Answers for "how to create a build in react native"

react native build

cd android
./gradlew bundleRelease

react-native android build apk

cd android
./gradlew assembleRelease

react native build

debug build

yarn 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

how to make apk in android studio reac native

$ keytool -genkey -v -keystore my-release-key.keystore -alias my-key-alias -keyalg RSA -keysize 2048 -validity 10000