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

To serve as a placeholder for navigation destinations.

To handle user input events.

To manage animations between screens.

To display the current back stack entry.

None

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

The back stack is cleared.

A new instance of the destination is created.

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

The top bar is hidden.

None

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

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

To create multiple instances of the same destination.

To add a floating action button.

To start a new activity.

None

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

getCurrentRoute()

observeNavController()

findStartDestination()

currentBackStackEntryAsState()

None

What is the primary purpose of the BottomBarDemo project?

To integrate navigation using the Compose NavigationBar component.

To demonstrate how to create a custom theme in Compose.

To showcase advanced state management in Compose.

To implement complex animations in Compose.

None

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

NavHostController

NavigationBarItem

Scaffold

BottomNavigationBar

None

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

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

It removes all destinations up to a specified destination.

It saves the state of the current destination.

It resets the navigation graph.

None

How does the NavigationBarItem indicate which item is selected?

By updating the back stack manually.

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

By changing the icon color.

By using a separate state variable.

None

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

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

It renders the bottom navigation items.

It manages the navigation back stack.

It controls the transition animations between screens.

None

10.

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

initializeNavController()

composeNavController()

createNavController()

rememberNavController()

None

11.

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

BarItem

NavHost

ComposeItem

ScaffoldItem

None

12.

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

To manage animations.

To define the navigation graph and handle destination changes.

To access lifecycle states.

To render custom icons.

None

13.

What is the role of the 'BottomNavigationBar' composable?

To manage the application’s theme.

To define the navigation routes.

To render the top bar content.

To create the bottom navigation bar with navigation items.

None

14.

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

It enables strict type checking and centralized route management.

It simplifies the creation of back stack entries.

It allows dynamic route creation during runtime.

It automatically creates a navigation graph.

None

15.

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

androidx.compose.navigation-bar

androidx.navigation:navigation-compose

androidx.compose.ui

androidx.compose.foundation

None