實現listView中選擇item高亮的功能，最重要的程式碼就是

adapter.notifyDataSetInvalidated();

通知觀察者，此條資料不再有效。
其次需要在實現BaseAdapter的類中新增一個方法，紀錄選中的item的id

public void setCurrent(int current)
        {
            this.current = current;
        }

然後就是在getView方法中判斷，position的值是否和current的值一樣，然後指定你想要呈現的item的背景或顏色。
程式碼如下：

public
 
 class MyBaseAdapter extends Activity implements AdapterView.OnItemClickListener{

    private ListView listView;
    private Base adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_my_base_adapter);

        listView = (ListView) findViewById(R.id.listView);
        List<String> list = new
 
 ArrayList<String>();
        list.add("孫悟空");
        list.add("唐三藏");
        list.add("豬八戒");
        list.add("沙悟淨");
        adapter = new Base(list);
        listView.setAdapter(adapter);
        listView.setOnItemClickListener(this);

    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int
 
 position, long id) {
        adapter.setCurrent(position);
        adapter.notifyDataSetInvalidated();
    }

    class Base extends BaseAdapter{

        private List<String> data;
        private int current;

        Base(List<String> data) {
            this.data = data;
        }

        public void setCurrent(int current)
        {
            this.current = current;
        }

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

        @Override
        public Object getItem(int position) {
            return data.get(position);
        }

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

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            HolderView holderView = null;
            if(convertView==null)
            {
                convertView = getLayoutInflater().inflate(R.layout.baseadapter_item,null);
                holderView = new HolderView((ImageView)convertView.findViewById(R.id.image),
                        (TextView)convertView.findViewById(R.id.text));
                convertView.setTag(holderView);
            }
            holderView = (HolderView) convertView.getTag();

            if(current == position)
            {
                holderView.getImageView().setImageResource(android.R.drawable.ic_delete);
                holderView.getTextView().setText(data.get(position));
                holderView.getTextView().setTextColor(Color.RED);
            }else{
                holderView.getImageView().setImageResource(R.drawable.ic_launcher);
                holderView.getTextView().setText(data.get(position));
                holderView.getTextView().setTextColor(Color.BLACK);
            }
            return convertView;
        }
    }
    class HolderView{
        private ImageView imageView;
        private TextView textView;

        HolderView(ImageView imageView, TextView textView) {
            this.imageView = imageView;
            this.textView = textView;
        }

        public ImageView getImageView() {
            return imageView;
        }

        public TextView getTextView() {
            return textView;
        }
    }
}