react-native
React Native FlatList rendering issue
VirtualizedList.*never.*render|FlatList.*content.*blank|ScrollView.*performance
Fixes
- 1.Add keyExtractor prop and ensure it returns unique stable strings
- 2.Set getItemLayout for fixed-height items to skip measurement
- 3.Use windowSize, maxToRenderPerBatch, and removeClippedSubviews for large lists
react-nativeflatlistperformance
Related Errors
react-native3 fixes
Metro bundler crash or port conflict
Metro.*error|metro bundler.*crashed|EADDRINUSE.*8081
- •Kill existing Metro process: npx kill-port 8081
- •Clear Metro cache: npx react-native start --reset-cache
react-native3 fixes
React Native native module not found
Native module.*cannot be null|TurboModuleRegistry.*not found|NativeModules.*undefined
- •Run npx pod-install (iOS) or rebuild the project after adding native deps
- •For New Architecture, ensure the module implements TurboModule interface
react-native3 fixes
React Native Android Gradle build failure
Gradle.*BUILD FAILED|execution failed for task.*:app:
- •Run cd android && ./gradlew clean then rebuild
- •Check android/gradle.properties for JVM memory: org.gradle.jvmargs=-Xmx4g