# 3.2 ListView Performance ### Performance with ListView With a list view, as a cell is “pushed” off the screen due to scrolling, that cell or `View` object is moved into a `Recycler` (not to be confused with `RecyclerView`) and the same `View` object is **reused** by the system. ![Diagram of how cells are recycled](https://i.stack.imgur.com/VLG9g.jpg) If we look at the diagram above, when `Item 1` is pushed offscreen, it is saved in the `Recycler` and the `View` object is reused for `Item 8`. This can lead to all sorts of bugs. Let’s say, for example, that every item had a checkbox. If the checkbox in `Item 1` is checked, when the `Item 1`'s cell is reused, we’ll see that `Item 8` is created with the checkbox already checked. The text in `Item 8` has changed, but the `View` object itself has been reused. This is because the `View` objects in a list view are not attached to a certain position or item in the list. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://android-course.cornellappdev.com/archive/archived-native-android-textbook-pages/5.-listviews/5.2-listview-performance.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.