# ViewPager
main layout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <androidx.viewpager.widget.ViewPager
        android:id="@+id/view_pager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</LinearLayout>

content layout

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

    <TextView
        android:id="@+id/title"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="page"/>

</LinearLayout>

PagerAdapter class

class MyPagerAdapter(private val context: Context, private val list: List<String>) : PagerAdapter(){

    override fun isViewFromObject(view: View, any: Any): Boolean {
        return view == any
    }

    override fun getCount(): Int {
        return list.size
    }

    override fun instantiateItem(container: ViewGroup, position: Int): Any {

        val view = LayoutInflater.from(context).inflate(R.layout.view_page, container, false)

        val text = list[position]

        view.title.text = text

        container.addView(view)

        return view
    }

    override fun destroyItem(container: ViewGroup, position: Int, `object`: Any) {
        container.removeView(`object` as View)
    }
}

Usage

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

        view_pager.adapter = MyPagerAdapter(this, listOf("Page1","Page2","Page3"))
    }