Onboarding Screen with ViewPager2 kotlin

Output:

1/  Create an Empty views activity - ActivityOnboarding

2/ Modify the activity_onboarding.xml file 

<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:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".ActivityOnboarding">

    <androidx.viewpager2.widget.ViewPager2
        android:id="@+id/viewPager"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent" />

    <com.google.android.material.button.MaterialButton
        android:id="@+id/nextButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Next"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        android:layout_margin="16dp" />

    <com.google.android.material.button.MaterialButton
        android:id="@+id/skipButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Skip"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        android:layout_margin="16dp" />

</androidx.constraintlayout.widget.ConstraintLayout>

3/Modify a layout under res/layout - item_onboarding.xml.

<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:layout_marginTop="32dp"
        android:contentDescription="@string/app_name"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        android:src="@drawable/ic_launcher_foreground" />

    <TextView
        android:id="@+id/titleTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:text="Title"
        android:textSize="24sp"
        android:textStyle="bold"
        app:layout_constraintTop_toBottomOf="@id/imageView"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent" />

    <TextView
        android:id="@+id/descriptionTextView"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:text="Description"
        android:gravity="center"
        app:layout_constraintTop_toBottomOf="@id/titleTextView"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintBottom_toBottomOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

4/  Create a data class OnboardingItem.kt

package com.microappvalley.onboardingscreenwithviewpager2kotlin

data class OnboardingItem(
    val imageResId: Int,
    val title: String,
    val description: String
)

5/  Create a OnboardingAdapter.kt

package com.microappvalley.onboardingscreenwithviewpager2kotlin

import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.ImageView
import android.widget.TextView
import androidx.recyclerview.widget.RecyclerView

class OnboardingAdapter(private val items: List<OnboardingItem>) : RecyclerView.Adapter<OnboardingAdapter.OnboardingViewHolder>() {

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): OnboardingViewHolder {
        val view = LayoutInflater.from(parent.context).inflate(R.layout.item_onboarding, parent, false)
        return OnboardingViewHolder(view)
    }

    override fun onBindViewHolder(holder: OnboardingViewHolder, position: Int) {
        holder.bind(items[position])
    }

    override fun getItemCount(): Int = items.size

    inner class OnboardingViewHolder(view: View) : RecyclerView.ViewHolder(view) {
        private val imageView: ImageView = view.findViewById(R.id.imageView)
        private val titleTextView: TextView = view.findViewById(R.id.titleTextView)
        private val descriptionTextView: TextView = view.findViewById(R.id.descriptionTextView)

        fun bind(item: OnboardingItem) {
            imageView.setImageResource(item.imageResId)
            titleTextView.text = item.title
            descriptionTextView.text = item.description
        }
    }
}

6/ Modify ActivityOnboarding.kt

package com.microappvalley.onboardingscreenwithviewpager2kotlin

import android.content.Intent
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.viewpager2.widget.ViewPager2
import com.google.android.material.button.MaterialButton

class ActivityOnboarding : AppCompatActivity() {
    private lateinit var viewPager: ViewPager2
    private lateinit var nextButton: MaterialButton
    private lateinit var skipButton: MaterialButton

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContentView(R.layout.activity_onboarding)
        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
        }

        viewPager = findViewById(R.id.viewPager)
        nextButton = findViewById(R.id.nextButton)
        skipButton = findViewById(R.id.skipButton)

        val onboardingItems = listOf(
            OnboardingItem(R.drawable.ic_launcher_foreground, "Welcome", "Welcome to this app"),
            OnboardingItem(R.drawable.ic_launcher_foreground, "Explore", "Explore the whole app"),
            OnboardingItem(R.drawable.ic_launcher_foreground, "Get Started", "Get started your journey")
        )
        val adapter = OnboardingAdapter(onboardingItems)
        viewPager.adapter = adapter

        nextButton.setOnClickListener {
            if (viewPager.currentItem < onboardingItems.size - 1) {
                viewPager.currentItem += 1
            } else {
                finishOnboarding()
            }
        }

        skipButton.setOnClickListener {
            finishOnboarding()
        }
    }

    private fun finishOnboarding() {
        startActivity(Intent(this, MainActivity::class.java))
        finish()
    }
}

7/ Modify AndroidManifest.xml file (change the intent filter from MainActivity to OnboardingActivity)

<?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.OnboardingScreenWithViewPager2Kotlin"
        tools:targetApi="31">
        <activity
            android:name=".ActivityOnboarding"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

</manifest>