General & Dart Language Basics

1. What is Flutter, and how is it different from other mobile app development frameworks?
2. What is Dart, and why does Flutter use Dart?
3. What are the advantages of using Flutter?
4. Explain the difference between hot reload and hot restart in Flutter.
5. What are the main features of Dart?
6. What are null safety and late keyword in Dart?
7. How do you manage asynchronous operations in Dart?
8. What is the difference between final, const, and var in Dart?
9. What are mixins in Dart and how are they used?
10. How does Dart handle memory management?

Flutter Widgets

11. What is a widget in Flutter?
12. What is the difference between StatelessWidget and StatefulWidget?
13. What is the build() method in Flutter?
14. Explain the widget lifecycle in Flutter.
15. What are keys in Flutter? When should you use GlobalKey?
16. What is the difference between mainAxisAlignment and crossAxisAlignment?
17. What is the difference between Expanded, Flexible, and Spacer?
18. How does Flutter handle layout and rendering?
19. What is a FutureBuilder and StreamBuilder?
20. What are InheritedWidget and Provider?

State Management

21. What are different state management approaches in Flutter?
22. Explain how Provider works in Flutter.
23. Compare BLoC vs Provider.
24. What are Cubit and BLoC in Flutter?
25. How do you manage state in a large Flutter application?

Navigation & Routing

26. How does Flutter handle navigation?
27. What is the Navigator 1.0 vs Navigator 2.0?
28. How can you pass data between screens in Flutter?
29. How do you implement named routes?
30. What are deep links, and how does Flutter support them?

Networking & Persistence

31. How do you make API calls in Flutter?
32. What is the use of http, dio, and other networking packages?
33. How do you parse JSON in Flutter?
34. What is shared_preferences? When would you use it?
35. How do you work with SQLite in Flutter?

UI and Design

36. How do you implement custom widgets in Flutter?
37. What is the difference between ThemeData and TextTheme?
38. How do you implement animations in Flutter?
39. What is a Hero animation in Flutter?
40. How do you handle responsiveness in Flutter?

Testing & Debugging

41. How do you test a Flutter app?
42. What are the different types of tests in Flutter?
43. How do you use flutter_test and mock dependencies?
44. How do you debug performance issues in Flutter?

Advanced & Deployment

45. How do you optimize performance in Flutter apps?
46. What is tree shaking in Flutter?
47. How do you create and use custom packages or plugins?
48. How do you integrate native code (Java/Kotlin or Swift/Objective-C) in Flutter?
49. How do you handle platform-specific code in Flutter?
50. How do you deploy a Flutter app to the Play Store and App Store?