android > layout >GridView (九宫格)

先是 mian.xml 这个是 布局 就是 GridView

<?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:scrollbars="vertical"
    android:scrollbarStyle="outsideInset"
    android:gravity="center" >

</GridView>

然后是 list 内部的 布局  , main_list.xml

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

然后是 主 Activity 

package sp.mft;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.HashMap;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.SimpleAdapter;

public class SpActivity extends Activity {
    /** Called when the activity is first created. */
	private GridView gridview;
    @Override
    public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);          
        
       gridview = (GridView)findViewById(R.id.gridview);
        	
       ArrayList<HashMap<String, Object>> lstImageItem = new ArrayList<HashMap<String, Object>>();  
       for(int i=0;i<20;i++)  
       {  
          HashMap<String, Object> map = new HashMap<String, Object>();  
          map.put("ItemImage", R.drawable.ic_launcher);//添加图像资源的ID  
          map.put("ItemText", "NO."+String.valueOf(i));//按序号做ItemText   
          lstImageItem.add(map);  
        }  
         
        SimpleAdapter saImageItems = new SimpleAdapter(SpActivity.this,lstImageItem,
        		R.layout.main_list, 
        		new String[]{"ItemImage","ItemText"},
        		new int[]{R.id.ItemImage,R.id.ItemText});
        
        gridview.setAdapter(saImageItems);
        
        gridview.setOnItemClickListener(new ItemClickListener());

        //\\         

    } 
    
    
    class ItemClickListener implements OnItemClickListener{
    	public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
    			long arg3) {
    		// TODO Auto-generated method stub
    		HashMap<String, Object> item=(HashMap<String, Object>) arg0.getItemAtPosition(arg2);
    		setTitle((String)item.get("ItemText")); 
    	}
    }
    
    
    
    
    
}

From:http://blog.csdn.net/hellogv/article/details/4567095