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Questions and Answers
Which statement accurately describes Android?
Which statement accurately describes Android?
- Android is exclusively available for iOS devices.
- Android is a hardware device manufactured by Google.
- Android is an open-source operating system based on the Linux kernel. (correct)
- Android is a programming language used to build mobile apps.
What was the significant event that occurred on November 5, 2007?
What was the significant event that occurred on November 5, 2007?
- Google released the beta version of the Android operating system. (correct)
- Google released the final version of Android.
- Android SDK was introduced.
- The first Android mobile was publicly released.
What distinguishes a native app from a hybrid app?
What distinguishes a native app from a hybrid app?
- Native apps must be distributed via web browsers.
- Native apps can only run on one operating system, whereas hybrid apps can run on multiple. (correct)
- Native apps are limited to usage on iOS devices only.
- Native apps rely exclusively on web technologies.
Which development languages are typically used for building Android native apps?
Which development languages are typically used for building Android native apps?
What is the main characteristic of a web app?
What is the main characteristic of a web app?
Which of the following is a hybrid app development environment?
Which of the following is a hybrid app development environment?
Which type of app requires different versions for Android and iOS?
Which type of app requires different versions for Android and iOS?
What does the acronym OHA stand for in relation to Android?
What does the acronym OHA stand for in relation to Android?
What is the primary purpose of the AndroidManifest.xml file in an Android app?
What is the primary purpose of the AndroidManifest.xml file in an Android app?
Where should the layout XML files be located in an Android project?
Where should the layout XML files be located in an Android project?
How is a color resource referenced in Java for use in an application?
How is a color resource referenced in Java for use in an application?
What benefit does using a strings XML file provide to developers?
What benefit does using a strings XML file provide to developers?
Which of the following statements accurately describes the styles XML file?
Which of the following statements accurately describes the styles XML file?
Which file location is appropriate for defining color resources in an Android app?
Which file location is appropriate for defining color resources in an Android app?
What is the format of resource references for strings in XML layout files?
What is the format of resource references for strings in XML layout files?
In which location is the Android SDK included when installing Android Studio?
In which location is the Android SDK included when installing Android Studio?
Which of the following is NOT typically defined in the AndroidManifest.xml file?
Which of the following is NOT typically defined in the AndroidManifest.xml file?
How does defining styles in XML benefit the development of Android applications?
How does defining styles in XML benefit the development of Android applications?
Flashcards
AndroidManifest.xml
AndroidManifest.xml
A file that defines essential information about your Android app, such as the package name, activities, permissions, etc.
Layout XML file
Layout XML file
A layout resource defines the structure of the user interface (UI) in an Activity or a UI component.
Strings XML file
Strings XML file
A single string that can be referenced from the application or other resource files. It replaces hard-coded strings for better reusability.
Styles XML file
Styles XML file
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Color XML file
Color XML file
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What is JDK?
What is JDK?
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What is Android Studio?
What is Android Studio?
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What is Android SDK?
What is Android SDK?
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How do you reference a layout file?
How do you reference a layout file?
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How do you reference a string resource?
How do you reference a string resource?
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What is Android?
What is Android?
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What are Native Apps?
What are Native Apps?
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What are Hybrid Apps?
What are Hybrid Apps?
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What are Web Apps?
What are Web Apps?
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What is the Android SDK?
What is the Android SDK?
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Who created Android and how did it evolve?
Who created Android and how did it evolve?
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What is the Open Handset Alliance (OHA)?
What is the Open Handset Alliance (OHA)?
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What programming languages are used to develop Android Apps?
What programming languages are used to develop Android Apps?
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Study Notes
Android Development Overview
- Android is an open-source operating system based on the Linux kernel, developed by Android Inc. and later acquired by Google.
- It's not a phone, application, or programming language, but a framework for building Android apps using languages like Java/Kotlin and XML.
- The Open Handset Alliance (OHA) consortium developed Android, commercially sponsored by Google.
- Android's development began in 2003, with Google acquiring Android Inc. in 2005.
- The beta version of Android was released in November 2007, followed by the SDK in November 2007 and the first Android mobile release in October 2008 (Android 1.0).
Mobile App Types
- Mobile apps are categorized into Native, Hybrid, and Web apps.
- Native apps: Designed for and operate exclusively on a single mobile operating system (e.g., Android). They need separate development for different platforms (Android, iOS). Distribution is through app stores.
- Hybrid apps: Function across various operating systems, using tools like Ionic, React Native, or Xamarin. Distribution is through app stores.
- Web apps: Function within web browsers and operate like websites. They cannot be distributed through app stores.
Android Development Environment Setup
- Java Development Kit (JDK): Essential for Android app development. Download from Oracle's website.
- Android Studio: An integrated development environment (IDE) providing Java, and Android SDKs. Download from Google's developer site. This combination simplifies the development process.
Key Android Development Files
- AndroidManifest.xml: A crucial file defining essential application metadata (package name, activities, permissions) for the Android build tools and operating system. Located at the root of the project.
- Layout XML file: Defines user interface (UI) architecture for activities and UI components (located in
<project root>/res/layout). References to Layout XML file attributes are made usingR.layout.layout_filename, (Java) and@layout/layout_filename(XML). - Strings XML file: Used to manage and replace hard-coded strings, enhancing code reusability. Stored in
<project root>/res/values/strings.xml, and referenced usingR.string.string_name(Java) and@string/string_name(XML). - Styles XML file: Contains UI format and appearance definitions. App or activity styles can be defined for single views or the entire app. Stored in
<project root>/res/values/styles.xml, and referenced using@style/styles_name(XML) - Colors XML file: Used to define color values, located in
<project root>/res/values/colors.xml. Referenced usingR.color.color_name(Java) and@color/color_name(XML).
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Description
Test your knowledge on the fundamentals of Android development. This quiz covers the history of Android, its framework, and the different types of mobile applications. Challenge yourself and see how well you understand the concepts behind Android app creation.
