Show DialogFragment at the top of screen

DialogFragment+GravityTop.kt

fun DialogFragment.setupToShowAtTheTop() {
    dialog?.window?.setGravity(Gravity.CENTER_HORIZONTAL or Gravity.TOP)
}

MyDialogFragment.kt

...
import androidx.fragment.app.DialogFragment
...

class MyDialogFragment : DialogFragment() {
    ...
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        setupToShowAtTheTop()
    }
    ...
}