Uppgift 1

MainActivity.kt

package com.example.uppgift1

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.compose.foundation.background
import androidx.compose.foundation.border
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxHeight
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.width
import androidx.compose.material3.Button
import androidx.compose.material3.ButtonDefaults
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.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.RectangleShape
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import com.example.uppgift1.ui.theme.Uppgift1Theme

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContent {
            Uppgift1Theme {
                Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
                    MainScreen()
                }
            }
        }
    }
}

@Composable
fun MainScreen() {
    var number by remember { mutableStateOf(0) }


    Column (
        modifier = Modifier
            .fillMaxSize()
            .background(Color.Blue)
        .padding(top = 100.dp),
        horizontalAlignment = Alignment.CenterHorizontally)
    {

        Row(modifier = Modifier
            .padding(10.dp)
            .fillMaxWidth()
            .background(Color.Green),
            horizontalArrangement = Arrangement.Center,
            verticalAlignment = Alignment.CenterVertically)
        {

            Text("UPGIFT 1", fontSize = 70.sp, color = Color.Black, modifier = Modifier.padding(bottom = 20.dp))


        }
Column(modifier = Modifier.padding(top = 10.dp).fillMaxHeight(),
    horizontalAlignment = Alignment.CenterHorizontally,
    verticalArrangement = Arrangement.Center) {

    if (number < 10) {
        Button(
            onClick = { number++ },
            modifier = Modifier
                .padding(top = 20.dp)
                .width(150.dp)
                .background(Color.Red),
            shape = RectangleShape,
            colors = ButtonDefaults.buttonColors(Color.Red)
        ) {
            Text("PLUS", color = Color.Black, fontSize = 20.sp)
        }
    }



    Text(text = number.toString(), fontSize = 200.sp)

    if (number > 0) {
        Button(
            onClick = { number-- },
            modifier = Modifier
                .padding(top = 20.dp)
                .width(150.dp)
                .background(Color.Red),
            shape = RectangleShape,
            colors = ButtonDefaults.buttonColors(Color.Red)
           ){
            Text("MINUS", color = Color.Black, fontSize = 20.sp)
        }
    }


}

    }
}

@Preview(showBackground = true)
@Composable
fun GreetingPreview() {
    Uppgift1Theme {
        MainScreen()
    }
}