Android limit the no of items displayed in a spinner's dropdown list

Question

I have a spinner item bound to an array adapter which might have 0 or more items at any time. I want the spinner dropdown list to only show three items at a time, the rest o

Answer 1

The recommended solutions are not really interesting because they hard code the height of drop down this is bad because font size are actually different in different phones, I handled it dynamic and reliable like this :

ArrayAdapter adapter = new ArrayAdapter(this,
                R.layout.drop_down_text_view,
                new String[]{"A", "B", "C", "D", "E"}) {

            @NonNull
            @Override
            public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
                TextView dropDownTextView = (TextView) super.getView(position, convertView, parent);

                dropDownTextView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
                    @Override
                    public void onGlobalLayout() {
                        myDropDownMenuOrSpinnerOrAutoCompleteTextView.setDropDownHeight(dropDownTextView.getHeight() * 3);

                        dropDownTextView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
                    }
                });
                return dropDownTextView;
            }
        };