Which of the following files has the correct name for a layout design file of an activity in an Android app?

1. A. Gradle.sql
2. B. MainActivity,java or MainActivity.kt
3. C. Sample.class
4. D. ctivity_ main.xml

Correct Answer: D

Assume you were given the code of an Android app that include a Google Map. When you checked the apps code, you found the following: var locationMangaer: LocationManager?=null var locationUstener: LocationListener?=null Which of the following is true about this app?

1. A. This app is just lo show locations on Google map.
2. B. LocationListener is used to give the app user to change the Google map database.
3. C. This app captures a user s location (coordinates) and uses N in its work Row.
4. D. These classes are not related to Google map.

Correct Answer: A

Which of the below choices is the best answer to fill the empty space in the following sentence? If you want to give all text widgets in an app the same format such as font color, font size, and font family, you should add the style attribute to the TextView XML tags in layout file and set the attribute value to the same style name. You should define that style by adding a new style tag "style name-style_name" inside...............................

1. A. AadroiddManifest-xml file
2. B. activity_main.xml file
3. C. stytes.xml file
4. D. MainActivity.java or MainActivity.kt file

Correct Answer: C

Which of the following choices is the best answer to fill the empty space in the following sentence? Adding a new color to the colors.xml file in Android Studio (/res/values/colors.xml) helps the app developers to use this new color as attribute value for the ................attribute in all these app layouts.

1. A. Java:textcolor
2. B. color:textformat
3. C. android:textcolor
4. D. kotlin:textcolor

Correct Answer: C

Which of the following Android Studio folders includes drawable files for different launcher icon densities?

1. A. Values
2. B. Drawable
3. C. layout
4. D. Mipmap

Correct Answer: D