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.

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

To manage animations.

To render custom icons.

To access lifecycle states.

To define the navigation graph and handle destination changes.

None

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

ScaffoldItem

ComposeItem

BarItem

NavHost

None

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

A new instance of the destination is created.

The back stack is cleared.

The top bar is hidden.

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

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

findStartDestination()

observeNavController()

currentBackStackEntryAsState()

getCurrentRoute()

None

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

How does the NavigationBarItem indicate which item is selected?

By using a separate state variable.

By changing the icon color.

By updating the back stack manually.

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

None

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

initializeNavController()

composeNavController()

createNavController()

rememberNavController()

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 allows dynamic route creation during runtime.

It enables strict type checking and centralized route management.

None

10.

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

11.

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

It resets the navigation graph.

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.

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.

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

androidx.navigation:navigation-compose

androidx.compose.ui

androidx.compose.foundation

androidx.compose.navigation-bar

None

14.

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

15.

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

NavHostController

Scaffold

NavigationBarItem

BottomNavigationBar

None