React Native

React Native, Expo, native modules, cross-platform

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Test yourself: Top 30 advanced React Native interview questions →Multiple choice, with the correct answer and why it is correct on every question. Free, no sign-in.

Advanced everything in React Native, page 4

advanced2 min read

Platform.select: Write Once, Adapt Anywhere

Platform.select is a switch statement for your UI, letting you apply styles or components for iOS and Android from one object. It's ideal for tweaking styles in StyleSheet.create or rendering different components. The footgun is forgetting a default key.

advanced2 min read

React Native Modal: Presenting Content Above Other Views

A Modal is a temporary screen takeover, presenting content above your current view. Use it for critical alerts or forms that demand user focus. The main footgun: forgetting onRequestClose disables the Android back button, trapping your user.

advanced2 min read

Adding Native Code to Expo (The Modern 'Eject')

Adding native code to Expo no longer means 'ejecting'. You create a custom development build with your specific native modules. This is for when a library has native code not in the Expo SDK. The footgun is thinking you must abandon Expo's tools and services.

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