Flutter Program ver 3.7.6 and Android Studio Eel ver 2022.1.1 Patch 1

How to fix this line Invalid use of private type in public api

_TodoListState createState() => _TodoListState();

Screenshot below

Device Manager in Android Studio Eel version is grayed out. Flutter project was from Android Studio Dolphin. I don't see any errors in Flutter. See screenshots of all my dart files and android Studio Eel notice device manager and play button  is grayed out.

main.dart - No issue see screenshot.

second.dart - No issue see screenshot

third.dart - No issue see screenshot

bt1.dart - No issue see screenshot

Android Studio Eel version both device manager and play button is grayed out. See screenshot

How to resolve this error message in flutter - library_private_types_in_public_api

The line of code it's complaining is  this -

_MyPageState createState() => _MyPageState();



The flutter code lines - class MyPage extends StatefulWidget {
const MyPage({super.key});

@override
_MyPageState createState() => _MyPageState();
}

How to resolve Avoid using private types in Public Apis

_MyApp createState() => _MyApp();

I try to fix it like this State<MyApp> createState() => MyAppState();
But then I hit another issue it will say create class 'MyAppState'.

See screenshot