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Questions and Answers

What is located on top of Native libraries and Android runtime?

  • AndroidManifest.xml
  • Android Applications
  • Linux Kernel
  • Android Framework (correct)

    • What is an Android component?

  • A piece of code with a well defined life cycle (correct)
  • A single screen representation
  • A service that runs in the background
  • A UI element such as button, label, text field etc.

    • What is the purpose of an Intent in Android?

  • To invoke components (correct)
  • To handle user input
  • To define the UI of an application
  • To store data in an application

    • What is a View in Android?

    <p>A UI element such as button, label, text field etc.</p> Signup and view all the answers

    What is an Activity in Android?

    <p>A single screen representation</p> Signup and view all the answers

    What are the core building blocks of Android?

    <p>Activities, Views, Intents, Services, Content Providers, Fragments, AndroidManifest.xml</p> Signup and view all the answers

    What is used to display a list of contacts in Android?

    <p>Intent</p> Signup and view all the answers

    What is used to start a service in Android?

    <p>Intent</p> Signup and view all the answers

    What is the minimum RAM required to run Android Studio?

    <p>4 GB</p> Signup and view all the answers

    What is the recommended disk space for Android Studio?

    <p>4 GB</p> Signup and view all the answers

    What is the minimum screen resolution required to run Android Studio?

    <p>1280 x 800</p> Signup and view all the answers

    Where can you download the Android Studio executable or zip file from?

    <p>Android Studio website</p> Signup and view all the answers

    What do you need to do after clicking the download button?

    <p>Save the file</p> Signup and view all the answers

    What happens after the download is complete?

    <p>You need to run the file from the downloads</p> Signup and view all the answers

    What do you need to do in the prompt box that appears after running the file?

    <p>Click on next</p> Signup and view all the answers

    What do you need to do after choosing a path for installation?

    <p>Click on next</p> Signup and view all the answers

    What is the main purpose of a Content Provider in Android?

    <p>To share data between applications</p> Signup and view all the answers

    What can be used to test an Android application without a real device?

    <p>Android Emulator</p> Signup and view all the answers

    What is an Android Virtual Device (AVD)?

    <p>An emulator that represents a specific Android device</p> Signup and view all the answers

    What is the purpose of the AndroidManifest.xml file?

    <p>To contain information about activities, content providers, and permissions</p> Signup and view all the answers

    What can be displayed on the screen at the same time in an Android activity?

    <p>One or more fragments</p> Signup and view all the answers

    What is a characteristic of a local service?

    <p>It can be accessed from within the application</p> Signup and view all the answers

    What is an advantage of testing Android applications on an emulator?

    <p>It can be faster and easier than testing on a real device</p> Signup and view all the answers

    What is simulated by the Android emulator?

    <p>Incoming phone calls, text messages, location, network speeds, and rotation</p> Signup and view all the answers

    What happens when you click the 'Finish' button in Android Studio setup?

    <p>It completes the installation of Android Studio</p> Signup and view all the answers

    What is the purpose of the 'Don't import Settings' option?

    <p>To avoid importing previous settings</p> Signup and view all the answers

    What is displayed in Figure 66?

    <p>The available SDK components</p> Signup and view all the answers

    What is the next step after clicking the 'Next' button in Figure 69?

    <p>Downloading the SDK components</p> Signup and view all the answers

    What is the name of the light theme in Android Studio?

    <p>IntelliJ</p> Signup and view all the answers

    What is the purpose of Step 7 in the installation process?

    <p>To redirect to the Welcome dialog box</p> Signup and view all the answers

    What happens after clicking the 'OK' button in Figure 65?

    <p>It starts the Android Studio</p> Signup and view all the answers

    What is the name of the dark theme in Android Studio?

    <p>Darcula</p> Signup and view all the answers

    Where can you find the mip-map folder?

    <p>Project folder -&gt; app -&gt; source -&gt; main -&gt; res</p> Signup and view all the answers

    What properties can be accessed for formatting a TextView?

    <p>ID, Text, Text appearance, Text color, Text Size, Font Family, Text Style, Layout height and Width, Gravity, Padding, and Background</p> Signup and view all the answers

    How do you show a Toast message in an Android app?

    <p>Using a Toast.makeText method</p> Signup and view all the answers

    What is the purpose of setPositiveButton in an AlertDialog?

    <p>To set a positive button for the dialog</p> Signup and view all the answers

    How do you open a second activity with post values?

    <p>Using an Intent with putExtra method</p> Signup and view all the answers

    Where can you specify the name of your icon file?

    <p>In the menifest file</p> Signup and view all the answers

    What is used to handle a click event of a button?

    <p>Onclick property</p> Signup and view all the answers

    What is the purpose of the ALPHA attribute in a TextView?

    <p>To set the transparency</p> Signup and view all the answers

    What is the nickname of Andy Rubin, given by his coworkers?

    <p>Android</p> Signup and view all the answers

    What was Android originally intended for?

