Kotlin Kotlin Android Development 2

Question 1

What is `remember` used for in Jetpack Compose?

Accepted Answer

Preserving a value across recompositions

Answer

Storing data in a database

Answer

Creating animations

Answer

Defining navigation routes

Question 2

What is `mutableStateOf` in Jetpack Compose?

Accepted Answer

A state holder that triggers recomposition when its value changes

Answer

A way to create a mutable list

Answer

A coroutine state machine

Answer

A thread-safe map implementation

Question 3

Which Kotlin library is commonly used for dependency injection in Android apps?

Accepted Answer

Hilt

Answer

Retrofit

Answer

OkHttp

Answer

Gson

Question 4

What is Retrofit used for in Android Kotlin development?

Accepted Answer

A type-safe HTTP client for making network requests

Answer

Database migrations

Answer

UI layout inflation

Answer

Thread management

Question 5

What does `LaunchedEffect` do in Jetpack Compose?

Accepted Answer

Runs a suspend function in composition with a given key, relaunching when the key changes

Answer

Launches a new Activity

Answer

Creates a launch animation

Answer

Handles back press events

Question 6

What is `StateFlow` commonly used for in Android ViewModel?

Accepted Answer

Exposing observable UI state from ViewModel to Composables or Fragments

Answer

Storing media files

Answer

Managing network timeouts

Answer

Handling back stack navigation