoding="utf-8"?> 

<LinearLayout 

 xmlns:android="http://schemas.android.com/apk/res/android"     

android:layout_width="match_parent" 

 android:layout_height="match_parent" 

 android:orientation="vertical" >

    <ProgressBar 

 android:id="@+id/progressBar1" 

 android:layout_width="wrap_content" 

 android:layout_gravity="center_horizontal" 

 android:layout_height="wrap_content" />

</LinearLayout> 

OnLoadMoreListener

public interface OnLoadMoreListener {
    void onLoadMore();
}
 

DataAdapter

public class DataAdapter extends RecyclerView.Adapter {
    private final int VIEW_ITEM = 1;
    private final int VIEW_PROG = 0;

    private List<Student> studentList;

    // The minimum amount of items to have below your current scroll position 

 // before loading more. 

 private int visibleThreshold = 5;
    private int lastVisibleItem, totalItemCount;
    private boolean loading;
    private OnLoadMoreListener onLoadMoreListener;


    public DataAdapter(List<Student> students, RecyclerView recyclerView) {
        studentList = students;
        if (recyclerView.getLayoutManager() instanceof LinearLayoutManager) {
            final LinearLayoutManager linearLayoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
            recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
                @Override 

 public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                    super.onScrolled(recyclerView, dx, dy);

                    totalItemCount = linearLayoutManager.getItemCount();
                    lastVisibleItem = linearLayoutManager 

 .findLastVisibleItemPosition();
                    if (!loading && totalItemCount <= (lastVisibleItem + visibleThreshold)) {
                        // End has been reached 

 // Do something                        if (onLoadMoreListener != null) {
                            onLoadMoreListener.onLoadMore();
                        }
                        loading = true;
                    }
                }
            });
        }
    }

    @Override 

 public int getItemViewType(int position) {
        return studentList.get(position) != null ? VIEW_ITEM : VIEW_PROG;
    }

    @Override 

 public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        RecyclerView.ViewHolder vh;
        if (viewType == VIEW_ITEM) {
            View v = LayoutInflater.from(parent.getContext()).inflate(
                    R.layout.list_row, parent, false);
            vh = new StudentViewHolder(v);
        } else {
            View v = LayoutInflater.from(parent.getContext()).inflate(
                    R.layout.progress_item, parent, false);
            vh = new ProgressViewHolder(v);
        }
        return vh;
    }

    @Override 

 public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        if (holder instanceof StudentViewHolder) {
            Student singleStudent = (Student) studentList.get(position);
            ((StudentViewHolder) holder).tvName.setText(singleStudent.getName());
            ((StudentViewHolder) holder).tvEmailId.setText(singleStudent.getEmailId());
            ((StudentViewHolder) holder).student = singleStudent;
        } else {
            if (((ProgressViewHolder) holder).progressBar != null)
                ((ProgressViewHolder) holder).progressBar.setIndeterminate(true);
        }
    }

    public void setLoaded() {
        loading = false;
    }

    @Override 

 public int getItemCount() {
        return studentList.size();
    }

    public void setOnLoadMoreListener(OnLoadMoreListener onLoadMoreListener) {
        this.onLoadMoreListener = onLoadMoreListener;
    }

    public static class StudentViewHolder extends RecyclerView.ViewHolder {
        public TextView tvName;
        public TextView tvEmailId;
        public Student student;

        public StudentViewHolder(View v) {
            super(v);
            tvName = (TextView) v.findViewById(R.id.tvName);
            tvEmailId = (TextView) v.findViewById(R.id.tvEmailId);
            v.setOnClickListener(new OnClickListener() {
                @Override 

 public void onClick(View v) {
                    Toast.makeText(v.getContext(),
                            "OnClick :" + student.getName() + " \n " + student.getEmailId(),
                            Toast.LENGTH_SHORT).show();
                }
            });
        }
    }

    public static class ProgressViewHolder extends RecyclerView.ViewHolder {
        public ProgressBar progressBar;

        public ProgressViewHolder(View v) {
            super(v);
            progressBar = (ProgressBar) v.findViewById(R.id.progressBar1);
        }
    }
}

 
MainActivity

public class MainActivity extends AppCompatActivity {
    private TextView tvEmptyView;
    private RecyclerView mRecyclerView;
    private DataAdapter mAdapter;
    private LinearLayoutManager mLayoutManager;
    private List<Student> studentList;
    protected Handler handler;

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tvEmptyView = (TextView) findViewById(R.id.empty_view);
        mRecyclerView = (RecyclerView) findViewById(R.id.my_recycler_view);
        studentList = new ArrayList<Student>();
        handler = new Handler();
        loadData();
        mRecyclerView.setHasFixedSize(true);
        mLayoutManager = new LinearLayoutManager(this);
        mRecyclerView.setLayoutManager(mLayoutManager);
        mAdapter = new DataAdapter(studentList, mRecyclerView);
        mRecyclerView.setAdapter(mAdapter);
        if (studentList.isEmpty()) {
            mRecyclerView.setVisibility(View.GONE);
            tvEmptyView.setVisibility(View.VISIBLE);
        } else {
            mRecyclerView.setVisibility(View.VISIBLE);
            tvEmptyView.setVisibility(View.GONE);
        }
        mAdapter.setOnLoadMoreListener(new OnLoadMoreListener() {
            @Override            public void onLoadMore() {
                studentList.add(null);
                mAdapter.notifyItemInserted(studentList.size() - 1);
                handler.postDelayed(new Runnable() {
                    @Override                    public void run() {
                        studentList.remove(studentList.size() - 1);
                        mAdapter.notifyItemRemoved(studentList.size());
                        int start = studentList.size();
                        int end = start + 20;
                        for (int i = start + 1; i <= end; i++) {
                            studentList.add(new Student("Student " + i, "AndroidStudent" + i + "@gmail.com"));
                            mAdapter.notifyItemInserted(studentList.size());
                        }
                        mAdapter.setLoaded();
                    }
                }, 2000);
            }
        });
    }
    private void loadData() {
        for (int i = 1; i <= 20; i++) {
            studentList.add(new Student("Student " + i, "androidstudent" + i + "@gmail.com"));
        }
    }
}