The package name: - answer-uniquely identifies the app on the device
should be unique on the Google Play store
Once you publish the app with this package name that name should never be changed.
If you were to change the package name, existing users of your application will not see the app ...
MOBILE APP DEVELOPMENT QUESTIONS AND
ANSWERS
The package name: - answer-uniquely identifies the app on the device
should be unique on the Google Play store
Once you publish the app with this package name that name should never be changed.
If you were to change the package name, existing users of your application will not see the app as an
update
Which of the following is the correct output for this code:
var x= arrayOf(10, 20, 30)
println(x[1]) - answer-20
The IDE for iOS Development is called - answer-XCode
Which of the following is the correct code to print out Hello, Android ATC and then have the cursor go to
the next line. - answer-fun main(args: Array<String>){
println("Hello, Android ATC")
}
The language for iOS development is called: - answer-Swift
In Kotlin, which is the correct way to define the variable X as an immutable variable called X and assign it
the value of 1? - answer-val X=1
Which of the following will correctly create an application that will display "Hello World"? - answer-fun
main(args: Array<String>){
printIn("Hello World")
}
In Kotlin "Float" value range is: - answer-single-precision 32 bit floating point
In Kotlin Byte value range is: - answer-0 - 255
Which of the following are implicitly defined integer variables? - answer-var x=9
var y=9
The programming language we will be using for Android app development is called - answer-Kotlin
In Kotlin, Double value range is: - answer-double-precision 64 bit floating point
, Which of the following statements will correctly allow the user to enter an integer - answer-var z =
Integer.valueOf(readLine())
var z=readLine()!!.toInt()
The Android App package name should include: - answer-Two to three words separated by dots.
in Kotlin "Int" value range is: - answer--2,147,483,648 to 2,147,483,647
The operating system for iOS development is - answer-MacOS
In Kotlin, which of the following are true about characters: - answer-Data type is Char
Always enclosed in single quotes
Android Studio is built for Kotlin development; therefore, you can create a "New Kotlin Project" -
answer-False
Which of the following will compile clean (not produce an error). - answer-var price:Float = 5.2f
In Kotlin, "Long" value range is: - answer-64 bit signed
Kotlin code depends on what you write in the ______. This is the "starting point" of the application. It
calls out to other functions / classes / libraries. - answer-main function
To create an iOS app you have to go to the _______ template page to start your app - answer-iOS
Any method / function / block of code written outside the main function will be considered a definition
and will be called from the main function to do its work. - answer-True
Which of the following will add the variables x and y together and then assign the results to z? - answer-
z=x.plus(y)
z=x+y
The Kotlin plugin is bundled with Android Studio version ___ and later. - answer-3.0
The IDE used for developing Android Apps is called - answer-Android Studio
In Kotlin "Short" value range is: - answer--32768 to 32767
What is the output of the following code?
var x:Byte =10
var y:Byte=15
fun main(args: Array<String>){
var z=x+y
println("z = $z")
} - answer-z = 25
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