You already know how to show a simple scrolling list. But modern apps often need more — think of a photo gallery, a shopping catalogue, or a news feed where cards arrange themselves in rows and columns. In this chapter, you’ll learn how to turn a list into a grid, and add small touches that make an app feel polished: a button that hides when you scroll, a quick undo message, and a screen that stays in one orientation. These are the details users notice without thinking, and they turn a working app into a delightful one.