Google Flutter Google Flutter Navigation 1 — Questions and Answers
Question 1: Which method pushes a new route onto the Navigator stack in Flutter?
- Navigator.pop()
- Navigator.push() (Correct answer)
- Navigator.replace()
- Navigator.launch()
Correct answer: Navigator.push()
Navigator.push() adds a new route to the top of the navigation stack, navigating the user to a new screen.
Question 2: What does Navigator.pop() do?
- Pushes a new screen
- Removes the current route from the stack and returns to the previous screen (Correct answer)
- Replaces the current route
- Clears the entire navigation stack
Correct answer: Removes the current route from the stack and returns to the previous screen
Navigator.pop() removes the top route from the stack, returning control to the previous screen.
Question 3: Which Navigator method removes the current route and replaces it with a new one?
- Navigator.push()
- Navigator.pop()
- Navigator.pushReplacement() (Correct answer)
- Navigator.swap()
Correct answer: Navigator.pushReplacement()
Navigator.pushReplacement() replaces the current route with a new one, preventing the user from going back.
Question 4: What is a named route in Flutter?
- A route with an AppBar title
- A route identified by a string name registered in MaterialApp's routes map (Correct answer)
- A route that uses a custom transition animation
- A route that accepts URL query parameters
Correct answer: A route identified by a string name registered in MaterialApp's routes map
Named routes are identified by string identifiers registered in the routes map of MaterialApp, navigated to with Navigator.pushNamed().
Question 5: Which Flutter navigation package provides a declarative, URL-based routing system?
- go_router (Correct answer)
- page_route
- navigator_2
- url_strategy
Correct answer: go_router
go_router is the officially recommended Flutter package for declarative routing with URL support and deep linking.
Question 6: What is the purpose of the WillPopScope widget?
- To add a pop animation to a widget
- To intercept and control the back button press before popping the route (Correct answer)
- To style the navigation bar
- To push a route conditionally
Correct answer: To intercept and control the back button press before popping the route
WillPopScope intercepts the back navigation gesture or button, allowing you to confirm or prevent the pop.
Google Flutter Google Flutter Navigation 1
Which method pushes a new route onto the Navigator stack in Flutter?