Android App Development with Kotlin

Start Android app development with the Kotlin programming language.

Intermediate20 min

Setup Steps

1. Install Android Studio (Kotlin support is included)

2. Create a new project: File > New > New Project

3. Select 'Empty Activity', Language: Kotlin

4. Basic MainActivity.kt structure:

kotlin
class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            MyAppTheme {
                Greeting("World")
            }
        }
    }
}

@Composable
fun Greeting(name: String) {
    Text(text = "Hello $name!")
}

5. Build UI using Jetpack Compose

6. Gradle dependencies (build.gradle.kts):

implementation("androidx.compose.material3:material3")
implementation("androidx.navigation:navigation-compose:2.7.7")

7. API calls with Retrofit:

implementation("com.squareup.retrofit2:retrofit:2.9.0")
implementation("com.squareup.retrofit2:converter-gson:2.9.0")

8. Run the app: Run > Run 'app'

Related Guides

Android Studio Setup

Install Android Studio IDE and create your first Android project.

Flutter Setup

Install Flutter SDK and start cross-platform mobile app development.

React Native Setup

Set up the React Native cross-platform mobile app development environment.

Publishing an App to Google Play Store

Steps required to publish your Android app on the Google Play Store.