Recyclerview with databinding

activitymain.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:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:orientation="vertical">

    <androidx.recyclerview.widget.RecyclerView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/rec"
        android:layout_margin="10dp"/>

</LinearLayout>
</layout>

MainActivity.kt

package com.androindian.recycler

import android.os.Bundle
import androidx.activity.enableEdgeToEdge
import androidx.appcompat.app.AppCompatActivity
import androidx.core.view.ViewCompat
import androidx.core.view.WindowInsetsCompat
import androidx.databinding.DataBindingUtil
import androidx.recyclerview.widget.LinearLayoutManager
import com.androindian.recycler.databinding.ActivityMainBinding

class MainActivity : AppCompatActivity() {
    //1
    var names=arrayOf("AAAA","BBBB","CCCC","DDD")
    var numbers=arrayOf("223543","12324","343454","23354")
    var images=arrayOf(R.mipmap.ic_launcher_round,R.mipmap.ic_launcher_round,R.mipmap.ic_launcher_round,
        R.mipmap.ic_launcher_round)
    var emails=arrayOf("AAAA@gmail.com ","BBBB@gmail.com","CCCC@gmail.com","DDD@gmail.com")
    var binding:ActivityMainBinding?=null
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        binding= DataBindingUtil.setContentView(this,R.layout.activity_main)
        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
            insets
        }

        //2
        var linearLayoutManager=LinearLayoutManager(this@MainActivity,LinearLayoutManager.VERTICAL,true)
        binding?.rec?.layoutManager=linearLayoutManager

        //3
        var customAdapter=CustomaAdapter(this@MainActivity,names,numbers,images,emails)
        binding?.rec?.adapter=customAdapter
    }
}

CustomaAdapter.kt

package com.androindian.recycler

import android.content.Context
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.databinding.DataBindingUtil
import androidx.recyclerview.widget.RecyclerView
import androidx.recyclerview.widget.RecyclerView.ViewHolder
import com.androindian.recycler.databinding.CustomadapterBinding

class CustomaAdapter(mainActivity: MainActivity, names: Array<String>, numbers: Array<String>, images: Array<Int>, emails: Array<String>) :
    RecyclerView.Adapter<CustomaAdapter.MyViewHolder>() {
            //var binding:CustomBinding?=null
        var adpnames: Array<String>
    var adpimges: Array<Int>
    var adpnumbers: Array<String>
    var adpemial: Array<String>
    var adpContext: Context
    init {
        adpemial = emails
        adpnames = names
        adpnumbers = numbers
        adpimges = images
        adpContext = mainActivity
    }
//
    class MyViewHolder(itemView: View) :  ViewHolder(itemView) {
    val binding: CustomadapterBinding = DataBindingUtil.getBinding(itemView)!!

    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): CustomaAdapter.MyViewHolder {

      val binding: CustomadapterBinding = DataBindingUtil.inflate(
        LayoutInflater.from(parent.context),
         R.layout.customadapter,
          null,
          false
    )

       return binding?.root?.let { MyViewHolder(it) }!!
    }

    override fun onBindViewHolder(holder: CustomaAdapter.MyViewHolder, position: Int) {
        holder.binding?.name?.text = adpnames.get(holder.adapterPosition)
        holder.binding?.mobile?.text=adpnumbers.get(holder.adapterPosition)
        holder.binding?.email?.text=adpemial.get(holder.adapterPosition)
        holder?.binding?.img?.setImageResource(adpimges.get(holder.adapterPosition))
    }

    override fun getItemCount(): Int {
        return adpemial.size
    }

}

customadapter.xml

<?xml version="1.0" encoding="utf-8"?>
<layout
    xmlns:android="http://schemas.android.com/apk/res/android"
    >
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        android:id="@+id/img"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/name"
            android:layout_margin="10dp"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/mobile"
            android:layout_margin="10dp"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/email"
            android:layout_margin="10dp"/>
    </LinearLayout>



</LinearLayout>
</layout>

build.gradle

plugins {
    alias(libs.plugins.android.application)
    alias(libs.plugins.jetbrains.kotlin.android)
}

android {
    namespace = "com.androindian.recycler"
    compileSdk = 35

    defaultConfig {
        applicationId = "com.androindian.recycler"
        minSdk = 24
        targetSdk = 34
        versionCode = 1
        versionName = "1.0"

        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            isMinifyEnabled = false
            proguardFiles(
                getDefaultProguardFile("proguard-android-optimize.txt"),
                "proguard-rules.pro"
            )
        }
    }
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_1_8
        targetCompatibility = JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = "1.8"
    }
    dataBinding{
        enable=true
}

}

dependencies {

    implementation(libs.androidx.core.ktx)
    implementation(libs.androidx.appcompat)
    implementation(libs.material)
    implementation(libs.androidx.activity)
    implementation(libs.androidx.constraintlayout)
    testImplementation(libs.junit)
    androidTestImplementation(libs.androidx.junit)
    androidTestImplementation(libs.androidx.espresso.core)
}