Adapter for spinner to show hint item when nothing chosen. Position of selected items is shifted for 1.

HintSpinnerAdapter.java

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class HintSpinnerAdapter<T> extends ArrayAdapter<T> {
    public static final int HINT_COUNT = 1;
    public static final int HINT_POSITION = 0;
    private int hintColorRes, selectedColorRes;

    public HintSpinnerAdapter(Context context, int resource, List<T> valuesList, T hint) {
        super(context, resource);
        List<T> list = new ArrayList<>();
        list.add(0, hint);
        list.addAll(valuesList);
        addAll(list);
        init();
    }

    public HintSpinnerAdapter(Context context, int resource, T[] array, T hint) {
        super(context, resource);
        List<T> list = new ArrayList<>();
        list.add(0, hint);
        list.addAll(Arrays.asList(array));
        addAll(list);
        init();
    }
    
    private void init() {
        hintColorRes = Color.GRAY;
        selectedColorRes = Color.BLACK;
    }

   @Override
    public View getDropDownView(int position, View convertView, ViewGroup parent) {
        TextView view;
        if (position == 0) {
            TextView textView = new TextView(getContext());
            textView.setHeight(0);
            textView.setVisibility(View.GONE);
            view = textView;
        } else {
            view = (TextView) super.getDropDownView(position, null, parent);
        }
        parent.setVerticalScrollBarEnabled(false);
        return view;
    }

    public View getView(int position, View convertView, ViewGroup parent) {
        View view = super.getView(position, convertView, parent);
        if (view instanceof TextView) {
            ((TextView) view).setTextColor(position == HINT_POSITION ? hintColorRes : selectedColorRes);
        }
        return view;
    }

    public void setHintColorRes(int hintColorRes) {
        this.hintColorRes = hintColorRes;
    }

    public void setSelectedColorRes(int selectedColorRes) {
        this.selectedColorRes = selectedColorRes;
    }
}