ADVANCED USER INTERFACE/custom layout & data from kotlin

E:\android\MyApplication\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">
        <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\MyApplication\app\src\main\java\com\example\myapplication\MainActivity.kt

package com.example.myapplication

import android.annotation.SuppressLint
import android.content.Intent
import android.net.Uri
import android.os.Bundle
import android.provider.MediaStore
import android.widget.ArrayAdapter
import android.widget.Toast
import androidx.activity.enableEdgeToEdge
import androidx.appcompat.app.AppCompatActivity
import androidx.databinding.DataBindingUtil
import com.example.myapplication.databinding.ActivityMainBinding

class MainActivity : AppCompatActivity() {
    var binding: ActivityMainBinding? = null

    var Course = arrayOf(
        "Android", "Java", "CoreJava", "Adv Java",
        "PHP", "Python", "Core Java", "Adv Java", "Android", "Java",
        "CoreJava", "Adv Java", "PHP", "Python", "Core Java", "Adv Java",
        "Android", "Java", "CoreJava", "Adv Java", "PHP", "Python", "Core Java", "Adv Java"
    )


    @SuppressLint("WrongConstant")
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // Enable edge-to-edge content
        enableEdgeToEdge()
        binding = DataBindingUtil.setContentView(this, R.layout.activity_main)

// predefined layout & data from kotlin
//        var courseadapter= ArrayAdapter(this@MainActivity,android.R.layout.simple_list_item_1  ,Course)
//        binding?.list?.adapter=courseadapter

// predefined layout & data from Res
//        var xyz = resources.getStringArray(R.array.xyz)
//        var courseadapter = ArrayAdapter(
//            this@MainActivity,
//            android.R.layout.simple_list_item_1,
//            resources.getStringArray(R.array.xyz)
//        )
//        binding?.list?.adapter = courseadapter

        // custom layout & data from kotlin
        var courseadapter=ArrayAdapter(this@MainActivity,R.layout.custom, Course)
        binding?.list?.adapter=courseadapter

        binding?.list?.setOnItemClickListener { parent, view, position, id ->
            // Get the clicked item value from the adapter
            val selectedItem = parent.getItemAtPosition(position).toString()
            Toast.makeText(this@MainActivity, "Position: $position, Value: $selectedItem", Toast.LENGTH_LONG).show()
        }

    }
}

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

<?xml version="1.0" encoding="utf-8"?>
<layout>
    <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:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".MainActivity"
        android:orientation="vertical">
    <ListView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/list"/>
    </LinearLayout>

</layout>

E:\android\MyApplication\app\src\main\res\layout\custom.xml

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:textStyle="bold"
    android:textAllCaps="true"
    android:textColor="#FF5722"
    android:textSize="20sp"
    android:layout_margin="10dp"
    android:padding="10dp">
</TextView>