AppDev FINALS QUIZ

Question 1

Flutter uses ____ for its language.

Answer 1

Dart

Question 2

Flutter is not a language [T/F]

Answer 2

T

Question 3

is Google’s mobile SDK / UI framework that enables
developers to build native apps that run on Android and iOS devices.

Answer 3

Flutter

Question 4

Developers write code in a single codebase that works on both platforms [T/F]

Answer 4

T

Question 5

You can change your code and hot reload the changes, without any kind of delay [T/F]

Answer 5

T

Question 6

Flutter was not written for high productivity, to get apps out fast. [T/F]

Answer 6

False

Question 7

Flutter does not include the UI Widgets you need [T/F]

Answer 7

F

Question 8

Flutter works with most IDEs [T/F]

Answer 8

T

Question 9

When you write an Android / iOS app with the Flutter Widgets, it looks like a normal Android app [T/F]

Answer 9

T

Question 10

The included Flutter UI Widgets work seamlessly and conventionally with the target platform. Scrolling,
avigation, icons and fonts match the target system. [T/F]

Answer 10

T

Question 11

The code you write in Flutter runs natively so it flies! [T/F]

Answer 11

T

Question 12

Flutter is not free and Open Source. [T/F]

Answer 12

F

Question 13

The code: flutter create firstapp

Answer 13

creates a project named firstapp

Question 14

Type code <space> to \_\_\_\_</space>

Answer 14

To automatically load flutter app to vscode

Question 15

This usually contains configuration files. The most important of these configuration files is the ‘pubspec.yaml’ file, which declares the project dependencies.

Answer 15

[root] folder

Question 16

Intellij project folder. Feel free to remove this folder if
you are using Visual Studio Code.

Answer 16

.idea folder

Question 17

As the name suggests, the folder contains all the
Android-related files and code(s) for the application.
This is where Android-specific settings and code
resides. When building for Android, Flutter uses Gradle
as the dependency manager

Answer 17

android folder

Question 18

This folder is created and used by gradle when you
build the project.

Answer 18

build

Question 19

Similar to the ‘android’ folder, this folder contains the
iOS related files and code(s) for the application.

Answer 19

ios

Question 20

This is where the application code resides. You should
see a file ‘main.dart’, the entry point for the Flutter application. This is the file you select and run. You will add more files and subfolders into this folder.

Answer 20

lib

Question 21

This is where the unit testing code resides. You may add more files and subfolders into this folder

Answer 21

test

Question 22

These are great for developers, enabling them to develop their code to run on multiple devices, see how they look on each device.

Answer 22

Emulators

Question 23

To run the flutter app type____

Answer 23

flutter run

Question 24

You don’t need to be inside the project folder of your app [T/F]

Answer 24

F

Question 25

This loads your changed code into the Dart VM and restarts the application. This is the safest thing to do and doesn’t take long.

Answer 25

Hot Restarting

Question 26

If you want to load your changed code into the Dart VM but you don’t want to change the application state, you can do this. The result might be different behavior vs a hot restart.

Answer 26

Hot Reloading

Question 27

If you are using ‘flutter’ run to run the app from the command line, you can use the key ‘R’ to hot ____ and the key ‘r’ to hot ____.

Answer 27

restart, reload

Question 28

the Building Blocks of your UI.

Answer 28

Widgets

Question 29

Whenever we build a user interface in Flutter, it is composed of ____

Answer 29

Widgets

Question 30

Putting your widgets together is called _____

Answer 30

Composition

Question 31

Everything is a widget [T/F]

Answer 31

T

Question 32

A widget can contain other widgets, in a tree structure, a hierarchy. This is often called ______

Answer 32

Widget Tree

Question 33

what is this process? 1. Import helper library from flutter to get content on the screen 2. Define a ‘main’ function to run when our apps starts 3. Create a new text widget to show some text on the screen 4. Take the widget and get it on the screen

Answer 33

Four step design process

Question 34

we are trying to import some code from somewhere else

Answer 34

import

Question 35

We are importing code from a third party package, not a dart standard lib

Answer 35

package

Question 36

The name of the package we are importing

Answer 36

flutter

Question 37

the file we are importing from that package

Answer 37

/material.dart

Question 38

is a widget to create widgets to design applications in Flutter.

Answer 38

MaterialApp

Question 39

Some of them are title, home, theme, color that helps developer design their app

Answer 39

Material app properties

Question 40

provides a framework which implements the basic material design visual layout structure of the flutter app

Answer 40

Scaffold Widget

Question 41

Code to remove debug banner on app

Answer 41

debugShowCheckedModeBanner: false

Question 42

Code to import material.dart

Answer 42

import 'package:flutter/material.dart';

Question 43

This widget will have no instance variables that will change

Answer 43

Stateless Widget

Question 44

The widgets whose state can not be altered once they are built are called ____

Answer 44

Stateless Widget

Question 45

These widgets are immutable once they are built i.e any amount of change in the variables, icons, buttons, or retrieving data can not change the state of the app.

Answer 45

Stateless Widget

Question 46

____ in flutter is a convenience widget that combines common painting, positioning, and sizing of widgets

Answer 46

Container class

Question 47

_____ can be used to store one or more widgets and position it on the screen according to our convenience.

Answer 47

Container Class

Question 48

They are made up of multiple rows of items, which include text, buttons, toggles, icons, thumbnails, and many more.

Answer 48

Flutter Lists

Question 49

The _____ is a perfect standard for displaying lists that contains only a few items.

Answer 49

ListView

Question 50

ListView also includes ListTitle widget, which gives more properties for the visual structure to a list of data. [T/F]

Answer 50

T

Question 51

______ are a great way to make your list look classy.

Answer 51

Cards

Question 52

This widget will have instance variables that will change, and widget needs to update itself on screen when the data changes.

Answer 52

Stateful Widget

Question 53

A______ will maintain data and will react accordingly whatever the data is doing within the mobile application.

Answer 53

Stateful Widget

Question 54

A ______ is a mutable widget that is the reason it can be drawn multiple times within its lifetime.

Answer 54

Stateful Widget