Target API level 31

[Anke]

@UgoPiazza

If you have a simple solution to change the target API of apps created with app inventor I would be grateful.

Not really a "simple" solution:

1. Build the APK.
2. Decompile it.
3. Edit the Manifest and add
   android:exported="true"
   to each <activity ... > and <receiver ... >.
4. Set targetSdkVersion = 31.
5. Recompile it.
6. Check if the app (APK) can be installed on your test devices.
7. If so, convert the APK to AAB:
   https://community.niotron.com/t/convert-apk-to-aab-file/9684
   (otherwise check if you missed to add android:exported="true" to every <activity> and <receiver> and continue with step 4).