    <p>Cameras</p> Signup and view all the answers

    In which year did Google announce the development of Android OS?

    <p>2007</p> Signup and view all the answers

    What is the heart of Android architecture?

    <p>Linux kernel</p> Signup and view all the answers

    What is responsible for running Android applications?

    <p>DVM (Dalvik Virtual Machine)</p> Signup and view all the answers

    What is the purpose of the WebKit library in Android?

    <p>Browser support</p> Signup and view all the answers

    What is the category that includes Linux kernel in the Android software stack?

    <p>Linux kernel</p> Signup and view all the answers

    What is the purpose of the SQLite library in Android?

    <p>Database support</p> Signup and view all the answers

    What is the Dalvik Virtual Machine optimized for?

    <p>Mobile devices</p> Signup and view all the answers

    What is Android Studio based on?

    <p>JetBrains' IntelliJ IDEA software</p> Signup and view all the answers

    What is one of the features of Android Studio?

    <p>A fast and feature-rich emulator</p> Signup and view all the answers

    What configurations come pre-defined with the Android emulator?

    <p>Several Android phones, Wear OS, tablet, and Android TV devices</p> Signup and view all the answers

    What is the purpose of the Apply Changes feature in Android Studio?

    <p>To push code and resource changes to the running app without restarting the app</p> Signup and view all the answers

    What type of build system does Android Studio provide?

    <p>A flexible Gradle-based build system</p> Signup and view all the answers

    What integration does Android Studio provide for?

    <p>Google Cloud Platform</p> Signup and view all the answers

    What type of support does Android Studio provide for native development?

    <p>Support for C++ and NDK</p> Signup and view all the answers

    What is the next step after configuring Android Studio?

    <p>Click on the Finish button to launch it</p> Signup and view all the answers

    What is the main purpose of the Android framework?

    <p>To provide a lot of classes and interfaces for Android application development</p> Signup and view all the answers

    Where can you find the apk file of your app?

    <p>Project folder-&gt;app-&gt;build-&gt;output-&gt;apk</p> Signup and view all the answers

    What should you do before installing the app on your phone?

    <p>Allow install app from unknown source option</p> Signup and view all the answers

    What is an example of an Android component?

    <p>Activity</p> Signup and view all the answers

    What is an example of something that can be started using an intent?

    <p>All of the above</p> Signup and view all the answers

    What is the purpose of building the project?

    <p>To generate the apk file for the app</p> Signup and view all the answers

    What is a view in Android?

    <p>A UI element such as a button or label</p> Signup and view all the answers

    What is generated after building the project?

    <p>The apk file</p> Signup and view all the answers

    What is the purpose of the AndroidManifest.xml file?

    <p>To declare the components of an Android app</p> Signup and view all the answers

    Where should you copy the apk file?

    <p>To your phone</p> Signup and view all the answers

    What is the relationship between the Android framework and applications?

    <p>Applications are built on top of the Android framework</p> Signup and view all the answers

    What is the purpose of the Android Studio project structure?

    <p>To organize the code files</p> Signup and view all the answers

    What is the purpose of content providers in Android?

    <p>To provide access to data</p> Signup and view all the answers

    What is the final step in building and testing the app?

    <p>Install and run the app</p> Signup and view all the answers

    What is the relationship between the Android runtime and native libraries?

    <p>The Android runtime uses native libraries</p> Signup and view all the answers

    What happens when you click the 'Finish' button in the Android Studio setup?

    <p>It will start the Android Studio</p> Signup and view all the answers

    What is the purpose of choosing the 'Don't import Settings' option?

    <p>To avoid importing previous settings</p> Signup and view all the answers

    What is displayed in Figure 67?

    <p>The Welcome dialog box</p> Signup and view all the answers

    What theme is also known as the IntelliJ theme?

    <p>Light theme</p> Signup and view all the answers

    What happens after clicking the 'Next' button in Figure 69?

    <p>It will ask you to choose a theme</p> Signup and view all the answers

    What is the name of the dark theme in Android Studio?

    <p>Darcula theme</p> Signup and view all the answers

    What happens in Step 6 of the Android Studio setup?

    <p>It will find the available SDK components</p> Signup and view all the answers

    What is the final step in the Android Studio setup process?

    <p>Clicking the 'Finish' button</p> Signup and view all the answers

    What is the minimum RAM required to run Android Studio?

    <p>2 GB</p> Signup and view all the answers

    What is the minimum disk space required to run Android Studio?

    <p>4 GB</p> Signup and view all the answers

    What is the minimum screen resolution required to run Android Studio?

    <p>1280 x 800</p> Signup and view all the answers

    Where can you find the Android Studio executable or zip file?

    <p>Android Studio Website</p> Signup and view all the answers

    What happens after clicking the 'I have read and agree with the above terms and conditions' checkbox?

    <p>The file starts downloading</p> Signup and view all the answers

    What is the primary operating system used in Android devices?

