25 interview questions on Flutter for developers (2025)

Easy

19 votes2142 runs0 comment

List the different build modes in Flutter

Mobile developer

build

modes

Clément Devos (W3D Team)at Jan 4, 2022

Easy

10 votes2120 runs0 comment

Explain the difference between the `main` and `runApp` methods in Flutter.

Mobile developer

flutter

main

runApp

Clément Devos (W3D Team)at Jan 4, 2022

Easy

10 votes1941 runs0 comment

Explain the difference between the final and const keywords in Flutter.

Mobile developer

flutter

const

final

Clément Devos (W3D Team)at Jan 4, 2022

Medium

9 votes2188 runs

6 comments

What is Dash?

Mobile developer

dart

flutter

Clément Devos (W3D Team)at Jan 4, 2022

Expert

8 votes2029 runs1 comment

What is the BuildContext used for in Flutter?

Mobile developer

flutter

widgets

buildcontext

Clément Devos (W3D Team)at Jan 4, 2022

Hard

7 votes1927 runs0 comment

How to communicate with Android/ iOS code with Flutter?

Mobile developer

flutter

android

ios

Clément Devos (W3D Team)at Jan 4, 2022

Easy

5 votes2065 runs0 comment

Explain the difference between a Hot Restart and a Hot Reload in Flutter.

Mobile developer

flutter

hot reload

hot restart

Clément Devos (W3D Team)at Jan 4, 2022

Easy

5 votes1954 runs0 comment

What are the different types of Dart Streams?

Mobile developer

dart

streams

Clément Devos (W3D Team)at Jan 4, 2022

Hard

5 votes1898 runs0 comment

What are Dart Isolates?

Mobile developer

dart

isolates

Clément Devos (W3D Team)at Jan 4, 2022

Hard

5 votes1864 runs0 comment

How to make a Text widget display a double yellow highlight in Flutter

Mobile developer

flutter

theme

Clément Devos (W3D Team)at Jan 4, 2022

Medium

4 votes1874 runs0 comment

What is the difference between an Exception and an Error in Flutter?

Mobile developer

flutter

exceptions

Clément Devos (W3D Team)at Jan 4, 2022

Hard

4 votes1192 runs0 comment

What are Semantics in Flutter?

Mobile developer

flutter

widgets

Clément Devos (W3D Team)at Jan 4, 2022

Hard

4 votes992 runs2 comments

What are the differences between the Offstage Widget and Opacity?

Mobile developer

flutter

widget

opacity

Clément Devos (W3D Team)at Jan 4, 2022

Easy

4 votes342 runs0 comment

What is a mounted Widget in Flutter?

Mobile developer

flutter

widget

state

Vincent Cotroat Nov 3, 2023

Easy

3 votes1951 runs1 comment

What is the `??=` operator for in Flutter?

Mobile developer

operators

null

Clément Devos (W3D Team)at Aug 26, 2024

Medium

2 votes2042 runs1 comment

How to detect that the code is in release mode in Flutter?

Mobile developer

constants

release

Clément Devos (W3D Team)at Jan 4, 2022

Hard

2 votes1879 runs0 comment

What is overflow in Flutter?

Mobile developer

flutter

widgets

Clément Devos (W3D Team)at Jan 4, 2022

Medium

2 votes479 runs

1 comment

What is the difference between a package and a plugin in Flutter?

Mobile developer

flutter

plugin

Anonymous authorat May 15, 2023

Easy

1 vote1899 runs1 comment

How to intercept the Back button on Android in Flutter?

Mobile developer

flutter

widgets

Clément Devos (W3D Team)at Jan 4, 2022

Medium

1 vote1615 runs0 comment

What does the deferred keyword do in Dart?

Mobile developer

dart

imports

Clément Devos (W3D Team)at Jan 4, 2022

25 interview questions on Flutterfor developers (2025)

Test your technical skills before an interview of Flutter with 25 corrected questions. Beginner, Intermediate or Expert level.

List the different build modes in Flutter

Explain the difference between the `main` and `runApp` methods in Flutter.

Explain the difference between the final and const keywords in Flutter.

What is Dash?

What is the BuildContext used for in Flutter?

How to communicate with Android/ iOS code with Flutter?

Explain the difference between a Hot Restart and a Hot Reload in Flutter.

What are the different types of Dart Streams?

What are Dart Isolates?

How to make a Text widget display a double yellow highlight in Flutter

What is the difference between an Exception and an Error in Flutter?

What are Semantics in Flutter?

What are the differences between the Offstage Widget and Opacity?

What is a mounted Widget in Flutter?

What is the `??=` operator for in Flutter?

How to detect that the code is in release mode in Flutter?

What is overflow in Flutter?

What is the difference between a package and a plugin in Flutter?

How to intercept the Back button on Android in Flutter?

What does the deferred keyword do in Dart?

25 interview questions on Flutterfor developers (2025)

Test your technical skills before an interview of Flutter with 25 corrected questions. Beginner, Intermediate or Expert level.

List the different build modes in Flutter

Explain the difference between the `main` and `runApp` methods in Flutter.

Explain the difference between the *final* and *const* keywords in Flutter.

What is Dash?

What is the BuildContext used for in Flutter?

How to communicate with Android/ iOS code with Flutter?

Explain the difference between a Hot Restart and a Hot Reload in Flutter.

What are the different types of Dart Streams?

What are Dart Isolates?

How to make a Text widget display a double yellow highlight in Flutter

What is the difference between an Exception and an Error in Flutter?

What are Semantics in Flutter?

What are the differences between the Offstage Widget and Opacity?

What is a mounted Widget in Flutter?

What is the `??=` operator for in Flutter?

How to detect that the code is in release mode in Flutter?

What is overflow in Flutter?

What is the difference between a package and a plugin in Flutter?

How to intercept the Back button on Android in Flutter?

What does the deferred keyword do in Dart?

Explain the difference between the final and const keywords in Flutter.