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

The back stack is cleared.

The top bar is hidden.

A new instance of the destination is created.

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

None

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

ComposeItem

BarItem

ScaffoldItem

NavHost

None

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

It allows dynamic route creation during runtime.

It enables strict type checking and centralized route management.

It simplifies the creation of back stack entries.

It automatically creates a navigation graph.

None

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

To define the navigation graph and handle destination changes.

To manage animations.

To render custom icons.

To access lifecycle states.

None

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

NavHostController

NavigationBarItem

BottomNavigationBar

Scaffold

None

How does the NavigationBarItem indicate which item is selected?

By changing the icon color.

By updating the back stack manually.

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

By using a separate state variable.

None

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 showcase advanced state management in Compose.

To integrate navigation using the Compose NavigationBar component.

None

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

createNavController()

rememberNavController()

composeNavController()

initializeNavController()

None

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

androidx.compose.navigation-bar

androidx.compose.foundation

androidx.navigation:navigation-compose

androidx.compose.ui

None

10.

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

currentBackStackEntryAsState()

getCurrentRoute()

observeNavController()

findStartDestination()

None

11.

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

To create multiple instances of the same destination.

To start a new activity.

To add a floating action button.

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

None

12.

What is the role of the 'BottomNavigationBar' composable?

To render the top bar content.

To manage the application’s theme.

To define the navigation routes.

To create the bottom navigation bar with navigation items.

None

13.

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

To display the current back stack entry.

To handle user input events.

To manage animations between screens.

To serve as a placeholder for navigation destinations.

None

14.

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

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

It resets the navigation graph.

It removes all destinations up to a specified destination.

It saves the state of the current destination.

None

15.

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

It manages the navigation back stack.

It renders the bottom navigation items.

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

It controls the transition animations between screens.

None