ArrayMapAdapter.java

   class ArrayMapAdapter extends BaseAdapter {
        private final ArrayMap<String, String> mData;

        public ArrayMapAdapter(ArrayMap<String, String> map) {
            mData = map;
        }

        @Override
        public int getCount() {
            return mData.size();
        }

        @Override
        public Pair<String, String> getItem(int position) {
            return new Pair<>(mData.keyAt(position), mData.valueAt(position));
        }

        @Override
        public long getItemId(int position) {
            return 0;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            final View result;

            if (convertView == null) {
                result = LayoutInflater.from(parent.getContext()).inflate(android.R.layout.simple_list_item_1, parent, false);
            } else {
                result = convertView;
            }

            final String value = getItem(position).second;

            ((TextView) result.findViewById(android.R.id.text1)).setText(value);

            return result;
        }
    }