    <p>Linux-based</p> Signup and view all the answers

    Who developed the Android operating system?

    <p>Google and later the Open Handset Alliance (OHA)</p> Signup and view all the answers

    What do you need to do after the download is complete?

    <p>Open the file from downloads and run it</p> Signup and view all the answers

    What is the main goal of the Android project?

    <p>To create a successful real-world product that improves the mobile experience for end users</p> Signup and view all the answers

    What do you need to do in the prompt box that appears after running the file?

    <p>Click next</p> Signup and view all the answers

    In which year did Andy Rubin found Android Incorporation?

    <p>October 2003</p> Signup and view all the answers

    What happens after choosing a path for installation?

    <p>The installation starts automatically</p> Signup and view all the answers

    What is Android currently used in?

    <p>Mobiles, tablets, televisions etc.</p> Signup and view all the answers

    What language is mainly used to write Android code?

    <p>Java</p> Signup and view all the answers

    When did Google acquire Android Incorporation?

    <p>17th August 2005</p> Signup and view all the answers

    What are the code names of Android ranges from?

    <p>A to J</p> Signup and view all the answers

    What types of devices does the Android emulator come with predefined configurations for?

    <p>Android phones, Wear OS, tablets, and Android TV devices</p> Signup and view all the answers

    What is the main optimization goal of the Dalvik Virtual Machine (DVM)?

    <p>Memory, battery life, and performance</p> Signup and view all the answers

    What is a key feature of Android Studio that enhances productivity?

    <p>Apply Changes to push code and resource changes to the running app</p> Signup and view all the answers

    What is the basis of Android Studio?

    <p>JetBrains' IntelliJ IDEA software</p> Signup and view all the answers

    What is a benefit of using the Android emulator?

    <p>Testing is faster and more efficient</p> Signup and view all the answers

    What is a feature of the Android Studio build system?

    <p>Gradle-based build system</p> Signup and view all the answers

    What is a benefit of using GitHub and Code template integration in Android Studio?

    <p>It helps to develop common app features</p> Signup and view all the answers

    What is a feature of the Android Studio testing tools?

    <p>Extensive testing tools and frameworks</p> Signup and view all the answers

    What is the purpose of setId in a TextView?

    <p>To set the ID of the TextView</p> Signup and view all the answers

    What is the purpose of setOnClickListener in a button?

    <p>To handle the click event of the button</p> Signup and view all the answers

    What is the purpose of Toast.makeText?

    <p>To show a toast message</p> Signup and view all the answers

    Where can you find the mip-map folder?

    <p>In the res folder</p> Signup and view all the answers

    What is the purpose of onCreate method in an activity?

    <p>To initialize the activity</p> Signup and view all the answers

    What is the purpose of setPositiveButton in an AlertDialog?

    <p>To set the positive button of the AlertDialog</p> Signup and view all the answers

    What is the purpose of findViewById method?

    <p>To find a View by its ID</p> Signup and view all the answers

    How do you open a second activity with post values?

    <p>Using an Intent and startActivity method</p> Signup and view all the answers

    What is the primary function of the Linux kernel in the Android architecture?

    <p>To manage device drivers, power management, memory management, device management, and resource access</p> Signup and view all the answers

    What is the purpose of the Native libraries in the Android architecture?

    <p>To support various functionalities such as browser, database, font, media, etc.</p> Signup and view all the answers

    What is the Dalvik Virtual Machine (DVM) optimized for?

    <p>For mobile devices</p> Signup and view all the answers

    What is the nickname of Andy Rubin, given by his coworkers?

    <p>Android</p> Signup and view all the answers

    What was Android originally intended for?

    <p>Camera</p> Signup and view all the answers

    In which year did Google announce the development of Android OS?

    <p>2007</p> Signup and view all the answers

    What is the category that includes Linux kernel in the Android software stack?

    <p>Linux kernel</p> Signup and view all the answers

    What is the purpose of the SQLite library in the Android architecture?

    <p>To provide database support</p> Signup and view all the answers

    What is the primary purpose of a Content Provider in Android?

    <p>To share data between applications</p> Signup and view all the answers

    What can be used to test an Android application without a physical device?

    <p>Android Emulator</p> Signup and view all the answers

    What type of service is accessed remotely from other applications running on the same device?

    <p>Remote Service</p> Signup and view all the answers

    What contains information about activities, content providers, and permissions?

    <p>AndroidManifest.xml</p> Signup and view all the answers

    What is a Fragment in Android?

    <p>A part of an activity</p> Signup and view all the answers

    What is an advantage of testing Android applications on an emulator?

    <p>It is faster and easier than testing on a real device</p> Signup and view all the answers

    What is simulated by the Android emulator?

    <p>Incoming phone calls, text messages, location, network speeds, and more</p> Signup and view all the answers

    What is the purpose of an Android Virtual Device (AVD)?

    <p>To test Android applications without a real device</p> Signup and view all the answers

    What is the next step after the Android Studio has been successfully configured?

