101 posts tagged with "React Native"

Older Android phones expose every expensive choice in a React Native app: heavy startup work, oversized images, slow lists, chatty network calls, JS-thread animations, and debug-only assumptions. The goal is not to chase one magic setting. The goal is to measure on real hardware, reduce work on the critical path, and ship a release build that keeps memory, CPU, and frame time under control.

React Native upgrades are safest when you treat them as a controlled migration, not a package bump. The work spans JavaScript dependencies, native iOS and Android project files, Expo modules, build tooling, runtime versions, and QA. This guide gives you an evergreen upgrade path that works for bare React Native apps, Expo apps, and production templates.

Most production React Native apps talk to at least one REST API: auth, profiles, feeds, search, orders, payments, media, notifications, analytics, or admin workflows. The important decision is not whether you use Fetch or Axios. The important decision is whether every request goes through a typed, observable, cancellable, and secure API layer.

Memory leaks in React Native usually come from resources that outlive the screen that created them: timers, subscriptions, unresolved requests, sockets, navigation listeners, heavy lists, image caches, and native module handles. The fix is not a single package. It is a repeatable loop: reproduce the leak, profile it in a realistic build, remove the retained reference, and verify that memory returns to a stable baseline.

FlatList is fast when each row is cheap, keys are stable, virtualization is tuned for the screen, and the data layer avoids unnecessary re-renders. It becomes slow when rows contain heavy images, anonymous render functions, unstable item references, eager API calls, and too many mounted views. This guide focuses on practical fixes you can apply to production feeds, chats, catalogs, and marketplace screens.

Continuous integration for React Native should do more than run npm test. A useful pipeline protects every pull request, builds signed release artifacts from clean commits, keeps secrets out of the repository, and makes app store submission repeatable.

Windows is a solid development environment for React Native Android apps. The important part is to install the native Android toolchain cleanly, keep Node and Java aligned with your app's React Native version, and use project-local commands instead of old global CLIs.

This guide focuses on Android development from Windows. Building and running iOS apps still requires macOS and Xcode.

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React Native developers eventually need a signed Android release build. For Google Play, the normal production artifact is an Android App Bundle (.aab). APKs are still useful for local testing, sideloading, and some distribution workflows, but Google Play release planning should start with the app bundle.

This guide explains the modern release build flow for React Native Android apps.

React Native has become the go-to framework for creating cross-platform mobile applications that feel native on iOS, Android, and even the web. While it's a strong foundation for app development, taking an app from a concept to a visually appealing, smooth, and user-friendly interface can be quite challenging and time-consuming. That is where React Native UI libraries come into their own. These libraries offer developers the pre-built and customizable elements that accelerate the design process and thereby help create amazing apps faster with less effort.

If you are looking for design-kit inspiration and starter screens, see Best Free React Native UI Kits. This article focuses on reusable component libraries and design-system building blocks.