Android 中GridView上图下字、GridView显示文字

效果图如下：

代码：
gridview.xml

<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
	android:id="@+id/gridview"
	android:layout_width="fill_parent"
	android:layout_height="fill_parent"
	android:numColumns="auto_fit"
	android:verticalSpacing="10dp"
	android:horizontalSpacing="10dp"
	android:columnWidth="90dp"
	android:stretchMode="columnWidth"
	android:gravity="center" 
	/>

item.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_height="wrap_content"
	android:layout_width="fill_parent"
	android:paddingBottom="4dip"
	>
	<ImageView
		android:id="@+id/ItemImage"
		android:layout_height="wrap_content"
		android:layout_width="wrap_content"
		android:layout_centerHorizontal="true"
		/>
	<TextView
		android:id="@+id/ItemText"
		android:layout_width="wrap_content"
		android:layout_below="@+id/ItemImage"
		android:layout_height="wrap_content"
		android:layout_centerHorizontal="true"
		android:text="TextView01"
		/>
</RelativeLayout>

TestGridView.java

package com.test;

import java.util.ArrayList;
import java.util.HashMap;

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;

public class TestGridView extends Activity {
	private GridView gridview;

	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.gridview);
		
		gridview = (GridView) findViewById(R.id.gridview);

		// 生成动态数组，并且转入数据
		ArrayList<HashMap<String, Object>> lstImageItem = new ArrayList<HashMap<String, Object>>();
		for (int i = 0; i < 10; i++) {
			HashMap<String, Object> map = new HashMap<String, Object>();
			map.put("ItemImage", R.drawable.icon);// 添加图像资源的ID
			map.put("ItemText", "NO." + String.valueOf(i));// 按序号做ItemText
			lstImageItem.add(map);
		}
		// 生成适配器的ImageItem <====> 动态数组的元素，两者一一对应
		SimpleAdapter saImageItems = new SimpleAdapter(this, // 没什么解释
				lstImageItem,// 数据来源
				R.layout.item,// night_item的XML实现
				// 动态数组与ImageItem对应的子项
				new String[] { "ItemImage", "ItemText" },
				// ImageItem的XML文件里面的一个ImageView,两个TextView ID
				new int[] { R.id.ItemImage, R.id.ItemText });
		// 添加并且显示
		gridview.setAdapter(saImageItems);
		// 添加消息处理
		gridview.setOnItemClickListener(new ItemClickListener());
	}

	// 当AdapterView被单击(触摸屏或者键盘)，则返回的Item单击事件
	class ItemClickListener implements OnItemClickListener {
		public void onItemClick(AdapterView<?> arg0,// The AdapterView where the click happened
				View arg1,// The view within the AdapterView that was clicked
				int arg2,// The position of the view in the adapter
				long arg3// The row id of the item that was clicked
		) {
			// 在本例中arg2=arg3
			@SuppressWarnings("unchecked")
			HashMap<String, Object> item = (HashMap<String, Object>) arg0.getItemAtPosition(arg2);
			// 显示所选Item的ItemText
			setTitle((String) item.get("ItemText"));
		}
	}
}