Endless Scrolling with AdapterViews and RecyclerViews

gistfile1.java

// Instead of using [Endless Scrolling with AdapterViews and RecyclerViews]
// (https://github.com/codepath/android_guides/wiki/Endless-Scrolling-with-AdapterViews-and-RecyclerView/_edit) 
// introduced in codepath.
// There's more simple and less computational way to implement endless scrolling. You can replace 1 in if-statement 
// if(position == getItemCount() - 1) for fine tuning.
// Make use of the following code snippet in your project.

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
  EndlessScrollListener endlessScrollListener
  
  ...
  public void setEndlessScrollListener(EndlessScrollListener endlessScrollListener) {
      this.endlessScrollListener = endlessScrollListener;
  }
  
  @Override
  public void onBindViewHolder(MyAdapter.ViewHolder holder, int position) {
      final Data data = dataset.get(position);

      // you can cache getItemCount() in a member variable for more performance tuning
      if(position == getItemCount() - 1) {  
          if(endlessScrollListener != null) {
              endlessScrollListener.onLoadMore(position);
          }
      }

      ...
  }
  
  @Override
  public int getItemCount() {
      if(dataset == null)
          return 0;
      else
          return dataset.size();
  }
  
  ...
  
  public interface EndlessScrollListener {
      /**
       * Loads more data.
       * @param position
       * @return true loads data actually, false otherwise.
       */
      boolean onLoadMore(int position);
  }
}