Steps to Build Offline APK for Real Device – React Native

To test our React Native App in our phone, we can follow the following steps.

STEP 1 : Generate JS Bundle

npx 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

Run the above command in your project root folder. This will pack your code into a static file.

STEP 2: Build the APK

navigate to android folder using this command in terminal.

cd android

Now build a debug APK using gradle

./gradlew assembleDebug

Now you can find the APK file in the following path

android/app/build/outputs/apk/debug/app-debug.apk

Now we can install this APK in our Android phone to test our App.