无法将现有的 Android apk 更新为 Flutter apk

Question

I am unable to update my existing app in Android.

Previously, I have uploaded an app to play store that I developed using native Android(Java). Right now I am migrating it to Flutter. As I wanna test before publishing the apk, I did a local APK install to update my existing app on the phone but i received error "App not installed".

When i deleted the existing app and made a fresh install everything works fine, APK installed successfully.

I followed the steps provided by Google here:

https://flutter.dev/docs/deployment/android

These are the steps I did:

1) Generated the keystore file

2) Added settings configuration in build.gradle and key.properties file

3) Ensure my application ID is the same (which it is because it prompts me update when installing apk)

4) run flutter build apk --release command

Answer 1

If you can't update the App on Play Store, I think the problem is on the first step that you have to use the same keystore file to update your app. Generating new keystore file is not acceptable even if application ID is the same.