The old flutter build apk would put the new .apk file directly off the root project build directory and this was very convenient. The new gradle based build system puts it deep down where it is not as easy to find <app dir>/android/app/build/outputs/app-release.apk.

If this issue is accepted and gradle build tool is changed to do the old behavior, make sure to also update the path provided in the docs here:

https://flutter.io/android-release/#building-a-release-apk