create apk debug react native code example

Example 1: react native debug apk

cd android && gradlew clean && cd ..
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 
(or you can use for release: gradlew assembleRelease)
cd android && gradlew clean && gradlew assembleRelease

Example 2: build apk react native

$ keytool -genkeypair -v -keystore my-upload-key.keystore -alias my-key-alias -keyalg RSA -keysize 2048 -validity 10000