GridView监听事件

package com.example.gridview;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.SimpleAdapter;
import android.widget.Toast;

public class MainActivity extends Activity implements OnItemClickListener{

    private GridView gridView;
    private List<Map<String, Object>> datalist;
    private int[] icon = { R.drawable.icon_address_book,
            R.drawable.icon_calendar, R.drawable.icon_camera,
            R.drawable.icon_clock, R.drawable.icon_games_control,
            R.drawable.icon_messenger, R.drawable.icon_ringtone,
            R.drawable.icon_settings, R.drawable.icon_speech_balloon,
            R.drawable.icon_weather, R.drawable.icon_world,
            R.drawable.icon_youtube };
    private String[] iconName = { "通讯录", "日历", "照相机", "时钟", "游戏", "短信", "铃声",
            "设置", "语音", "天气", "浏览器", "视频" };

    private SimpleAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        gridView = (GridView) this.findViewById(R.id.gridView);
        // 1.准备数据源
        // 2.新建适配器
        // 3.GridView加载适配器
        // 4.GridView配置事件监听器（OnItemClickListener）
        datalist = new ArrayList<Map<String, Object>>();
//        getData();
        adapter = new SimpleAdapter(this, getData(), R.layout.item,
                new String[] { "image", "text" }, new int[] { R.id.id_image,
                        R.id.id_text });
        gridView.setAdapter(adapter);
        gridView.setOnItemClickListener(this);
    }

    private List<Map<String, Object>> getData() {
        for (int i = 0; i < icon.length; i++) {
            Map<String, Object> map = new HashMap<String, Object>();
            map.put("image", icon[i]);
            map.put("text", iconName[i]);
            datalist.add(map);
        }

        return datalist;
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,
            long id) {
        Toast.makeText(this, "我是："+iconName[position], Toast.LENGTH_SHORT).show();
    }

}