Flutter Interview Questions (Q & A)

This repository contains visual summaries of common Flutter interview questions. Each image answers a specific question related to Flutter development concepts, practices, and best approaches.

📄 PDF Version Available

📄 Download the full PDF summary of Flutter Interview Questions

📚 Questions List

Click on each question to view the answer image:

1. What is the difference between StatelessWidget and StatefulWidget?
2. How does the setState method work in Flutter?
3. What are keys in Flutter, and when should you use them?
4. Explain the difference between hot reload and hot restart in Flutter.
5. What is a BuildContext in Flutter, and why is it important?
6. How do you handle navigation in Flutter? Explain Navigator.push and Navigator.pop.
7. What are Future and Stream in Dart, and how are they used in Flutter?
8. How do you manage state in a Flutter application? Compare local state vs. app-wide state.
9. What is the role of the pubspec.yaml file in a Flutter project?
10. How do you optimize the performance of a Flutter app?
11. What is the InheritedWidget, and how is it used for state management?
12. Explain how to handle platform-specific code in Flutter (e.g., iOS vs. Android).
13. What is the purpose of the async and await keywords in Dart?
14. How do you implement animations in Flutter? Explain AnimatedContainer vs. explicit animations.
15. What are Slivers in Flutter, and when would you use them?
16. How do you handle errors in Flutter when making API calls?
17. What is the Provider package, and how does it simplify state management?
18. How do you implement dependency injection in Flutter?
19. What are CustomPainter and CustomPaint in Flutter, and when would you use them?
20. How do you handle localization in a Flutter app?
21. What is the difference between mainAxisAlignment and crossAxisAlignment in a Row or Column?
22. How do you test a Flutter application? Explain unit tests vs. widget tests.
23. What is the SafeArea widget, and why is it used?
24. What is the difference between const and final in Dart?
25. What are the types of memory in a Flutter app, and how are they managed?
26. What are the types of streams in Dart, and how are they used in Flutter?
27. What is the lifecycle of a widget in Flutter?
28. What is the lifecycle of a Flutter app?

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🧠 Purpose

This repo is designed as a quick visual reference for developers preparing for Flutter interviews or reviewing core concepts.

✍️ Contributions

Pull requests are welcome! If you'd like to add more Q&A visuals or enhance existing content, feel free to contribute.

📄 License

This project is open source and available under the MIT License.

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