Junior — Middle
How does RecyclerView handle and display a list of 100 items?
sobes.tech AI
Answer from AI
RecyclerView efficiently displays a large list of items (for example, 100) by using the ViewHolder reuse mechanism. Instead of creating 100 separate Views for each item, RecyclerView creates only as many Views as fit on the screen, plus a small buffer for smooth scrolling.
When the user scrolls the list, RecyclerView reuses already created ViewHolders, updating their content for new data. This significantly reduces memory load and improves performance.
The process roughly looks like this:
- A limited number of ViewHolders are created (for example, 10-15, depending on the screen size).
- When scrolling, items that go out of view are placed in a pool for reuse.
- For new visible items, a ViewHolder is taken from the pool and its content is updated.
Thus, RecyclerView provides smooth and efficient handling of large lists.