How to know if a RecyclerView has enough content to scroll?

Question

Currently I am using a RecyclerView with a LinearLayout Manager and an EditText as HeaderView for filtering the content of the list.

I would like to hide the EditText if

Answer 1

An answer that also accounts for dynamic screen sizes.

mRecyclerView.getViewTreeObserver().addOnScrollChangedListener(() -> {

    if (mRecyclerView.canScrollVertically(1) && //still scrolling
        mRecyclerView.computeVerticalScrollRange() >= mRecyclerView.getHeight()) { //Big enough for scrolling

        return;  //we still scrolling so early out.
        }

    DoMyFunction();
}

Answer 2

do you mean this:

https://developer.android.com/reference/android/support/v7/widget/RecyclerView.LayoutManager.html#canScrollVertically()

if(recyclerView.getLayoutManager().canScrollVertically()){
    // do stuff
} else{
    // do other stuff
}

Answer 3

RecyclerView can't scroll anymore when the item at last position is completely visible.

In condition that would sound as:

mRecyclerView.getLayoutManager().findLastCompletelyVisibleItemPosition() == mRecyclerViewAdapter.getItemCount() - 1;