java.lang.IllegalArgumentException: parameter must be a descendant of this view Error

Question

I have a strange Error with a ViewGroup. For my main View I use classes in this links ViewFlow project

    java.lang.IllegalArgumentException: parameter must be          


        

Answer 1

I had the same issue when deleting item from recycler view which contains EditText. Just before notifying adapter that item was deleted I used

(requireContext() as Activity).currentFocus?.clearFocus()