Date Picker in Android using Jetpack Compose

package com.geeksforgeeks.demo

import android.app.DatePickerDialog
import android.content.Context
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.*
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.unit.*
import java.util.*

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            MaterialTheme {
                // call composable
                DatePickerExample(LocalContext.current)
            }
        }
    }
}

// composable with a button
@Composable
fun DatePickerExample(context: Context) {
    // Initializing a Calendar
    val calendar = Calendar.getInstance()

    // Fetching current year, month and day
    val year = calendar.get(Calendar.YEAR)
    val month = calendar.get(Calendar.MONTH)
    val day = calendar.get(Calendar.DAY_OF_MONTH)

    calendar.time = Date()

    // Declaring a string value to store date in string format
    val date = remember { mutableStateOf("") }

    // Declaring DatePickerDialog and setting initial values as current values (present year, month and day)
    val datePicker = DatePickerDialog(
        context, { _, mYear, mMonth, mDayOfMonth ->
            date.value = "$mDayOfMonth-${mMonth + 1}-$mYear"
        }, year, month, day
    )

    Column(
        modifier = Modifier.fillMaxSize(),
        verticalArrangement = Arrangement.Center,
        horizontalAlignment = Alignment.CenterHorizontally
    ) {
        // Creating a button that onClick displays the DatePickerDialog
        Button(
            onClick = { datePicker.show() },
            colors = ButtonDefaults.buttonColors(containerColor = Color(0XFF0F9D58))
        ) {
            Text(
                text = "Open Date Picker",
                color = Color.White
            )
        }

        // Adding a space of 100dp height
        Spacer(modifier = Modifier.size(20.dp))

        // Displaying the mDate value in the Text
        Text(
            text = "Selected Date: ${date.value}",
            fontSize = 16.sp,
            textAlign = TextAlign.Center
        )
    }
}