React Native Flatlist Explained Performance PZWjBHuGwco

Web Reference: By passing extraData={selectedId} to FlatList we make sure FlatList itself will re-render when the state changes. Without setting this prop, FlatList would not know it needs to re-render any items because it is a PureComponent and the prop comparison will not show any changes. 📌 In this video, we’ll dive into the FlatList component in React Native — the go-to tool for rendering large lists efficiently. You’ll also learn powerful performance optimization ... Aug 10, 2025 · Practical techniques and configuration tweaks to optimize FlatList for better performance. Let’s start by building a basic, unoptimized list that simulates a non-paginated API response.

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