@DavidDPG ok en mi caso necesito heredar de dos clases:
` private class SectionsPagerAdapter constructor(
fm: FragmentManager,
private val nombut: Array<String>
) : FragmentStatePagerAdapter(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT) {
private val cant = arrayOf("0", "0", "0")
var bool: Boolean=false
override fun getItem(position: Int): Fragment {
// getItem is called to instantiate the fragment for the given page.
// Return a PlaceholderFragment (defined as a static inner class below).
return PlaceholderFragment.newInstance(self)