PreLoadLayoutManager.java

public class PreLoadLayoutManager extends LinearLayoutManager {

    private final int mDisplayHeight;

    public PreLoadLayoutManager(Context context) {
        super(context);
        mDisplayHeight = context.getResources().getDisplayMetrics().heightPixels;
    }

    @Override
    protected int getExtraLayoutSpace(RecyclerView.State state) {
        return mDisplayHeight;
    }
}