Kotlin with Jetpack Compose

Modern Android development with Kotlin.

Overview

Kotlin is a modern programming language that runs on the JVM and is fully interoperable with Java. Jetpack Compose is Android's modern toolkit for building native UI.

Features

• Concise and safe language
• 100% interoperable with Java
• Coroutines for async programming
• Jetpack Compose for UI
• Modern Android development
• Type safety

Getting Started

# Create new project in Android Studio
# Or use command line with Kotlin DSL

Basic Example

// MainActivity.kt
import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.*
import androidx.compose.material3.*
import androidx.compose.runtime.*
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            MyApp()
        }
    }
}

@Composable
fun MyApp() {
    var count by remember { mutableStateOf(0) }
    
    Column(
        modifier = Modifier.fillMaxSize(),
        horizontalAlignment = Alignment.CenterHorizontally,
        verticalArrangement = Arrangement.Center
    ) {
        Text(
            text = "Count: $count",
            style = MaterialTheme.typography.headlineMedium
        )
        Spacer(modifier = Modifier.height(16.dp))
        Button(onClick = { count++ }) {
            Text("Increment")
        }
    }
}

PAPER-CODE Integration

PAPER-CODE provides:

• Kotlin project templates
• Jetpack Compose setup
• Architecture patterns
• Testing configurations

Resources

• Kotlin Documentation
• Jetpack Compose Documentation