Answers for "how to generate apk file of a react native app"

react native android build apk

For apk : cd android && ./gradlew assembleRelease
For aab : cd android && ./gradlew bundleRelease

react native build apk

'
For apk : cd android && ./gradlew assembleRelease
For aab : cd android && ./gradlew bundleRelease
,

build apk react native

After run this in cmd

react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res/

cd android && ./gradlew assembleDebug

then you can get apk app/build/outputs/apk/debug/app-debug.apk

react-native android build apk

cd android
./gradlew assembleRelease

create apk react native

cd android 
./gradlew assemble 

</----if this error shows up 

 Could not open settings generic class cache for settings file 
 > BUG! exception in phase 'semantic analysis' in source unit '_BuildScript_' Unsupported class file major version 60
Change Java version to the 8 or 11 and execute ./gradlew assembleRelease

-----/>

java -version
/usr/libexec/java_home -v 1.8.0_311 --exec javac -version