Change package name for Android in React Native

I’ve renamed the project’ subfolder from: “android/app/src/main/java/MY/APP/OLD_ID/” to: “android/app/src/main/java/MY/APP/NEW_ID/“

Then manually switched the old and new package ids:

In: android/app/src/main/java/MY/APP/NEW_ID/MainActivity.java:

package MY.APP.NEW_ID;

In android/app/src/main/java/MY/APP/NEW_ID/MainApplication.java:

package MY.APP.NEW_ID;

In android/app/src/main/AndroidManifest.xml:

package="MY.APP.NEW_ID"

And in android/app/build.gradle:

applicationId "MY.APP.NEW_ID"

In android/app/BUCK:

android_build_config(
  package="MY.APP.NEW_ID"
)
android_resource(
  package="MY.APP.NEW_ID"
)

Gradle’ cleaning in the end (in /android folder):

./gradlew clean

Ref: https://stackoverflow.com/questions/37389905/change-package-name-for-android-in-react-native