E:\android\android apps\MyApplication2\app\src\main\AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.MyApplication"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

E:\android\android apps\MyApplication2\app\src\main\res\layout\activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:orientation="vertical"
    >
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textColor="#FF5722"
        android:textSize="30sp"
        android:textStyle="bold"
        android:textAllCaps="true"
        android:padding="10dp"
        android:layout_margin="10dp"
        android:gravity="center"
        android:layout_gravity="center"
        android:id="@+id/tv1"
        />
    <CheckBox
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Android"
        android:textColor="#FF5722"
        android:textSize="30sp"
        android:textStyle="bold"
        android:textAllCaps="true"
        android:padding="10dp"
        android:layout_margin="10dp"
        android:gravity="center"
        android:layout_gravity="center"
        android:id="@+id/check"
        ></CheckBox>


</LinearLayout>

E:\android\android apps\MyApplication2\app\src\main\java\com\example\myapplication\MainActivity.kt

package com.example.myapplication

import android.os.Bundle
import android.widget.CheckBox
import android.widget.TextView
import androidx.activity.enableEdgeToEdge
import androidx.appcompat.app.AppCompatActivity
import androidx.core.view.ViewCompat
import androidx.core.view.WindowInsetsCompat

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        var check: CheckBox?=null
        var tv: TextView?=null

        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContentView(R.layout.activity_main)

        tv = findViewById(R.id.tv1)
        check = findViewById(R.id.check)



        check!!.setOnClickListener{
            if(check!!.isChecked)
                tv!!.text=("Checked")
            else
                tv!!.text=("UnChecked")

        }

    }
}

E:\android\android apps\MyApplication2\app\build.gradle.kts

android {
    compileSdk = 36

  defaultConfig {
        targetSdk = 36
    }

E:\android\android apps\MyApplication2\gradle\wrapper\gradle-wrapper.properties

#Tue Sep 09 12:55:09 IST 2025
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
#distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
#distributionUrl=https\://services.gradle.org/distributions/gradle-8.9-bin.zip
distributionUrl=https\://services.gradle.org/distributions/gradle-8.11.1-bin.zip

zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

E:\android\android apps\MyApplication2\gradle\libs.versions.toml

[versions]
agp = "8.6.0"
kotlin = "1.9.0"
coreKtx = "1.10.1"
junit = "4.13.2"
junitVersion = "1.3.0"
espressoCore = "3.7.0"
appcompat = "1.7.1"
material = "1.12.0"
activity = "1.10.1"
constraintlayout = "2.2.1"

[libraries]
androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
junit = { group = "junit", name = "junit", version.ref = "junit" }
androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
androidx-appcompat = { group = "androidx.appcompat", name = "appcompat", version.ref = "appcompat" }
material = { group = "com.google.android.material", name = "material", version.ref = "material" }
androidx-activity = { group = "androidx.activity", name = "activity", version.ref = "activity" }
androidx-constraintlayout = { group = "androidx.constraintlayout", name = "constraintlayout", version.ref = "constraintlayout" }

[plugins]
android-application = { id = "com.android.application", version.ref = "agp" }
kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }

Output: