private void init() {
        setOrientation(VERTICAL);
        final ContextThemeWrapper ctw = new ContextThemeWrapper(getContext(), R.style.cgeo);
        inflate(ctw, R.layout.itemrangeslider_view, this);
        binding = ItemrangesliderViewBinding.bind(this);
        setScale(null, null, null);
    }
View displays and maintains a slider where user can select single or range of items from a sorted item list.
main/src/main/java/cgeo/geocaching/ui/ItemRangeSlider.java