    <p>Click on the Start a new Android Studio project button</p> Signup and view all the answers

    Where can you find the .apk file after building the project?

    <p>Project folder-&gt;app-&gt;build-&gt;output-&gt;apk</p> Signup and view all the answers

    What do you need to allow on your phone to install an app from unknown source?

    <p>Install app from unknown source option</p> Signup and view all the answers

    What is the purpose of building and testing the app?

    <p>To ensure the app works as expected on a physical device</p> Signup and view all the answers

    What do you need to do after copying the .apk file to your phone?

    <p>Install and run the app</p> Signup and view all the answers

    What is the purpose of the output folder in the project structure?

    <p>To store the built .apk file of the app</p> Signup and view all the answers

    What is the primary optimization focus of the Dalvik Virtual Machine (DVM)?

    <p>Memory, battery life, and performance</p> Signup and view all the answers

    What do you need to do before installing the app on your phone?

    <p>Allow install app from unknown source option</p> Signup and view all the answers

    What is the purpose of the Android emulator?

    <p>To simulate Android devices for testing and development</p> Signup and view all the answers

    What is the purpose of the build step in the Android app development process?

    <p>To compile and package the app into an .apk file</p> Signup and view all the answers

    What is Android Studio based on?

    <p>IntelliJ IDEA</p> Signup and view all the answers

    What is a key feature of the Android Studio environment?

    <p>A flexible Gradle-based build system</p> Signup and view all the answers

    What is a benefit of using the Android emulator?

    <p>It simulates Android devices for testing and development</p> Signup and view all the answers

    What is a feature of the Android Studio environment that helps with productivity?

    <p>Apply Changes to push code and resource changes to the running app without restarting</p> Signup and view all the answers

    What is an advantage of using Android Studio?

    <p>It provides a blended environment for developing for all Android devices</p> Signup and view all the answers

    What is a supported feature in Android Studio?

    <p>GitHub and Code template integration</p> Signup and view all the answers

    What is the main purpose of the Linux kernel in Android architecture?

    <p>To manage memory and resource access</p> Signup and view all the answers

    Which library is responsible for font support in Android?

    <p>FreeType</p> Signup and view all the answers

    What is the main purpose of the Android Runtime in Android architecture?

    <p>To run Android applications</p> Signup and view all the answers

    What is the Dalvik Virtual Machine (DVM) optimized for?

    <p>Mobile devices</p> Signup and view all the answers

    What is the category that includes Native libraries in the Android software stack?

    <p>Middleware</p> Signup and view all the answers

    What was Android originally intended for?

    <p>Cameras</p> Signup and view all the answers

    What is the nickname given to Andy Rubin by his coworkers?

    <p>Android</p> Signup and view all the answers

    What is the purpose of the SQLite library in Android?

    <p>For database management</p> Signup and view all the answers

    What is the purpose of the setContentView method in the onCreate method?

    <p>To set the layout of the activity</p> Signup and view all the answers

    What is retrieved from the intent extras in the onCreate method?

    <p>A string value</p> Signup and view all the answers

    What is used to display the retrieved string value in the activity?

    <p>TextView</p> Signup and view all the answers

    How do you make an activity a launcher activity?

    <p>By pasting code in the Manifest file</p> Signup and view all the answers

    What is the purpose of the getIntent().getExtras() method?

    <p>To retrieve data from the previous activity</p> Signup and view all the answers

    What is the type of the extras object?

    <p>Bundle</p> Signup and view all the answers

    What is the purpose of the findViewById method?

    <p>To find a view by its ID</p> Signup and view all the answers

    What is displayed using the Toast.makeText method?

    <p>A toast message</p> Signup and view all the answers

    What was the original intention of Android before it shifted to smartphones?

    <p>For cameras only</p> Signup and view all the answers

    What is the name of the nickname given to Andy Rubin by his coworkers?

    <p>Android</p> Signup and view all the answers

    What is the purpose of the Linux kernel in Android architecture?

    <p>To manage device drivers, power management, memory management, device management, and resource access</p> Signup and view all the answers

    What is the purpose of the WebKit library in Android?

    <p>To provide browser support</p> Signup and view all the answers

    What is the category that includes Linux kernel in the Android software stack?

    <p>Linux kernel</p> Signup and view all the answers

    What is the purpose of the SQLite library in Android?

    <p>To provide database support</p> Signup and view all the answers

    What is the Dalvik Virtual Machine optimized for?

    <p>Mobile devices</p> Signup and view all the answers

    In which year did Google announce the development of Android OS?

    <p>2007</p> Signup and view all the answers

    What is the method used to get the extras from an Intent in the given code?

    <p>getIntent().getExtras()</p> Signup and view all the answers

    What is the purpose of the setContentView(R.layout.displayinfo) method?

    <p>To set the layout of the activity</p> Signup and view all the answers

    What is the purpose of the findViewById method?

    <p>To find a view by its ID</p> Signup and view all the answers

    How do you make an activity a launcher activity?

