Google Flutter Essentials 4

Question 1

Which widget makes a long list of items scrollable and builds them lazily?

Accepted Answer

ListView.builder

Answer

Column

Answer

Stack

Answer

GridView.count

Question 2

Which widget adds padding around its child?

Accepted Answer

Padding

Answer

Margin

Answer

Spacer

Answer

Align

Question 3

How do you add an external package to a Flutter project?

Accepted Answer

Add it under dependencies in pubspec.yaml

Answer

Add it to AndroidManifest.xml

Answer

Add it to main.dart imports only

Answer

Run flutter add automatically

Question 4

Which widget overlaps children, positioning them relative to its box edges?

Accepted Answer

Stack

Answer

Column

Answer

Row

Answer

Flex

Question 5

What does the Expanded widget do inside a Row or Column?

Accepted Answer

Forces its child to fill available space along the main axis

Answer

Adds fixed padding

Answer

Centers its child

Answer

Clips overflow

Question 6

Which widget detects taps and other gestures on a non-interactive child?

Accepted Answer

GestureDetector

Answer

Listener

Answer

InkResponse

Answer

Focus

Question 7

Which file is the conventional entry point of a Flutter app?

Accepted Answer

lib/main.dart

Answer

index.dart

Answer

app.dart

Answer

pubspec.yaml