ViewPagerAdapter2.kt

import androidx.fragment.app.Fragment
import androidx.fragment.app.FragmentManager
import androidx.lifecycle.Lifecycle
import androidx.viewpager2.adapter.FragmentStateAdapter
import java.util.ArrayList

class ViewPagerAdapter2(
    fragmentManager: FragmentManager,
    lifecycle: Lifecycle,
): FragmentStateAdapter(fragmentManager, lifecycle) {

    private val mFragmentList = ArrayList<() -> Fragment>()

    override fun createFragment(position: Int): Fragment {
        return mFragmentList[position]()
    }

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

    fun addFragment(fragmentCreator: () -> Fragment) {
        mFragmentList.add(fragmentCreator)
    }
}