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How to Get the Device’s IMEI/ESN Programmatically in Android using Jetpack Compose?

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  • Last Updated : 01 Aug, 2022
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Android applications many times require the unique identity of the user while developing applications. This unique identity is used to identify the user of the application. Many android apps use the IMEI number as the unique identity of each user. In this article, we will take a look at How to get Device IMEI and ESN Programmatically in android using Jetpack Compose

Step by Step Implementation

Step 1: Create a New Project in Android Studio

To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio. While choosing the template, select Empty Compose Activity. If you do not find this template, try upgrading the Android Studio to the latest version. We demonstrated the application in Kotlin, so make sure you select Kotlin as the primary language while creating a New Project.

Step 2: Working with the MainActivity.kt file

Go to the MainActivity.kt file and refer to the following code. Below is the code for the MainActivity.kt file. Comments are added inside the code to understand the code in more detail.

Kotlin




package com.example.newcanaryproject
 
import android.Manifest
import android.Manifest.permission.READ_EXTERNAL_STORAGE
import android.app.Activity
import android.content.BroadcastReceiver
import android.content.Context
import android.content.Context.TELEPHONY_SERVICE
import android.content.Intent
import android.content.IntentFilter
import android.content.pm.PackageManager
import android.database.Cursor
import android.os.Build
import android.os.Bundle
import android.os.Environment
import android.provider.MediaStore
import android.telephony.TelephonyManager
import android.util.Log
import android.widget.Toast
 
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.annotation.RequiresApi
import androidx.compose.foundation.ExperimentalFoundationApi
import androidx.compose.foundation.Image
import androidx.compose.foundation.layout.*
import androidx.compose.foundation.lazy.GridCells
import androidx.compose.foundation.lazy.LazyVerticalGrid
import androidx.compose.material.*
import androidx.compose.runtime.*
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.semantics.Role.Companion.Image
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.unit.*
import androidx.core.app.ActivityCompat
import androidx.core.content.ContextCompat
import androidx.core.content.ContextCompat.getSystemService
import androidx.localbroadcastmanager.content.LocalBroadcastManager
import coil.compose.rememberImagePainter
import com.example.newcanaryproject.ui.theme.*
import java.io.File
 
class MainActivity : ComponentActivity() {
 
    @RequiresApi(Build.VERSION_CODES.O)
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            NewCanaryProjectTheme {
                // on below line we are specifying
                // background color for our application
                Surface(
                    modifier = Modifier.fillMaxSize(), color = MaterialTheme.colors.background
                ) {
                    // on 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(
                                        // on below line we are specifying text
                                        // to display in top app bar.
                                        text = "GFG",
 
                                        // on below line we are specifying modifier
                                        // to fill max width.
                                        modifier = Modifier.fillMaxWidth(),
 
                                        // on below line we are specifying
                                        // text alignment.
                                        textAlign = TextAlign.Center,
 
                                        // on below line we are specifying
                                       // color for our text.
                                        color = Color.White
                                    )
                                })
                        }) {
                        // on below line we are calling display Version Method.
                        displayIMEI(LocalContext.current, LocalContext.current as Activity)
                    }
                }
            }
        }
    }
 
    override fun onRequestPermissionsResult(
        requestCode: Int,
        permissions: Array<out String>,
        grantResults: IntArray
    ) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
        // on below line we are checking request code.
        when (requestCode) {
            101 -> {
                // on below line we are checking if permission is granted.
                if (grantResults.isNotEmpty() && grantResults[0] ==
                    PackageManager.PERMISSION_GRANTED
                ) {
                    // if permissions are granted we are displaying below toast message.
                    Toast.makeText(this, "Permission granted.", Toast.LENGTH_SHORT).show()
                } else {
                    // on below line we are displaying toast message if permissions
                    // are not granted.
                    Toast.makeText(this, "Permission denied.", Toast.LENGTH_SHORT).show()
                }
            }
        }
    }
}
 
@RequiresApi(Build.VERSION_CODES.O)
@Composable
fun displayIMEI(context: Context, activity: Activity) {
 
    // on below line we are creating a column
    Column(
        // on below line we are adding a modifier to it
        modifier = Modifier
            .fillMaxWidth()
            .fillMaxHeight(),
        verticalArrangement = Arrangement.Center,
        horizontalAlignment = Alignment.CenterHorizontally
    ) {
 
        // on below line we are checking for permissions
        if (ActivityCompat.checkSelfPermission(
                context,
                Manifest.permission.READ_PHONE_STATE
            ) != PackageManager.PERMISSION_GRANTED
        ) {
            // if permissions are not provided we
            // are requesting for permissions.
            ActivityCompat.requestPermissions(
                activity,
                arrayOf(Manifest.permission.READ_PHONE_STATE), 101
            )
        }
             
        // on below line we are creating a simple
        // text view for displaying heading.
        Text(
            text = "IMEI Number of Android Device",
            fontSize = 20.sp,
            modifier = Modifier.padding(5.dp),
            fontWeight = FontWeight.Bold
        )
 
        // on below line we are initializing our variables.
        val telephonyManager = context.getSystemService(TELEPHONY_SERVICE) as TelephonyManager
 
        // on below line we are getting
        // imei using Telephony Manager.
        val imei = telephonyManager.imei
 
        // on below line we are
        Text(
            text = imei,
            modifier = Modifier.padding(5.dp),
            fontSize = 20.sp,
            fontWeight = FontWeight.Bold
        )
 
    }
}

Step 3: Adding permissions in the AndroidManifest.xml file

Navigate to AndroidManifest.xml and add the below permissions to it in the manifest tag. 

XML




<uses-permission android:name="android.permission.READ_PRIVILEGED_PHONE_STATE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />

Now run your application to see the output of it. 

Output:

Output

 


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