android spinner 每行字体颜色都变化

final static int[] COLOR_LIST={Color.WHITE,Color.WHITE,Color.GRAY,Color.YELLOW,Color.RED};


 spinner=(Spinner)findViewById(R.id.spinner1);
        ArrayAdapter  ad=new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item,Constants.CONTENT_TYPE) {
            @Override
            public View getDropDownView(int position, View convertView, ViewGroup parent) {
                TextView view=(TextView) super.getDropDownView(position, convertView, parent);
                view.setTextColor(Constants.COLOR_LIST[position]);
                return view;
            }
        };
        ad.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(ad);