How to find Android ID in Android Kotlin or Java.

Nowadays due to security reasons, we are not able to access the IMEI number so after API level 29 if we need some unique id for our application so the android id is the best option other than the IMEI number.

So let's start the coding part.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/android_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

Now we will code for the kotlin file.

MainActivity.kt

package com.example.androidid

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.provider.Settings
import android.view.View
import android.widget.TextView

class MainActivity: AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {…