Checking Internet is ON/OFF Using Kotlin

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<layout
    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"
    tools:context=".MainActivity">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"

        android:orientation="vertical">


        <Button
            android:id="@+id/button"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Button" />
    </LinearLayout>
</layout>

MainActivity.kt

package com.androindian.chekinginternet

import android.os.Bundle
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import androidx.databinding.DataBindingUtil
import com.androindian.chekinginternet.databinding.ActivityMainBinding

class MainActivity : AppCompatActivity() {
    var binding: ActivityMainBinding? = null
    var connectionChecking: ConnectionChecking? = null
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = DataBindingUtil.setContentView(
            this@MainActivity, R.layout.activity_main
        )
        connectionChecking = ConnectionChecking()
        binding?.button?.setOnClickListener {
            if (connectionChecking!!.isConnectingToInternet(this@MainActivity)) {
                Toast.makeText(this@MainActivity, "Net is there", Toast.LENGTH_SHORT).show()
            } else {
                Toast.makeText(this@MainActivity, "No Net", Toast.LENGTH_SHORT).show()
            }
        }
    }
}

ConnectionChecking.kt

package com.androindian.chekinginternet

import android.content.Context
import android.net.ConnectivityManager
import android.net.NetworkInfo

class ConnectionChecking {
    fun isConnectingToInternet(context: Context): Boolean {
        val connectivity = context.getSystemService(
            Context.CONNECTIVITY_SERVICE
        ) as ConnectivityManager
        if (connectivity != null) {
            val info = connectivity.allNetworkInfo
            if (info != null) for (i in info.indices) if (info[i].state == NetworkInfo.State.CONNECTED) {
                return true
            }
        }
        return false
    }
}

build.gradle

plugins {
    id 'com.android.application'
}

android {
    namespace 'com.androindian.chekinginternet'
    compileSdk 33

    defaultConfig {
        applicationId "com.androindian.chekinginternet"
        minSdk 24
        targetSdk 33
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    dataBinding{
        enabled=true
    }
}

dependencies {

    implementation 'androidx.appcompat:appcompat:1.6.1'
    implementation 'com.google.android.material:material:1.9.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
}

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">

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <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:supportsRtl="true"
        android:theme="@style/Theme.ChekingInternet"
        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>