24 interview questions on Flutter for developers (2026)

Easy

19 votes2255 runs0 comment

List the different build modes in Flutter

Mobile developer

build

modes

Clément Devos (W3D Team)at Jan 4, 2022

Medium

12 votes2306 runs

7 comments

What is Dash?

Mobile developer

dart

flutter

Clément Devos (W3D Team)at Jan 4, 2022

Easy

11 votes2230 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 votes2035 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

Expert

9 votes2130 runs1 comment

What is the BuildContext used for in Flutter?

Mobile developer

flutter

widgets

buildcontext

Clément Devos (W3D Team)at Jan 4, 2022

Hard

8 votes2025 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

7 votes2170 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

6 votes2049 runs0 comment

What are the different types of Dart Streams?

Mobile developer

dart

streams

Clément Devos (W3D Team)at Jan 4, 2022

Medium

5 votes1990 runs0 comment

What are Dart Isolates?

Mobile developer

dart

isolates

Clément Devos (W3D Team)at Jan 4, 2022

Hard

5 votes1956 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

Hard

5 votes1284 runs0 comment

What are Semantics in Flutter?

Mobile developer

flutter

widgets

Clément Devos (W3D Team)at Jan 4, 2022

Easy

4 votes1971 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

Easy

4 votes370 runs0 comment

What is a mounted Widget in Flutter?

Mobile developer

flutter

widget

state

Vincent Cotroat Nov 3, 2023

Medium

3 votes2147 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

Easy

3 votes2044 runs1 comment

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

Mobile developer

operators

null

Clément Devos (W3D Team)at Aug 26, 2024

Hard

3 votes1068 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

Medium

2 votes1969 runs0 comment

What is overflow in Flutter?

Mobile developer

flutter

widgets

Clément Devos (W3D Team)at Jan 4, 2022

Easy

2 votes649 runs0 comment

What is the difference between a stateless and stateful component in Flutter?

Mobile developer

stateless

stateful

ahmedat Sep 5, 2022

Easy

1 vote1991 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 vote1709 runs0 comment

What does the deferred keyword do in Dart?

Mobile developer

dart

imports

Clément Devos (W3D Team)at Jan 4, 2022

24 interview questions on Flutterfor developers (2026)

Test your technical skills before an interview of Flutter with 24 corrected questions. Beginner, Intermediate or Expert level.

List the different build modes in Flutter

What is Dash?

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

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

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 are Semantics in Flutter?

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

What is a mounted Widget in Flutter?

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

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

What are the differences between the Offstage Widget and Opacity?

What is overflow in Flutter?

What is the difference between a stateless and stateful component in Flutter?

How to intercept the Back button on Android in Flutter?

What does the deferred keyword do in Dart?

24 interview questions on Flutterfor developers (2026)

Test your technical skills before an interview of Flutter with 24 corrected questions. Beginner, Intermediate or Expert level.

List the different build modes in Flutter

What is Dash?

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

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

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 are Semantics in Flutter?

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

What is a mounted Widget in Flutter?

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

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

What are the differences between the Offstage Widget and Opacity?

What is overflow in Flutter?

What is the difference between a stateless and stateful component 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.