Add button with counter and click logging functionality to MainActivity

app/src/main/java/de/jadehs/strassenschadenpro2/MainActivity.kt

@@ -1,16 +1,33 @@
 package de.jadehs.strassenschadenpro2
 
 import android.os.Bundle
+import android.util.Log
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.absolutePadding
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.material3.Button
+import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.modifier.modifierLocalConsumer
 import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
 import de.jadehs.strassenschadenpro2.ui.theme.StrassenSchadenPro2Theme
 
 class MainActivity : ComponentActivity() {
@@ -19,29 +36,21 @@ class MainActivity : ComponentActivity() {
         enableEdgeToEdge()
         setContent {
             StrassenSchadenPro2Theme {
-                Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
+                //var count = 0
-                    Greeting(
+                var count by remember { mutableStateOf(0) }
-                        name = "Android",
+                Column(modifier = Modifier.fillMaxSize(),
-                        modifier = Modifier.padding(innerPadding)
+                    verticalArrangement = Arrangement.Center,
-                    )
+                    horizontalAlignment = Alignment.CenterHorizontally) {
-                }
+                    Text(text= count.toString())
-            }
+                    Button(onClick = {
-        }
+                        count++
-    }
+                        Log.d("MainActivity", "Button clicked $count")
-}
 
-@Composable
+                    }) {
-fun Greeting(name: String, modifier: Modifier = Modifier) {
+                        Text("Click me")
-    Text(
+                    }
-        text = "Hello $name!",
+                }
-        modifier = modifier
+            }
-    )
+        }
-}
-
-@Preview(showBackground = true)
-@Composable
-fun GreetingPreview() {
-    StrassenSchadenPro2Theme {
-        Greeting("Android")
     }
 }