Upload Tugas Helloword

Helloword/MainActivity.kt

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+package com.example.helloword
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.tooling.preview.Preview
+import com.example.helloword.ui.theme.HellowordTheme
+
+class MainActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContent {
+            HellowordTheme {
+                Surface(
+                    modifier = Modifier.fillMaxSize(),
+                    color = MaterialTheme.colorScheme.background
+                ) {
+                    HelloWorldScreen()
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun HelloWorldScreen() {
+    Box(
+        modifier = Modifier.fillMaxSize(),
+        contentAlignment = Alignment.Center
+    ) {
+        Text(text = "Hello World!")
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+fun PreviewHelloWorld() {
+    HellowordTheme {
+        HelloWorldScreen()
+    }
+}