Here is a sample list of common Flutter interview questions and answers:
1. What is Flutter?
Flutter is an open-source UI software development kit created by Google for building natively compiled applications for mobile, web, and desktop using a single codebase.
2. What are the advantages of Flutter?
Some advantages of using Flutter include:
- Hot Reload feature for faster development and iteration.
- Single codebase for multiple platforms.
- Fast performance due to the use of Dart's Just-in-Time (JIT) compiler and native rendering.
3. What is the difference between StatelessWidget and StatefulWidget?
StatelessWidget is immutable, meaning it cannot change its internal state once created. It is suitable for static UI components. StatefulWidget, on the other hand, can maintain its internal state and handle dynamic UI components.
4. How does Hot Reload work in Flutter?
Hot Reload allows developers to instantly see the changes made in the code without restarting the app or losing the current app state.
5. Explain the concept of widgets in Flutter.
Widgets are the building blocks of Flutter UI. Everything in Flutter is a widget, from a simple button to complex layouts. Widgets can be either StatelessWidget or StatefulWidget.
6. How can you handle user input in Flutter?
Flutter offers various widgets like TextField, RaisedButton, GestureDetector, etc., to handle user input. These widgets allow capturing and responding to user interactions or text input.
7. What is the purpose of the `async` and `await` keywords in Dart?
The `async` keyword is used to mark a function as asynchronous, which means it can handle asynchronous operations. The `await` keyword is used within an async function to pause and wait for an asynchronous operation to complete before proceeding.
These are just a few examples of Flutter interview questions and answers. It's always recommended to do further research and preparation for a comprehensive understanding and successful interview.