Compose Navigation Bar Quiz

Welcome to the Compose Navigation Bar Quiz! This quiz will test your understanding of integrating navigation into a Compose-based Android app using the NavigationBar component. It covers key concepts such as setting up navigation routes, creating and managing the NavHostController, using the Scaffold component for layout, and handling navigation interactions.

What is the benefit of defining routes using a sealed class?

It automatically creates a navigation graph.

It enables strict type checking and centralized route management.

It allows dynamic route creation during runtime.

It simplifies the creation of back stack entries.

None

Which class is used to represent each item in the bottom bar?

ComposeItem

ScaffoldItem

NavHost

BarItem

None

How does the NavigationBarItem indicate which item is selected?

By using a separate state variable.

By updating the back stack manually.

By changing the icon color.

By comparing the current route with the item’s route.

None

Which component is used to manage the back stack and track the current destination in the BottomBarDemo project?

NavHostController

NavigationBarItem

Scaffold

BottomNavigationBar

None

Which function is used to create a stateful NavHostController instance in Compose?

composeNavController()

createNavController()

initializeNavController()

rememberNavController()

None

Which of the following libraries is added for navigation support in the BottomBarDemo project?

androidx.compose.ui

androidx.compose.foundation

androidx.navigation:navigation-compose

androidx.compose.navigation-bar

None

Why is the 'NavHost' used in conjunction with the NavHostController?

To access lifecycle states.

To manage animations.

To define the navigation graph and handle destination changes.

To render custom icons.

None

What is the purpose of the 'NavHost' in the Compose Navigation system?

To handle user input events.

To display the current back stack entry.

To manage animations between screens.

To serve as a placeholder for navigation destinations.

None

What role does the 'TopAppBar' play in a Scaffold layout?

It manages the navigation back stack.

It controls the transition animations between screens.

It displays the title and content at the top of the screen.

It renders the bottom navigation items.

None

10.

What is the primary purpose of the BottomBarDemo project?

To demonstrate how to create a custom theme in Compose.

To implement complex animations in Compose.

To integrate navigation using the Compose NavigationBar component.

To showcase advanced state management in Compose.

None

11.

What is the purpose of using 'launchSingleTop' in the navigate method?

To add a floating action button.

To create multiple instances of the same destination.

To ensure only one instance of a destination is on the top of the back stack.

To start a new activity.

None

12.

What happens when 'saveState' is set to true in the navigate method?

The state of the current screen is saved for later restoration.

A new instance of the destination is created.

The back stack is cleared.

The top bar is hidden.

None

13.

What does the 'popUpTo' function do in the navigation setup?

It resets the navigation graph.

It saves the state of the current destination.

It adds a new destination to the top of the stack.

It removes all destinations up to a specified destination.

None

14.

Which method is used to retrieve the current route in the BottomNavigationBar?

getCurrentRoute()

findStartDestination()

currentBackStackEntryAsState()

observeNavController()

None

15.

What is the role of the 'BottomNavigationBar' composable?

To manage the application’s theme.

To create the bottom navigation bar with navigation items.

To render the top bar content.

To define the navigation routes.

None