Basic Components of an Android Application II

Question 1

Describe the build.gradle files and their use

Answer 1

● There are two files with this name:
– One for the project, “Project: My_First_App,”
– One for the app module, “Module:
My_First_App.app.”
● Each module has its own build.gradle file.
● One should use each module’s build.gradle file to control how the gradle plugin builds an app.

Question 2

List all the subfolders in the res folder

Answer 2

Drawable
Menu
MipMap
Navigation
Values
XML

Question 3

Describe the Drawable subfolder

Answer 3

This contains graphic resources that can be drawn on a screen, eg, app icons, logos, game graphics, etc.
Apart from xml files, it can also contain bitmap files (PNG, JPEG,
or GIF) and other graphic formats.

Question 4

Describe the Menu subfolder

Answer 4

This contains menu resources, which can define an application menu (Options Menu, Context Menu, or submenu) that can be inflated with MenuInflater

Question 5

Describe the Mipmap subfolder

Answer 5

This subfolder specifically contains mipmap
drawables that are used as app/launcher icons.

Question 6

Describe the Xml subfolder

Answer 6

This is for miscellaneous XML files that configure application components. For example, an XML file that defines a PreferenceScreen,
AppWidgetProviderInfo, or Searchability Metadata.

Question 7

Describe the Navigation subfolder

Answer 7

This subfolder contains navigation components to help implement navigation from simple button clicks to more complex navigation patterns

Question 8

Describe the values subfolder

Answer 8

This is used to store the values for the resources that are used in many Android projects to include features of color, styles, dimensions etc.

Question 9

What are the options available for testing applications

Answer 9

– Virtual devices (emulators) – Android Virtual Devices (avds)*resource intensive

– Physical devices (actual phones)

– *Third party emulators

Question 10

What is the procedure for creating an AVD

Answer 10

– Go to tools – Device Manager – Create Device
– Choose the Phone category, then choose a desired device
– Select a system image (Android API)
– Verify configurations
– Finish

Question 11

What is the procedure for USB debugging

Answer 11

– Ensure you have a USB cable that can communicate data
– Enable the developer mode
– Go to Developer options, locate USB Debugging and enable this option.
– Allow the security verification(s) on your device to allow access
– The device will now be identified on Android Studio as an option (Available devices) .

Question 12

What is the procedure for wireless debugging

Answer 12

– Ensure you that both your devices are connected to the same Wi-Fi.
– Enable the developer mode
– Go to Developer options, locate Wireless Debugging and enable this option.
– Allow the security verification(s) on your device to allow access
– Click on the enabled Wireless debugging and select either to pair device with QR
code
– Under Available devices, select Pair Devices using Wi-Fi, then scan the QR code or
use the pairing code to connect.

Question 13

Example of third-party emulators

Answer 13

Bluestacks, Nox, MeMu