React-native Daily Updates

React Native Re-renders Explained (2025 Guide) 🔍 React Native Re-renders Explained (2025 Guide) Struggling with laggy UI or unexpected behavior? You might be battling unnecessary component re-renders . In this guide, we’ll break down: 🔁 What triggers re-renders in React Native 🧠 How to analyze them 🛠️ Tools & techniques to prevent them 🎯 What Causes a Re-render? Every time a component’s props or state changes, React re-renders it (and possibly its children). const MyComponent = ({ count }) => { console.log("Rendered!"); return <Text>Count: {count}</Text>; }; If count changes, the component rerenders. ⚠️ Common Re-render Triggers Trigger Description New props Parent passes a new prop (even if value is the same) State update useState setter or useReducer dispatch Context update Any context change...

🚀 Why State Management Matters in 2025 Apps are getting richer and more dynamic. Good state management keeps your app fast, predictable, and a joy to maintain. Whether you’re building a chat app, e-commerce platform, or social media tool — state is at the heart of your app . 🔰 Starting Simple: useState and useReducer useState Example: import { useState } from 'react'; export default function Counter() { const [count, setCount] = useState(0); return ( <Button title={`Count: ${count}`} onPress={() => setCount(count + 1)} /> ); } When to move to useReducer? If your state logic becomes complex (like a form with many fields), useReducer gives you better structure. const initialState = { count: 0 }; function reducer(state, action) { switch (action.type) { case 'increment': return { count: state.count + 1 }; default: throw new Error(); } } const [state, dispatch] = useReducer(reducer, initialState); ...

Optimizing React Native Apps for Play Store and App Store Size Limits (2025 Guide) 🎯 Why App Size Still Matters in 2025 Even with high-speed internet everywhere, users still hesitate when they see a 50MB+ download. Google Play and Apple’s App Store rank smaller apps higher (better install conversion!). Plus, quicker downloads = better retention = more ⭐⭐⭐⭐⭐ ratings. In short: Smaller = Faster = More Successful . 🔥 Quick Wins (First 5 Things You Should Always Do) Enable Hermes Engine Hermes drastically reduces app size and improves performance. ✅ In React Native 0.73+ and Expo SDK 53+, Hermes is enabled by default. Compress and Optimize Assets Use .webp instead of .png/.jpg where possible. Tools like Squoosh make compression easy. ✅ Expo automatically optimizes assets during eas build . Proguard & R8 for Android Shrink, obfuscate, and optimize Java/Kotlin code. ...

Introduction React Native is awesome for building cross-platform apps fast — but sometimes, things get slow, janky, or downright painful. 🥲 I’ve worked on apps with thousands of daily users, and I’ve seen firsthand how small mistakes can cause BIG performance issues. In this blog, I’ll walk you through exactly how I debug slow performance in React Native apps — using real-world examples and tools that actually work. ✅ Common causes of performance issues ✅ Step-by-step debugging checklist ✅ Tools I use (and why!) ✅ Quick wins vs deeper fixes 🚨 Common Causes of Slow Performance Before you debug, it's crucial to know the typical culprits: 💥 Over-rendering: Components re-render too often. 💥 Expensive renders: Heavy components (big lists, images) choking the JS thread. 💥 JS thread blocking: Long functions or animations freezing the UI. 💥 Memory leaks: Listeners or timers not cleaned up, slowing the app over time. 💥 Unoptimized lists: FlatList or ScrollView...

Intro Starting from 2024-25, Android apps are expected to embrace edge-to-edge UI — where your app content flows behind the system bars (status bar, navigation bar) for a fully immersive experience. Google is pushing for it hard, and React Native (especially with New Architecture and Expo SDK 53+) has made it much easier to implement. In this blog, I’ll walk you through: ✅ Why edge-to-edge matters for modern Android apps ✅ How to implement it correctly in React Native (Expo & Bare projects) ✅ Handling tricky parts like keyboard, gestures, and safe areas ✅ Real-world gotchas I ran into — and how to fix them Why Edge-to-Edge? Modern Android design guidelines (Material You) heavily prefer edge-to-edge layouts. It makes apps feel more native, more immersive, and makes better use of larger phone screens. Plus, starting Android 15, apps that don't adopt it might feel noticeably "outdated". How to Do It in React Native 🚀 ...

Intro React Native’s New Architecture — featuring Fabric, TurboModules, and the Codegen system — has officially moved past the “experimental” tag. With Expo SDK 53+ adopting it by default and major libraries like react-native-reanimated , react-native-gesture-handler , and @stripe/stripe-react-native now supporting it, 2025 is the year to take it seriously. But what does it really offer in practice? And how do you migrate smoothly? In this blog, I’ll break down: What the New Architecture actually brings to the table Real-world performance & developer experience gains Migration tips (with Expo & bare React Native workflows) Gotchas and stability issues I’ve personally faced — and how I fixed them What Is the New Architecture? The New Architecture in React Native introduces: Fabric: A new rendering system, enabling asynchronous and concurrent rendering. TurboModules: Faster and more efficient native modul...

New Release: Expo SDK 53 Beta Now Available for Developers Here are the key highlights from the Expo SDK 53 release notes that are particularly relevant for your interest in performance improvements, new features, and support for various modules: 🚀 Performance & Architecture 1. New Architecture is Now Default All new projects ( npx create-expo-app ) will now use the New Architecture by default. This includes Hermes , Fabric , and TurboModules for both iOS and Android. You can still disable the new architecture by setting EXPO_ENABLE_NEW_ARCHITECTURE=false . 2. Startup Time Improvements Thanks to the New Architecture and general optimizations, startup performance has improved. Support for React Native 0.73 , bringing improved performance, bug fixes, and updated UI features.