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330 interview questionsfor Mobile developer (2024)

Test your technical skills before an interview of Mobile developer with 330 corrected questions. Beginner, Intermediate or Expert level.

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330 questions
Easy
12 votes1563 runs0 comment

List the different build modes in Flutter

Mobile developer
build
modes
Clément Devos (W3D Team)at Jan 4, 2022
Expert
6 votes647 runs0 comment

How to flatten a list of lists in Kotlin

Mobile developer
list
map
Anonymous authorat Jan 18, 2022
Easy
5 votes1601 runs3 comments

What is Dash?

Mobile developer
dart
flutter
Clément Devos (W3D Team)at Jan 4, 2022
Easy
5 votes1410 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
Easy
5 votes364 runs2 comments

What is the purpose of a RecyclerView in Android?

Mobile developer
list
adapter
Nicolas Laurentat Nov 29, 2021
Hard
4 votes718 runs0 comment

What are Semantics in Flutter?

Mobile developer
flutter
widgets
Clément Devos (W3D Team)at Jan 4, 2022
Hard
4 votes453 runs0 comment

Write a React Native animation that spins an image.

Mobile developer
react native
animation
component
Victor Sabatierat Dec 2, 2021
Easy
3 votes1548 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
Expert
3 votes1470 runs1 comment

What is the BuildContext used for in Flutter?

Mobile developer
flutter
widgets
buildcontext
Clément Devos (W3D Team)at Jan 4, 2022
Easy
3 votes1396 runs0 comment

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

Mobile developer
operators
null
Clément Devos (W3D Team)at Jan 4, 2022
Medium
3 votes1347 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
3 votes617 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
3 votes218 runs0 comment

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

Mobile developer
flutter
plugin
Anonymous authorat May 15, 2023
Hard
3 votes194 runs0 comment

How flexbox works in React Native?

Mobile developer
flexbox
react native
Davidat Sep 6, 2023
Easy
2 votes1507 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
Medium
2 votes591 runs1 comment

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

Mobile developer
functions
kotlin
Anonymous authorat Jan 18, 2022
Medium
2 votes583 runs0 comment

Kotlin: Compile the following code and see the error.

Mobile developer
kotlin
null
Anonymous authorat Jan 18, 2022
Hard
2 votes484 runs1 comment

How to add a new element to a list of Kotlin data class

Mobile developer
kotlin
data class
inheritance
Anonymous authorat Jan 18, 2022
Hard
2 votes360 runs0 comment

How to check if a variable is defined in Swift

Mobile developer
swift
optionals
Jorge Gomesat Nov 27, 2021
Expert
2 votes328 runs0 comment

In the onStop() method. I am sure that this callback will always be called and it is likely to be returned only a few times.

Mobile developer
android
callback
Nicolas Laurentat Dec 2, 2021
Mobile developer tests