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.

How does the NavigationBarItem indicate which item is selected?

By using a separate state variable.

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

By updating the back stack manually.

By changing the icon color.

None

What is the primary purpose of the BottomBarDemo project?

To implement complex animations in Compose.

To demonstrate how to create a custom theme in Compose.

To showcase advanced state management in Compose.

To integrate navigation using the Compose NavigationBar component.

None

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

The top bar is hidden.

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

A new instance of the destination is created.

The back stack is cleared.

None

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

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 add a floating action button.

To start a new activity.

None

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

observeNavController()

getCurrentRoute()

findStartDestination()

currentBackStackEntryAsState()

None

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

It automatically creates a navigation graph.

It simplifies the creation of back stack entries.

It enables strict type checking and centralized route management.

It allows dynamic route creation during runtime.

None

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

It controls the transition animations between screens.

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

It manages the navigation back stack.

It renders the bottom navigation items.

None

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

initializeNavController()

composeNavController()

createNavController()

rememberNavController()

None

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

NavigationBarItem

Scaffold

BottomNavigationBar

NavHostController

None

10.

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

androidx.navigation:navigation-compose

androidx.compose.foundation

androidx.compose.ui

androidx.compose.navigation-bar

None

11.

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

To manage animations between screens.

To serve as a placeholder for navigation destinations.

To display the current back stack entry.

To handle user input events.

None

12.

What is the role of the 'BottomNavigationBar' composable?

To manage the application’s theme.

To define the navigation routes.

To create the bottom navigation bar with navigation items.

To render the top bar content.

None

13.

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

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

It saves the state of the current destination.

It removes all destinations up to a specified destination.

It resets the navigation graph.

None

14.

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

To access lifecycle states.

To manage animations.

To render custom icons.

To define the navigation graph and handle destination changes.

None

15.

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

ComposeItem

NavHost

BarItem

ScaffoldItem

None