Android AFD-200 問題練習

Question No : 1
This Flutter widget is used to toggle the on/off state of a single setting .
Which of the following choices represents this definition?

• A.onOff Widget
• B.SlideA Widget
• C.noYes Widget
• D.Switch Widget

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Question No : 2
If you want to create a Flutter app using a Mac computer, you need to install Android Studio or another IDE software and another prerequisite software Flutter SDK. However, you can test your Flutter apps using IPhone emulator only.

• A.True
• B.False

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Question No : 3
In Flutter, AlertDialog Widget is similar to a small interface which appears for a few seconds at the bottom of the app user interface when the app user takes a specific action such as clicking a button.

• A.True
• B.False

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Question No : 4
Adding a Slider widget in a Flutter app interface should be used to select multiple values at the same time.

• A.True
• B.False

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Question No : 5
This widget helps you to have a specific width and/or height between widgets.
Which of the following term is this definition for?

• A.AppBar
• B.SizedBox
• C.SafeArea
• D.onChanged

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Question No : 6
If you created a Flutter app using the Firebase services where the app users had to login to this App using Firebase user accounts (email and password), which of the following Firebase products store these app users' accounts?

• A.Database
• B.Authentication
• C.Storage
• D.Hosting

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Question No : 7
A floating action button in Flutter development is by default a circular icon button, and you should add the Icon widget as a child widget of FloatingActionButton widget.
Which of the following choices is correct to add a phone icon to the FloatingActionButton widget in a Flutter app?

• A.Icon<"phone">,
• B.icon(icon.style:"phone"),
• C.Icon(Icons.phone),
• D.icon=phone.Flutter,

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Question No : 8
This Flutter widget is used to toggle the on/off state of a single setting.
Which of the following choices represents this definition?

• A.onOff Widget
• B.SlideA Widget
• C.noYes Widget
• D.Switch Widget

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正解:

Question No : 9
................. command checks your environment and displays a report of the status of your Flutter and Android Studio other than IDE software installation.
Which of the following choices is the correct answer to fill in the blank above?

• A.Flutter Doctor
• B.Flutter Connection
• C.Flutter Screen
• D.Flutter IDE_XML

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Question No : 10
The image in this question includes a part of Android Studio tools bar.



Which of the following choices is correct about the missing icon name (represented by question marks)?

• A.AVD Manager (Android Virtual Device Manager)
• B.SDK Update
• C.SDK Manager
• D.Insert Image

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Question No : 11
Which of the following choices is the best answer for adding an image from your computer hard disk to a Flutter project?

• A.You cannot add an image from your computer hard disk to a Flutter project. You can only configure your code to use an image from a web link.
• B.Add a new folder (directory) to your Flutter file structure, copy the image from your hard disk, paste this image in the image folder then configure your Dart file in this Flutter project to use this image file name.
• C.Add a new folder (directory) to your Flutter file structure, copy the image from your hard disk, paste this image in the image folder, configure your Dart file in this Flutter project to use this image file name, configure your Flutter project pubspec.yaml file to use this image folder, then click "Packages get" at the top of pubspec.yaml file.
• D.Click File menu in any Flutter IDE, select Insert, select Image, browse to select the image, click Save three times, and then restart your ID

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Question No : 12
A Stateful widget is a dynamic widget which can change the appearance of its content in response to events triggered by user's interactions or when it receives data.

• A.True
• B.False

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Question No : 13
While configuring your Android app on Firebase web site, you should download the google-services.json file from Firebase web site and add it to your Android app files as illustrated in the image of this question.



Select the best answer from the following choices: What is the main role of this file for your app?

• A.This configuration file includes the https connection settings between your Android app and Firebase services.
• B.This file includes your user name and password for Firebase web site.
• C.This file role is to import the latest security updates from Firebase web site to app users.
• D.This file checks if the app user's device has Internet connection each time the app user starts it.

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Question No : 14
presentation [The image of this question includes a Flutter app interface run result as it appears on Android and on iOS emulators. When the app user taps the button on the app title bar, he/she will get a menu with some items.



Which of the following Flutter widgets is used to create this type of buttons ?

• A.PopupMenuButton Widget
• B.ButtonBar Widget
• C.OutlineButton Widget
• D.DropdownButton Widget

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Question No : 15
When you want to create a Flutter app, you need to configure a lot of widgets and change their format. You don't need to create everything from scratch. You can easily add the Scaffold class or widget to your app. This class implements the basic material design visual layout structure for your app.

• A.True
• B.False

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