    <p>By pasting the code in the Manifest file</p> Signup and view all the answers

    What is the variable 'val1' used for in the given code?

    <p>To set the text of a TextView</p> Signup and view all the answers

    What is the purpose of the Toast.makeText method?

    <p>To display a message on the screen</p> Signup and view all the answers

    What is the method used to set the text of a TextView?

    <p>setText()</p> Signup and view all the answers

    What is the purpose of the Bundle object 'extras'?

    <p>To get the Intent extras</p> Signup and view all the answers

    What happens when the 'Finish' button is clicked in Android Studio setup?

    <p>It will start the Android Studio.</p> Signup and view all the answers

    What is the purpose of choosing 'Don't import Settings' option?

    <p>To avoid importing previous settings.</p> Signup and view all the answers

    What is displayed in the figure after clicking the 'Next' button in Figure 69?

    <p>The theme selection.</p> Signup and view all the answers

    What is the name of the theme that is also known as IntelliJ theme?

    <p>Light theme.</p> Signup and view all the answers

    What happens after clicking the 'OK' button in Figure 65?

    <p>The Android Studio starts.</p> Signup and view all the answers

    What is the purpose of Step 7 in the installation process?

    <p>To redirect to the Welcome dialog box.</p> Signup and view all the answers

    What is displayed in Figure 66?

    <p>The available SDK components.</p> Signup and view all the answers

    What is the primary purpose of the Dalvik Virtual Machine (DVM)?

    <p>To optimize the virtual machine for memory, battery life, and performance</p> Signup and view all the answers

    What is the name of the theme that is also known as Darcula theme?

    <p>Dark theme.</p> Signup and view all the answers

    What is the main feature of the Android emulator that comes with Android Studio?

    <p>It comes with predefined configurations for several Android devices</p> Signup and view all the answers

    What is a key feature of Android Studio that enhances productivity?

    <p>Apply Changes to push code and resource changes to the running app without restarting</p> Signup and view all the answers

    What is the official Integrated Development Environment (IDE) for Android app development?

    <p>Android Studio</p> Signup and view all the answers

    What is the primary advantage of using the Android emulator for testing Android applications?

    <p>It simulates various Android devices and configurations</p> Signup and view all the answers

    What is the purpose of the GitHub and Code template integration in Android Studio?

    <p>To assist in developing common app features and importing sample code</p> Signup and view all the answers

    What is the primary advantage of using Android Studio for Android app development?

    <p>It provides a blended environment for developing Android apps</p> Signup and view all the answers

    What is the primary benefit of using the Apply Changes feature in Android Studio?

    <p>It pushes code and resource changes to the running app without restarting</p> Signup and view all the answers

    What happens after building the project in Android Studio?

    <p>The .apk file is generated in the Project folder</p> Signup and view all the answers

    What is the recommended step after copying the .apk file to your phone?

    <p>Allow install app from unknown source option</p> Signup and view all the answers

    What is the purpose of Step 9 in the Android Studio setup process?

    <p>To start a new Android Studio project</p> Signup and view all the answers

    Where can you find the .apk file after building the project?

    <p>Project folder-&gt;app-&gt;build-&gt;output-&gt;apk</p> Signup and view all the answers

    What is the next step after clicking the 'Finish' button in Android Studio setup?

    <p>Launch Android Studio</p> Signup and view all the answers

    What is the purpose of the Android project structure?

    <p>To organize the project files</p> Signup and view all the answers

    What is the recommended step after building and testing the app?

    <p>Publish the app on the Google Play Store</p> Signup and view all the answers

    What is the purpose of Figure 73 in the Android Studio setup process?

    <p>To display the Android project structure</p> Signup and view all the answers

    Study Notes

    Android Framework

    • Android framework sits on top of native libraries and Android runtime
    • It includes Android APIs such as:
      • UI (User Interface)
      • Telephony
      • Resources
      • Locations
      • Content Providers (data)
      • Package managers
    • Provides a lot of classes and interfaces for Android application development

    Android Applications

    • Applications sit on top of Android framework
    • All applications use Android framework, which uses Android runtime and libraries
    • Android runtime and native libraries use Linux kernel

    Android Core Building Blocks

    • Android components have a well-defined life cycle
    • Core building blocks of Android include:
      • Activities
      • Views
      • Intents
      • Services
      • Content Providers
      • Fragments
      • AndroidManifest.xml

    Activity

    • An activity represents a single screen
    • It's like a Frame in AWT

    View

    • A view is a UI element, such as a button, label, or text field
    • Anything that can be seen on the screen is a view

    Intent

    • Intent is used to invoke components
    • It's mainly used to:
      • Start a service
      • Launch an activity
      • Display a web page
      • Display a list of contacts
      • Broadcast a message
      • Dial a phone call

    Service

    • A service is a background process that can run for a long time
    • There are two types of services: local and remote
    • Local service is accessed from within the application
    • Remote service is accessed remotely from other applications running on the same device

