AAD AAD Jetpack Libraries & Modern Android Development 2

Question 1

What is the role of a Room Entity?

Accepted Answer

It defines a table in the SQLite database

Answer

A Room @Entity is a data class annotated to represent a table in the SQLite database, with each field mapping to a column.

Question 2

Which Jetpack Compose function is used to remember a mutable state variable across recompositions?

Accepted Answer

remember { mutableStateOf() }

Answer

remember { mutableStateOf() } creates a state holder that Compose remembers across recompositions, triggering UI updates whenever the value changes.

Question 3

What does the @Composable annotation indicate in Jetpack Compose?

Accepted Answer

The function describes UI that Compose can render and recompose

Answer

@Composable marks a function as a Compose UI function that describes part of the UI tree and can be recomposed by the Compose runtime when state changes.

Question 4

Which WorkManager constraint ensures a task only runs when the device is connected to an unmetered network?

Accepted Answer

NetworkType.UNMETERED

Answer

NetworkType.UNMETERED in a Constraints builder ensures WorkManager only executes the task when the device is on a Wi-Fi or similar unmetered connection.

Question 5

What is Hilt used for in Android Jetpack?

Accepted Answer

Dependency injection

Answer

Hilt is a Jetpack library built on Dagger that provides a standard way to perform dependency injection in Android apps with compile-time validation.

(AAD) Associate Android Developer Certification Practice Test

(AAD) Associate Android Developer Certification Practice Test

AAD AAD Jetpack Libraries & Modern Android Development 2