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331 interview questionsfor Mobile developer (2026)

Test your technical skills before an interview of Mobile developer with 331 corrected questions. Beginner, Intermediate or Expert level.

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331 questions
Easy
19 votes2185 runs0 comment

List the different build modes in Flutter

Mobile developer
build
modes
Clément Devos (W3D Team)at Jan 4, 2022
Medium
11 votes2235 runs
6 comments

What is Dash?

Mobile developer
dart
flutter
Clément Devos (W3D Team)at Jan 4, 2022
Easy
11 votes2163 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
Hard
11 votes821 runs0 comment

How to flatten a list of lists in Kotlin

Mobile developer
list
map
Anonymous authorat Jan 18, 2022
Easy
10 votes1977 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
Hard
8 votes2068 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 votes574 runs2 comments

How flexbox works in React Native?

Mobile developer
flexbox
react native
Davidat Sep 6, 2023
Hard
7 votes1965 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
6 votes745 runs1 comment

Write a function that returns the maximum of two integers in Kotlin

Mobile developer
functions
kotlin
Anonymous authorat Jan 18, 2022
Easy
5 votes2107 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 votes1990 runs0 comment

What are the different types of Dart Streams?

Mobile developer
dart
streams
Clément Devos (W3D Team)at Jan 4, 2022
Hard
5 votes1935 runs0 comment

What are Dart Isolates?

Mobile developer
dart
isolates
Clément Devos (W3D Team)at Jan 4, 2022
Hard
5 votes1900 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 votes1227 runs0 comment

What are Semantics in Flutter?

Mobile developer
flutter
widgets
Clément Devos (W3D Team)at Jan 4, 2022
Easy
5 votes746 runs0 comment

Kotlin: Compile the following code and see the error.

Mobile developer
kotlin
null
Anonymous authorat Jan 18, 2022
Expert
5 votes495 runs1 comment

How to define a component in React Native?

Mobile developer
react
react-native
components
Davidat Sep 6, 2023
Easy
5 votes428 runs2 comments

What is the purpose of a RecyclerView in Android?

Mobile developer
list
adapter
Nicolas Laurentat Nov 29, 2021
Easy
4 votes1912 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 votes1021 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
4 votes619 runs0 comment

Create a data class with a vip property implementing the Human interface

Mobile developer
kotlin
data class
interfaces
Anonymous authorat Jan 18, 2022
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