自定義adapter類

package com.example.andy_wangzhen.listviewdemo;

import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import org.w3c.dom.Text;

import java.util.List;

import gstdev.com.cinetics.R;

/**
 * Created by andy_wangzhen on 16/9/28.
 */

public class GroupAdapter extends BaseAdapter {

    private Context context;
    private List<String>list;
    private int index;
    public GroupAdapter (Context context,List<String>list){
        this.context = context;
        this.list = list;

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

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

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

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

        ViewHolder holder;
        if (convertView == null){

            convertView = LayoutInflater.from(context).inflate(R.layout.pick_item,null);

            holder = new ViewHolder();
            convertView.setTag(holder);
            holder.groupItem=(TextView)convertView.findViewById(R.id.pick_item_item);
        }else {
            holder =(ViewHolder)convertView.getTag();
        }
        holder.groupItem.setText(list.get(position));

        return convertView;
    }
    static class ViewHolder {
        TextView groupItem;
    }
}