How to Use Google Play Install Referrer API in Android using Jetpack Compose?

import androidx.compose.ui.graphics.Color

val Purple200 = Color(0xFF0F9D58)
val Purple500 = Color(0xFF0F9D58)
val Purple700 = Color(0xFF3700B3)
val Teal200 = Color(0xFF03DAC5)

// in the below line, we are adding different colors.
val greenColor = Color(0xFF0F9D58)

import android.content.Context
import android.os.Bundle
import android.os.RemoteException
import android.widget.Toast
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.*
import androidx.compose.material.*
import androidx.compose.runtime.*
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.*
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.unit.*
import com.android.installreferrer.api.InstallReferrerClient
import com.android.installreferrer.api.InstallReferrerStateListener
import com.android.installreferrer.api.ReferrerDetails
import com.example.newcanaryproject.ui.theme.*


class MainActivity : ComponentActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            NewCanaryProjectTheme {
                // in the below line, we are specifying background color for our application
                Surface(
                    // in the below line, we are specifying modifier and color for our app
                    modifier = Modifier.fillMaxSize(), color = MaterialTheme.colors.background
                ) {

                    // in the below line, we are specifying theme as scaffold.
                    Scaffold(

                        // in scaffold we are specifying top bar.
                        topBar = {

                            // inside top bar we are specifying background color.
                            TopAppBar(backgroundColor = greenColor,

                                // along with that we are specifying title for our top bar.
                                title = {

                                    // in the top bar we are specifying tile as a text
                                    Text(

                                        // in the below line, we are specifying text to display in top app bar.
                                        text = "Google Play Install Referrer",

                                        // in the below line, we are specifying modifier to fill max width.
                                        modifier = Modifier.fillMaxWidth(),

                                        // in the below line, we are specifying text alignment.
                                        textAlign = TextAlign.Center,

                                        // in the below line, we are specifying color for our text.
                                        color = Color.White
                                    )
                                })
                        }) {
                        // in the below line, we are calling pop window dialog method to display ui.
                        GooglePlayInstallReferrer(LocalContext.current)
                    }
                }
            }
        }
    }
}

@Composable
fun GooglePlayInstallReferrer(ctx: Context) {
    // in the below line, we are creating a variable for referrer
    val referrer = remember {
        mutableStateOf("")
    }

    // in the below line, we are building our install referrer client and building it.
    var referrerClient: InstallReferrerClient = InstallReferrerClient.newBuilder(ctx).build();

    // in the below line, we are starting its connection.
    referrerClient.startConnection(object : InstallReferrerStateListener {
        override fun onInstallReferrerSetupFinished(responseCode: Int) {
            // this method is called when install referrer setup is finished.
            when (responseCode) {
                InstallReferrerClient.InstallReferrerResponse.OK -> {
                    // this case is called when the status is OK and
                    var response: ReferrerDetails? = null
                    try {
                        // in the below line, we are getting referrer details
                        // by calling get install referrer.
                        response = referrerClient.installReferrer

                        // in the below line, we are getting referrer url.
                        val referrerUrl = response.installReferrer

                        // in the below line, we are getting referrer click time.
                        val referrerClickTime = response.referrerClickTimestampSeconds

                        // in the below line, we are getting app install time
                        val appInstallTime = response.installBeginTimestampSeconds

                        // in the below line, we are getting our time when
                        // user has used our apps instant experience.
                        val instantExperienceLaunched = response.googlePlayInstantParam

                        // in the below line, we are getting our
                        // apps install referrer.
                        var refrer = response.installReferrer

                        // in the below line, we are setting all detail to our text view.
                        referrer.value =
                            "Referrer is : \n$referrerUrl\nReferrer Click Time is : $referrerClickTime\nApp Install Time : $appInstallTime"
                    } catch (e: RemoteException) {
                        // handling error case.
                        e.printStackTrace()
                    }
                }
                InstallReferrerClient.InstallReferrerResponse.FEATURE_NOT_SUPPORTED ->
                    // API not available on the current Play Store app.
                    Toast.makeText(
                        ctx,
                        "Feature not supported..",
                        Toast.LENGTH_SHORT
                    ).show()
                InstallReferrerClient.InstallReferrerResponse.SERVICE_UNAVAILABLE ->
                    // Connection couldn't be established.
                    Toast.makeText(
                        ctx,
                        "Fail to establish connection",
                        Toast.LENGTH_SHORT
                    ).show()
            }
        }

        override fun onInstallReferrerServiceDisconnected() {
            // Try to restart the connection on the next request to
            // Google Play by calling the startConnection() method.
            Toast.makeText(ctx, "Service disconnected..", Toast.LENGTH_SHORT)
                .show()
        }
    })


    // in the below line, we are creating a column.
    Column(
        // in this column we are specifying
        // modifier to add padding and fill
        // max size
        modifier = Modifier
            .fillMaxSize()
            .padding(horizontal = 20.dp),

        // in the below line, line we are adding horizontal alignment
        // and vertical arrangement
        horizontalAlignment = Alignment.CenterHorizontally,
        verticalArrangement = Arrangement.Center
    ) {

        // in the below line, line we are creating a text view.
        Text(
            text = "Google Play Install Referrer",
            color = greenColor,
            fontSize = 20.sp,
            fontWeight = FontWeight.Bold
        )

        // in the below line, we are adding a spacer.
        Spacer(modifier = Modifier.height(20.dp))

        // in the below line, we are creating a simple text
        Text(
            text = referrer.value,
            color = Color.Black,
            fontSize = 18.sp,
            textAlign = TextAlign.Center
        )
    }
}