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.

Title: Flutter Interview Questions

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 StatefulWidgets?
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 Futures.
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 FloatingActionButtons 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

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

Difference between getDocuments() vs snapshots()?

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