Quiz | Croma Campus

How do you define a Fragment in Kotlin?

class MyFragment : Fragment()
class MyFragment extends Fragment()
class MyFragment inherits Fragment()
class MyFragment implements Fragment()

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How do you define a primary constructor in a Kotlin class?

constructor(name: String)
primary constructor(name: String)
init(name: String)
class ClassName(name: String)

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How do you create a read-only variable in Kotlin?

val name: String
var name: String
const name: String
let name: String

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Which keyword is used to define an interface in Kotlin?

interface
protocol
delegate
struct

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How do you create a sealed class in Kotlin?

sealed class MyClass
sealed abstract class MyClass
sealed MyClass
abstract sealed class MyClass

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Which library is commonly used for dependency injection in Kotlin for Android development?

Dagger
Hilt
Koin
Dagger-Hilt

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What is the correct way to get a reference to a TextView in Kotlin?

findViewById<TextView>(R.id.textView)
findViewById(R.id.textView)
findTextView(R.id.textView)
getView<TextView>(R.id.textView)

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How do you start a new activity in Android using Kotlin?

startActivity(Intent(this, NewActivity::class.java))
startActivity(NewActivity::class.java)
startNewActivity(Intent(this, NewActivity::class.java))
startNewActivity(NewActivity::class.java)

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How do you define a Kotlin class that extends an Android Activity?

class MainActivity : Activity()
class MainActivity extends Activity()
class MainActivity inherits Activity()
class MainActivity implements Activity()

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Which keyword is used to define a function in Kotlin?

def
fun
function
func

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What is the correct way to handle null safety in Kotlin?

if (variable != null)
variable?.let { }
variable != null ? ...
try { variable } catch {}

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Which keyword is used to indicate that a Kotlin class can be inherited from?

open
public
extendable
inheritable

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What is the correct way to declare a nullable variable in Kotlin?

var name: String?
var name = null
var name: String = null
var name = ""

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What is the correct way to declare a nullable variable in Kotlin?

var name: String?
var name = null
var name: String = null
var name = ""

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Which type in Kotlin represents a collection of key-value pairs?

List
Set
Map
Pair

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How do you create a singleton in Kotlin?

class Singleton { }
object Singleton { }
static class Singleton { }
object Singleton: Singleton { }

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Which annotation is used to bind a view in a Kotlin Android activity?

@BindView
@ViewBind
@Bind
@FindView

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Which function is used to start a new activity in Android using Kotlin?

startActivity(Intent(this, NewActivity::class.java))
startActivity(NewActivity::class.java)
startNewActivity(Intent(this, NewActivity::class.java))
startNewActivity(NewActivity::class.java)

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How do you declare an enum class in Kotlin?

enum class MyEnum
enum MyEnum
enum MyEnum()
class enum MyEnum

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Which of the following is the correct way to define a companion object in Kotlin?

companion object
companion class
companion val
companion const

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How do you create a coroutine in Kotlin?

coroutine { }
launch { }
async { }
runBlocking { }

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How do you create an instance of a class in Kotlin?

ClassName()
new ClassName()
ClassName
ClassName.new()

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What is the correct way to get a reference to a TextView in Kotlin?

findViewById<TextView>(R.id.textView)
findViewById(R.id.textView)
findTextView(R.id.textView)
getView<TextView>(R.id.textView)

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How do you declare a constant in Kotlin?

const val CONSTANT_NAME
val CONSTANT_NAME
const CONSTANT_NAME
let CONSTANT_NAME

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How do you handle an HTTP response in Kotlin using the Retrofit library?

response.body()
response.data()
response.get()
response.json()

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What is the correct way to create a sealed class in Kotlin?

sealed class MyClass
sealed abstract class MyClass
sealed MyClass
abstract sealed class MyClass

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Which of the following is the correct way to declare a variable in Kotlin?

var name: String
var name = String
var name: String = ""
var name = ""

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How do you initialize a lateinit variable in Kotlin?

lateinit var name: String
lateinit val name: String
var name: String = null
val name: String = null

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