Почему высота ListView неверна?

проверьте ответ ниже:

ListAdapter listAdapter = listView.getAdapter();
        if (listAdapter == null) {
            // pre-condition
            return;
        }

        int totalHeight = listView.getPaddingTop() + listView.getPaddingBottom();
        int desiredWidth = View.MeasureSpec.makeMeasureSpec(listView.getWidth(), View.MeasureSpec.AT_MOST);
        Log.d("list", "" + listAdapter.getCount());

        for (int i = 0; i < listAdapter.getCount(); i++) {
            View listItem = listAdapter.getView(i, null, listView);

            if (listItem != null) {
                // This next line is needed before you call measure or else you won't get measured height at all. The listitem needs to be drawn first to know the height.
                listItem.setLayoutParams(new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT));
                listItem.measure(desiredWidth, View.MeasureSpec.UNSPECIFIED);
                totalHeight += listItem.getMeasuredHeight();

                Log.d("total height", "" + totalHeight);

            }
        }

        ViewGroup.LayoutParams params = listView.getLayoutParams();
        params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));

        Log.d("params height", "" + params.height);

        listView.setLayoutParams(params);
        listView.requestLayout();

возможно, вы забыли общее верхнее и нижнее заполнение и настройку параметров для элемента списка, как в приведенном выше коде.