    Content Provider

    • Content providers are used to share data between applications

    Fragment

    • A fragment is like a part of an activity
    • An activity can display one or more fragments on the screen at the same time

    AndroidManifest.xml

    • It contains information about activities, content providers, permissions, etc.
    • It's like the web.xml file in Java EE

    Android Virtual Device (AVD)

    • It's used to test the Android application without the need for a mobile or tablet
    • It can be created in different configurations to emulate different types of real devices

    Android Emulator

    • The Android emulator is an Android Virtual Device (AVD) that represents a specific Android device
    • It can be used as a target device to execute and test the Android application on a PC
    • It provides almost all the functionality of a real device
    • It can simulate:
      • Incoming phone calls and text messages
      • Location of the device
      • Different network speeds
      • Rotation and other hardware sensors
    • It can access the Google Play store and more

    System Requirements

    • Microsoft Windows 7/8/10 (32-bit or 64-bit)
    • 4 GB RAM minimum, 8 GB RAM recommended (plus 1 GB for the Android Emulator)
    • 2 GB of available disk space minimum, 4 GB recommended (500 MB for IDE plus 1.5 GB for Android SDK and emulator system image)
    • 1280 x 800 minimum screen resolution

    Installation Guide

    • Step 1: Download the Android Studio executable or zip file
    • Step 2: Click on the Download Android Studio Button and agree to the terms and conditions
    • Step 3: After downloading, open the file and run it
    • Step 4: Choose a path for installation and hit next
    • Step 5: Click on next and then finish to complete the installation
    • Step 6: Choose whether to import previous settings or not
    • Step 7: Start the Android Studio and find the available SDK components
    • Step 8: Download the SDK components

    Creating the App Icon and Changing the Theme

    • Go to the Project folder->app->source->main->res
    • Navigate to the mip-map folder
    • Copy the icon
    • Go to the manifest file and specify the name of the icon file

    Creating Activity and Formatting the Text View

    • Add the TextView in a constraint layout and set the margin
    • Format the text view by accessing the properties of the label widget
    • Set:
      • ID
      • Text
      • Text appearance
      • Text color
      • Text size
      • Font family
      • Text style
      • Layout height and width as match parent with zero margin
      • Gravity to set alignment
      • Padding
      • Background
      • Alpha to set transparency

    Showing Toast Message

    • Use the Toast.makeText() method to show a toast message
    • Example: Toast.makeText(this,"This is Test Msg",Toast.LENGTH_SHORT).show();

    Handling the Click Event of a Button

    • Draw the button in an XML file and set an ID
    • Set the text of the button and set an event name like "Clickme" in the Onclick property option
    • Write the Java code to handle the click event
    • Example: public void clickme(View view) {...}

    Creating an Alert Dialog Box

    • Use the AlertDialog.Builder class to create an alert dialog box
    • Set the icon, title, and message of the dialog box
    • Set the positive and negative buttons
    • Example: public class MainActivity extends AppCompatActivity {...}

    Opening a Second Activity with Post Values

    • Use an Intent to open a second activity with post values
    • Example: Intent i = new Intent(getApplicationContext(),DisplayInfo.class); i.putExtra("value1",namestr); startActivity(i);

    Android History and Key Employees

    • Android Inc. was founded by Andy Rubin, Rich Miner, Chris White, and Nick Sears
    • Android was originally intended for cameras, but shifted to smartphones due to low market demand
    • Andy Rubin was nicknamed "Android" by his coworkers due to his love for robots
    • Google announced the development of Android OS in 2007
    • The first Android mobile was launched by HTC in 2008

    Android Architecture and Software Stack

    • The Android architecture is categorized into five parts:
      • Linux kernel
      • Native libraries (middleware)
      • Android Runtime
      • Application Framework
      • Applications
    • Linux kernel is responsible for device drivers, power management, memory management, device management, and resource access
    • Native libraries include WebKit, OpenGL, FreeType, SQLite, Media, and C runtime library (libc)
    • Android Runtime includes core libraries and DVM (Dalvik Virtual Machine), which is optimized for mobile devices
    • Android Framework provides Android API's such as UI, telephony, resources, locations, Content Providers, and package managers
    • Applications use Android Framework, which uses Android Runtime and native libraries, and Linux kernel

    Android Core Building Blocks

    • Android components have a well-defined life cycle, e.g., Activity, Receiver, Service, etc.
    • Core building blocks of Android include:
      • Activities (represent a single screen)
      • Views (UI elements, e.g., button, label, text field)
      • Intents (used to invoke components, e.g., start a service, launch an activity, display a web page)
      • Services
      • Content Providers
      • Fragments
      • AndroidManifest.xml

    Android Program Compilation (Dalvik Virtual Machine | DVM)

    • Dalvik Virtual Machine (DVM) is an Android virtual machine optimized for mobile devices
    • DVM optimizes for memory, battery life, and performance

