Using Component Libraries in React Native

Why it exists

Building a UI that feels truly "native" on both iOS and Android is complex. Every component—buttons, inputs, menus—needs platform-specific styling, animations, and accessibility features. Implementing and maintaining this from scratch for every project is time-consuming and error-prone.

The mental model

Think of a component library as a box of high-quality, pre-fabricated parts for your app's interface. Instead of being a carpenter who cuts and shapes every piece of wood, you're an assembler. You pick the right pre-made button, input field, or card, and connect it to your app's logic. This lets you focus on what your app does, not how to draw a button with the correct shadow and ripple effect.

How it works

Libraries like React Native Paper provide a set of components that you import and use instead of React Native's basic building blocks. For example, instead of composing a TouchableOpacity and Text with custom styles to make a button, you just import and use a <Button> component. The library handles the complex parts: it renders the correct visual style based on a theme (like Material Design), adds platform-appropriate touch feedback, and ensures it's accessible. Theming support allows you to customize colors and typography globally to match your brand.

When to use it

Use a component library when you need to build an app quickly, want a consistent look based on a standard design system (like Google's Material Design), and don't have a team to build a custom component suite. It's ideal for startups, internal tools, and projects where speed and consistency are prioritized over a completely unique design.

When not to use it

Avoid a pre-built library if your app requires a highly bespoke visual identity that doesn't align with any existing design system. If your UI kit is fundamentally different from a library's standard, you'll spend more time fighting its styles and behaviors than you would building your own components from scratch.

One canonical example

Creating a button from scratch in React Native requires combining a touchable component with a text component and applying multiple styles. With a library like React Native Paper, the code is simplified to a single line: <Button mode="contained" onPress={handlePress}>Press me</Button>. This one component encapsulates styling, accessibility, and platform-specific interaction animations that would otherwise take significant effort to implement manually.