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https://github.com/whatsupcoders/Flutter-Interview-Questions

This repo contains a list of helpful Flutter related questions you can use to interview potential candidates.
https://github.com/whatsupcoders/Flutter-Interview-Questions

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This repo contains a list of helpful Flutter related questions you can use to interview potential candidates.

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   Awesome Flutter




# Flutter Interview Questions



This file contains a number of Flutter interview questions. 



**Note:** Keep in mind that many of these questions are open-ended and could lead to interesting discussions.







    

        

            

                    

                        

      

  

  





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Title: Flutter Interview Questions

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* What is the difference between a `StatelessWidget` and a `StatefulWidget` in Flutter?

* Explain the  Stateful Widget Lifecycle?

* When do you use the `WidgetsBindingObserver`?

* What is Flutter tree shaking?

* What is a `Spacer` widget?

* What is the difference between hot restart and hot reload?

* What is an `InheritedWidget`? List some examples.

* Why is the `build()` method on `State` and not `StatefulWidget`s?

* What is a pubspec file in Dart?

* How is Flutter native?

* What is a `Navigator` and what are `Routes` in Flutter?

* What is a `PageRoute`?

* Explain `async`, `await` and `Future`s.

* How can you update a `ListView` dynamically?

* What is a `Stream`?

* What are keys in Flutter and when should you use it?

* What are `GlobalKeys`?

* When should you use `mainAxisAlignment` and `crossAxisAlignment`?

* When can you use `double.INFINITY`?

* What is `Ticker`, `Tween` and `AnimatedBuilder`?

* What is ephemeral state?

* What is an `AspectRatio` widget used for?

* How would you access `StatefulWidget` properties from its State?

* Is there a suggested limit to the number of `FloatingActionButton`s a screen can have? Give a reason(s) for your answer

* Mention two or more operations that would require you to use or return a Future.

* What is the purpose of a `SafeArea`?

* When to use a `mainAxisSize`?

* SizedBox VS Container?

* List the Visibility widgets in flutter and the differences? 

* Can we use Color and `Decoration` property simultaneously in the Container? Explain

* Inorder for the CrossAxisAlignment.baseline to work what is another property that we need to set?

* when should we use a `resizeToAvoidBottomInset`? 

* What is the difference between 'as','show' and 'hide' in an import statement?

* What is the importance of a `TextEditingController`?

* Why do we use a `Reverse` property in a Listview?

* Difference between a `Modal` and `Persistent` BottomSheet with an example?

* How is an Inherited Widget different from a Provider?

* What is an `UnmodifiableListView`?

* Difference between these operators "?? and ?."

* What is the purpose of `ModalRoute.of()`?

* Difference between a `Navigator.pushNamed` and `Navigator.pushReplacementNamed`?

* Difference between a `Single Instance` and `Scoped Instance` ?



Title: Animation Interview Questions

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* What is a `vsync`?

* When does the animation reach `completed` or `dismissed` status?

* Difference between `AnimationController and Animation?

* When to use a `SingleTickerProviderStateMixin` and `TickerProviderStateMixin`?

* Define a `TweenAnimation` ? 

* State the importance of a `Ticker` ?

* Why do we need a `mixins` ?



Title: FireStore Interview Questions

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* Difference between getDocuments() vs snapshots()?



## Getting Involved



  1. [How to Contribute](https://github.com/whatsupcoders/Flutter-Interview-Questions/blob/master/CONTRIBUTING.md)

  1. [License](https://github.com/whatsupcoders/Flutter-Interview-Questions/blob/master/LICENSE.md)



## Contributors:



This project is currently maintained by:



- [@whatsupcoders](https://github.com/whatsupcoders)



Feeling inspired? Check our [Contributing guide](https://github.com/whatsupcoders/Flutter-Interview-Questions/blob/master/CONTRIBUTING.md) to get started!