How do I create a signed release AAB for Google Play?
In Android Studio, choose Build → Generate Signed Bundle / APK, select “Android App Bundle”, create or pick an upload keystore, and build the release .aab. From the command line you can run ./gradlew bundleRelease after configuring signingConfigs in build.gradle. Upload the .aab in Play Console and keep your keystore and passwords backed up — losing the upload key needs a reset request to Google.