[转]Android网格视图(GridView)

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    <ImageView 
      android:id="@+id/itemImage"
      android:layout_width="80dp"
      android:layout_height="80dp"
      android:layout_centerHorizontal="true"/>
    <TextView 
      android:id="@+id/itemName"
      android:layout_below="@id/itemImage"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_centerHorizontal="true"/>
　　    　　    
</RelativeLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <GridView
        android:id="@+id/gridView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:horizontalSpacing="2dp"
        android:numColumns="3"
        android:verticalSpacing="2dp" />

</LinearLayout>

package com.example.androidgridview;

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

import android.R.string;
import android.os.Bundle;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.BitmapFactory.Options;
import android.view.Menu;
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 {

    private GridView gridView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        gridView = (GridView) this.findViewById(R.id.gridView);
        
        
        List<Map<String, Object>> item = getData();
        // SimpleAdapter对象，匹配ArrayList中的元素
        SimpleAdapter simpleAdapter = new SimpleAdapter(this, item, R.layout.gridviewitem, new String[] { "itemImage", "itemName" }, new int[] { R.id.itemImage, R.id.itemName });
        gridView.setAdapter(simpleAdapter);

        // 添加点击事件
        gridView.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
                int index = arg2 + 1;// id是从0开始的，所以需要+1
                Toast.makeText(getApplicationContext(), "你按下了选项：" + index, 0).show();
            }
        });

    }

    /**
     * 将图标图片和图标名称存入ArrayList中
     * 
     * @return
     */
    private List<Map<String, Object>> getData() {
        List<Map<String, Object>> items = new ArrayList<Map<String, Object>>();

        int[] listImg = new int[] { R.drawable.browser, R.drawable.email, R.drawable.camera, R.drawable.clock, R.drawable.contacts, R.drawable.gallery, R.drawable.gmail, R.drawable.gtalk, R.drawable.maps, R.drawable.market, R.drawable.messages, R.drawable.phone, R.drawable.voice, R.drawable.music, R.drawable.calender };
        String[] listName = new String[] { "九宫blue", "九宫email", "九宫firfox", "九宫gongju", "九宫heguo", "九宫kaiguan", "九宫letv", "九宫libray", "九宫list", "九宫luxiang", "九宫main", "九宫ooo", "九宫twite", "九宫voda", "九宫wifi" };
        for (int i = 0; i < listImg.length; i++) {
            Map<String, Object> item = new HashMap<String, Object>();
            item.put("itemImage", listImg[i]);
            item.put("itemName", listName[i]);
            items.add(item);
        }
        return items;

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}