rogerhu

public abstract class EndlessRecyclerViewScrollListener extends RecyclerView.OnScrollListener {
    // The minimum amount of items to have below your current scroll position
    // before loading more.
    private int visibleThreshold = 5;
    // The current offset index of data you have loaded
    private int currentPage = 0;
    // The total number of items in the dataset after the last load
    private int previousTotalItemCount = 0;
    // True if we are still waiting for the last set of data to load.
    private boolean loading = true;

LarsWerkman

public class Main extends Activity implements OnColorChangedListener {

  private ColorPicker picker;
	private SVBar svBar;
	private OpacityBar opacityBar;
	private Button button;
	private TextView text;

	@Override
	protected void onCreate(Bundle savedInstanceState) {