Modularization in Android Kotlin - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a Kotlin function inside a module.

Android Kotlin

fun greet() : String {
    return [1]
}

Drag options to blanks, or click blank then click option'

A"Hello from module!"

Bprintln("Hello from module!")

CHello from module!

Dreturn "Hello from module!"

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting quotes around the string

Using println instead of returning a string

The function must return a String literal, so the text must be in quotes.

2fill in blank

medium

Complete the code to import a function from another module.

Android Kotlin

import com.example.moduleA.[1]

fun main() {
    println(greet())
}

Drag options to blanks, or click blank then click option'

AMainActivity

Bgreet

CModuleA

Dgreeting

Attempts:

3 left

💡 Hint

Common Mistakes

Importing the module name instead of the function

Using wrong function names

You import the function name exactly to use it in your code.

3fill in blank

hard

Fix the error in the module dependency declaration in build.gradle.kts.

Android Kotlin

dependencies {
    implementation(project([1]))
}

Drag options to blanks, or click blank then click option'

A":moduleB"

B"moduleB"

CmoduleB

D"\":moduleB\""

Attempts:

3 left

💡 Hint

Common Mistakes

Adding extra quotes inside the string

Omitting the colon prefix

Using just the module name without quotes

The project path must be a string with colon prefix and no extra quotes inside.

4fill in blank

hard

Fill both blanks to create a Kotlin interface and implement it in a class.

Android Kotlin

interface [1] {
    fun sayHello(): String
}

class Greeter : [2] {
    override fun sayHello() = "Hi from Greeter"
}

Drag options to blanks, or click blank then click option'

AGreeting

BGreeter

Attempts:

3 left

💡 Hint

Common Mistakes

Using the class name as interface

Mismatching names between interface and implementation

The interface is named Greeting and the class implements it by name.

5fill in blank

hard

Fill all three blanks to define a module-level constant and use it in a function.

Android Kotlin

const val [1] = [2]

fun printVersion() {
    println("App version: $[3]")
}

Drag options to blanks, or click blank then click option'

AAPP_VERSION

B"1.0.0"

DVERSION

Attempts:

3 left

💡 Hint

Common Mistakes

Not using quotes for the string value

Using different names for constant and usage

Define APP_VERSION as a constant string and use it inside the function.