    Installation of Android Studio

    • Android Studio is the official IDE for Android app development
    • Android Studio provides many features, including:
      • A blended environment for developing for all Android devices
      • Apply Changes to push code and resource changes to the running app without restarting
      • Flexible Gradle-based build system
      • Fast and feature-rich emulator
      • GitHub and Code template integration
      • Extensive testing tools and frameworks
      • C++ and NDK support
      • Built-in support for Google Cloud Platform

    Android Project Structure and Debugging

    • Android project structure includes:
      • Project folder
      • app folder
      • build folder
      • output folder
      • apk file
    • Debugging involves building the project, copying the.apk file to the phone, allowing installation from unknown sources, and installing and running the app

    Android App Development

    • Android is a complete set of software for mobile devices, including a Linux-based operating system, middleware, and key mobile applications.
    • It can be used in various devices such as mobiles, tablets, televisions, etc.

    What is Android

    • Android is a software package and Linux-based operating system for mobile devices such as tablet computers and smartphones.
    • It is developed by Google and later the OHA (Open Handset Alliance).
    • Java language is mainly used to write Android code, but other languages can also be used.

    History of Android

    • Android was founded in 2003 by Andy Rubin in Palo Alto, California, United States.
    • Google acquired Android in 2005.
    • The key employees of Android are Andy Rubin, Rich Miner, Chris White, and Nick Sears.
    • Android was initially intended for camera but shifted to smartphones later due to the low market for cameras.
    • Android is the nickname of Andy Rubin, given by his coworkers because of his love for robots.

    Android Architecture and Software Stack

    • Android architecture is categorized into five parts:
      • Linux kernel
      • Native libraries (middleware)
      • Android Runtime
      • Application Framework
      • Applications
    • Linux kernel is responsible for device drivers, power management, memory management, device management, and resource access.
    • Native libraries include WebKit, OpenGL, FreeType, SQLite, Media, and C runtime library (libc).
    • Android Runtime includes core libraries and DVM (Dalvik Virtual Machine), which is responsible for running Android applications.

    Android Program Compilation (Dalvik Virtual Machine | DVM)

    • DVM is an Android virtual machine optimized for mobile devices.
    • It optimizes the virtual machine for memory, battery life, and performance.

    Installation of Android Studio

    • Android Studio is the official IDE (Integrated Development Environment) for Android app development.
    • It is based on JetBrains' IntelliJ IDEA software.
    • System requirements for Android Studio include:
      • Microsoft Windows 7/8/10 (32-bit or 64-bit)
      • 4 GB RAM minimum, 8 GB RAM recommended
      • 2 GB of available disk space minimum, 4 GB recommended
      • 1280 x 800 minimum screen resolution

    Installation Guide

    • Step 1: Download Android Studio executable or zip file from the official website.
    • Step 2: Click on the "Download Android Studio" button.
    • Step 3: Open the file and run it.
    • Step 4: Install Android Studio and choose a path for installation.

    Creating the App Icon and Changing the Theme with No Action Bar

    • Go to the Project folder -> app -> source -> main -> res.
    • Navigate to the mip-map folder.
    • Copy the icon.
    • Go to the manifest file and specify the name of the icon file.

    Creating Activity and Formatting the Text View

    • Add the TextView in a constraint layout and set the margin.
    • Do the following formatting by accessing the properties of the label widget:
      • ID
      • Text
      • Text appearance
      • Text color
      • Text size
      • Font family
      • Text style
      • Layout height and width as match parent with zero margin
      • Gravity to set alignment
      • Padding
      • Background
      • Alpha to set transparency

    Show Toast Message

    • Use Toast.makeText() to show a toast message.
    • Example: Toast.makeText(this, "This is Test Msg", Toast.LENGTH_SHORT).show();

    Handle the Click Event of a Button

    • Draw the button in an XML file and set the ID of the button.
    • Set the text of the button and set an event name like "Clickme" in the Onclick property option.
    • Write Java code to handle the click event.

    Create Alert Dialog Box (Java Code)

    • Use the AlertDialog.Builder class to create an alert dialog box.
    • Example: new AlertDialog.Builder(this).setIcon(android.R.drawable.ic_dialog_alert).setTitle("Are you sure!?").setMessage("Do you definitely want to do this?").setPositiveButton("Yes", new DialogInterface.OnClickListener() {...}).setNegativeButton("No", null).show();

    Open Second Activity with Post Values

    • Use the Intent class to open a second activity with post values.
    • Example: Intent i = new Intent(getApplicationContext(), DisplayInfo.class); i.putExtra("value1", namestr); startActivity(i);

    Android History and Key Employees

    • Android Incorporation's key employees are Andy Rubin, Rich Miner, Chris White, and Nick Sears
    • Android was originally intended for cameras but shifted to smartphones due to low market demand
    • Android is a nickname given to Andy Rubin due to his love for robots
    • Google announced the development of the Android OS in 2007
    • HTC launched the first Android mobile in 2008

