Linking native libraries in React Native - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does "linking native libraries" mean in React Native?

It means connecting native code libraries (like iOS or Android code) to your React Native app so you can use native features not available in JavaScript alone.

beginner

How do you link native libraries automatically in React Native 0.60+?

React Native 0.60 and above uses auto-linking, which means native libraries are linked automatically when you install them with npm or yarn.

intermediate

What command do you run to manually link native libraries in older React Native versions?

You run the command npx react-native link to link native libraries manually.

intermediate

Why might you need to link native libraries manually even with auto-linking?

Sometimes auto-linking fails or a library requires extra setup steps, so you need to link manually or adjust native project files yourself.

advanced

What files are commonly modified when linking native libraries on iOS and Android?

On iOS, you often modify Podfile and run pod install. On Android, you update settings.gradle, build.gradle, and sometimes MainApplication.java.

What is the main purpose of linking native libraries in React Native?

A To update JavaScript code automatically

B To connect native code so React Native can use native features

C To install npm packages

D To create UI components

Linking native libraries connects native code to React Native so you can use native device features.

Which React Native version introduced auto-linking for native libraries?

A 0.60

B 0.59

C 0.58

D 0.61

React Native 0.60 introduced auto-linking to simplify native library integration.

Which command is used to manually link native libraries in React Native?

A pod install

B react-native start

C npm install

D npx react-native link

The command npx react-native link manually links native libraries.

What tool do you use on iOS to install native dependencies after linking?

A CocoaPods

B Xcode

C Gradle

D npm

CocoaPods manages iOS native dependencies and you run pod install after linking.

If auto-linking fails, what might you need to do?

A Reinstall Node.js

B Run npm audit

C Manually link the native library and update native files

D Delete the app

Manual linking and native file updates fix issues when auto-linking does not work.

Explain the process of linking a native library in React Native 0.60 or later.

Think about what happens after you add a native library package.

Describe why linking native libraries is important for React Native apps.

Consider what React Native cannot do without native code.