I made an app using Android Studio, but when I upload it to Google Play, it asks me for an aab file.

CodePudding user response：

In Android Stuido go to Build -> Generate signed bundle/APK and select Android application bundle.

after that, enter all your information and paths and your aab file will be generated.

for more information look at

The process will leave you with a built and signed release bundle that’s ready for upload to the Play Store.

for more detailed steps go here.