    Android Architecture and Software Stack

    • Android architecture is categorized into five parts:
      • Linux kernel
      • Native libraries (middleware)
      • Android Runtime
      • Application Framework
      • Applications
    • Linux kernel is responsible for device drivers, power management, memory management, device management, and resource access
    • Native libraries include WebKit, OpenGL, FreeType, SQLite, Media, and C runtime library (libc)

    Android Runtime

    • Android Runtime includes core libraries and DVM (Dalvik Virtual Machine)
    • DVM is responsible for running Android applications and is optimized for mobile devices, consuming less memory and providing fast performance

    Android Concept Definitions

    • Service: a background process that can run for a long time, with two types: local and remote
    • Content Provider: used to share data between applications
    • Fragment: a part of an activity, with an activity displaying one or more fragments on the screen at the same time
    • AndroidManifest.xml: contains information about activities, content providers, permissions, etc.

    Android Virtual Device (AVD) and Android Emulator

    • Android Virtual Device (AVD): used to test Android applications without a physical device, created in different configurations to emulate different real devices
    • Android Emulator: an AVD that represents a specific Android device, providing almost all the functionality of a real device

    Android Program Compilation (Dalvik Virtual Machine | DVM)

    • The Dalvik Virtual Machine (DVM) is an Android virtual machine optimized for mobile devices, optimizing for memory, battery life, and performance

    Installation of Android Studio

    • Android Studio is the official IDE for Android app development, based on JetBrains' IntelliJ IDEA software
    • Features of Android Studio include:
      • A blended environment for developing for all Android devices
      • Apply Changes to push code and resource changes to the running app without restarting
      • A flexible Gradle-based build system
      • A fast and feature-rich emulator
      • GitHub and Code template integration
      • Extensive testing tools and frameworks
      • C++ and NDK support
      • Built-in support for Google Cloud Platform

    Android Project Structure and Debugging

    • The Android project structure includes folders for app, build, output, and debugging

    Building and Testing the App

    • Build the project and go to the Project folder -> app -> build -> output -> apk
    • Copy the .apk file to your phone, allow installation from unknown sources, and install and run the app

    Android History

    • Android was originally intended for cameras but shifted to smartphones due to a low market for cameras.
    • Android is the nickname of Andy Rubin, given by his coworkers due to his love for robots.

    Key Employees

    • Andy Rubin, Rich Miner, Chris White, and Nick Sears are key employees of Android Incorporation.

    Android Architecture and Software Stack

    • Android architecture is categorized into five parts:
      • Linux kernel
      • Native libraries (middleware)
      • Android Runtime
      • Application Framework
      • Applications

    Linux Kernel

    • Linux kernel is the heart of Android architecture, responsible for device drivers, power management, memory management, device management, and resource access.

    Native Libraries

    • Native libraries include WebKit, OpenGL, FreeType, SQLite, Media, and C runtime library (libc), etc.
    • WebKit is responsible for browser support, SQLite is for database, FreeType is for font support, and Media is for playing and recording audio and video formats.

    Android Runtime

    • Android Runtime includes core libraries and the Dalvik Virtual Machine (DVM), which is responsible for running Android applications.
    • DVM is optimized for mobile devices, consuming less memory and providing fast performance.

    Dalvik Virtual Machine (DVM)

    • DVM is an Android virtual machine optimized for mobile devices, optimizing memory, battery life, and performance.

    Android Studio Installation

    • Android Studio is the official IDE (Integrated Development Environment) for Android app development, based on JetBrains' IntelliJ IDEA software.
    • Features of Android Studio include:
      • A blended environment for developing for all Android devices
      • Apply Changes to push code and resource changes to the running app without restarting the app
      • A flexible Gradle-based build system
      • A fast and feature-rich emulator
      • GitHub and Code template integration to assist in developing common app features and importing sample code
      • Extensive testing tools and frameworks
      • C++ and NDK support
      • Built-in support for Google Cloud Platform, making it easy to integrate Google Cloud Messaging and App Engine

    Installing Android Studio

    • Steps to install Android Studio:
      • Download and install Android Studio
      • Choose the "Don't import Settings" option
      • Click the OK button
      • Wait for the Android Studio to start
      • Choose the theme (Light or Dark)
      • Click on the Next button
      • Download the SDK components
      • Click on the Finish button to launch Android Studio

    Android Project Structure and Debugging

    • The Android project structure includes:
      • Project folder
      • app folder
      • build folder
      • output folder
      • apk file

    Building and Testing the App

    • Steps to build and test the app:
      • Build the project
      • Go to the Project folder -> app -> build -> output -> apk
      • Copy the .apk file to your phone
      • Allow install app from unknown source option
      • Install and run the app

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    Related Documents

    ch10.pdf

    Description

    This quiz covers the Android framework, which sits on top of native libraries and Android runtime, and includes Android APIs such as UI, telephony, resources, locations, and Content Providers. Test your knowledge of Android app development!

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