Google Flutter App Development 4

Question 1

How do you navigate to a new screen using the imperative Navigator API?

Accepted Answer

Navigator.push()

Answer

Navigator.go()

Answer

Navigator.open()

Answer

Navigator.show()

Question 2

Which widget makes a long list scrollable while building items lazily on demand?

Accepted Answer

ListView.builder

Answer

Column

Answer

Stack

Answer

GridView (default)

Question 3

Which keyword pair is used in Dart to handle a Future asynchronously and wait for its result?

Accepted Answer

async/await

Answer

yield/await

Answer

defer/await

Answer

sync/wait

Question 4

Which widget rebuilds its UI in response to a stream of asynchronous data?

Accepted Answer

StreamBuilder

Answer

FutureBuilder

Answer

ListView

Answer

AnimatedBuilder

Question 5

What does Navigator.pop() do?

Accepted Answer

Removes the current route and returns to the previous screen

Answer

Pushes a new screen

Answer

Closes the app

Answer

Refreshes the current screen

Question 6

Which package is commonly used for declarative, URL-based routing in Flutter?

Accepted Answer

go_router

Answer

dio

Answer

provider

Answer

http

Question 7

Which widget would you use to make any child respond to taps without a Material ripple?

Accepted Answer

GestureDetector

Answer

ElevatedButton

Answer

TextButton

Answer

Checkbox