Android开发中使用GridView实现数据网格显示

UsingGridView.java代码
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package com.sinaapp.ssun.girdview;

import java.util.*;

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 UsingGridViewActivity extends Activity {
    private GridView gridView;
   
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);      
       
        gridView = (GridView) this.findViewById(R.id.gridView);      
        show();
    }

    private void show() {
        List<HashMap<String, Object>> data = new ArrayList<HashMap<String, Object>>();
        for(int i=0; i<12; i++){
            HashMap<String, Object> hm = new HashMap<String, Object>();
            hm.put("image", R.drawable.ic_launcher);
            hm.put("name", "NO." + i);
            data.add(hm);
        }
       
        SimpleAdapter adapter = new SimpleAdapter(this, data, R.layout.item,
                                        new String[]{"image","name"},new int[]{R.id.imageView,R.id.textView});
       
        gridView.setAdapter(adapter);
       
        gridView.setOnItemClickListener(new OnItemClickListener(){

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                HashMap<String, Object> hm = (HashMap<String, Object>)parent.getItemAtPosition(position);
                Toast.makeText(UsingGridViewActivity.this, hm.get("name").toString(), Toast.LENGTH_LONG).show();
            }});
    }
}


//该代码片段来自于: http://www.sharejs.com/codes/java/6206
main.xml文件：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android "
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
 
    <GridView
        android:id="@+id/gridView"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:numColumns="3" >
    </GridView>
     
</LinearLayout>


//该代码片段来自于: http://www.sharejs.com/codes/java/6206
item.xml文件：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android "
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
 
    <ImageView
        android:id="@+id/imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_launcher"
        android:layout_gravity="center_horizontal"/>
 
    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"/>
     
</LinearLayout>