android九宫格实现

android九宫格实现，开始以为很复杂，其实只要知道了如何布局就很简单了。
先分析一下原理：
1：我们需要先定义一个主布局文件，宽度和列数用自适应的
     android:numColumns="auto_fit"
     android:stretchMode="columnWidth"
2：在定义一个子布局，子布局主要是控制九宫格每格的布局，例子是图文垂直布局。
3：在代码里面用SimpleAdapter将数据复制给布局文件，循环布局，就实现了九宫格
直接上代码：android九宫格主布局文件main.xml
Java代码 
<?xml version="1.0" encoding="utf-8"?>  
<GridView xmlns:android="http://schemas.android.com/apk/res/android" 
     android:id="@+id/gridView1" 
     android:layout_width="fill_parent" 
     android:numColumns="auto_fit" 
     android:stretchMode="columnWidth"   
     android:columnWidth="75dp" 
     android:gravity="center" 
     android:layout_height="fill_parent">  
</GridView> 

<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/gridView1"
     android:layout_width="fill_parent"
     android:numColumns="auto_fit"
     android:stretchMode="columnWidth"
     android:columnWidth="75dp"
     android:gravity="center"
     android:layout_height="fill_parent">
</GridView>
android九宫格子布局文件layout_gridview_item.xml
Java代码 
<?xml version="1.0" encoding="utf-8"?>  
<RelativeLayout android:id="@+id/relativeLayout1"   
    android:layout_width="fill_parent"   
    android:layout_height="wrap_content"   
    xmlns:android="http://schemas.android.com/apk/res/android">  
        <ImageView android:id="@+id/imageView_ItemImage"   
         android:layout_width="wrap_content" 
         android:src="@drawable/icon"   
         android:layout_height="wrap_content"   
         android:layout_centerHorizontal="true" 
         >  
         </ImageView>  
        <TextView android:id="@+id/textView_ItemText"   
        android:text="TextView"   
        android:layout_width="wrap_content" 
         android:layout_height="wrap_content"   
         android:layout_below="@+id/imageView_ItemImage" 
         android:layout_centerHorizontal="true" 
          >  
          </TextView>  
    </RelativeLayout> 

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:id="@+id/relativeLayout1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    xmlns:android="http://schemas.android.com/apk/res/android">
        <ImageView android:id="@+id/imageView_ItemImage"
         android:layout_width="wrap_content"
         android:src="@drawable/icon"
         android:layout_height="wrap_content"
         android:layout_centerHorizontal="true"
         >
         </ImageView>
        <TextView android:id="@+id/textView_ItemText"
        android:text="TextView"
        android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_below="@+id/imageView_ItemImage"
         android:layout_centerHorizontal="true"
          >
          </TextView>
    </RelativeLayout>
android九宫格代码文件：
Java代码 
package com.mixian.activity;  
 
import java.util.ArrayList;  
import java.util.HashMap;  
import java.util.List;  
 
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 GridLayoutActivity extends Activity {  
    /** Called when the activity is first created. */ 
    private GridView _gridView1;  
 
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.main);  
        _gridView1 = (GridView) findViewById(R.id.gridView1);  
        List<HashMap<String, Object>> lst = new ArrayList<HashMap<String, Object>>();  
        for (int i = 0; i < 12; i++) {  
            HashMap<String, Object> map = new HashMap<String, Object>();  
            map.put("itemImage", R.drawable.icon);  
            map.put("itemText", "item" + i);  
            lst.add(map);  
        }  
 
        SimpleAdapter adpter = new SimpleAdapter(this, lst,  
                R.layout.layout_gridview_item, // 指定 子项的布局文件的ID  
                new String[] { "itemImage", "itemText" }, // 指定 数据的列  
                new int[] { R.id.imageView_ItemImage, R.id.textView_ItemText });// 指定数据的列对应到的  
                                                                                // 绑定的目标控件  
        _gridView1.setAdapter(adpter);  
        _gridView1.setOnItemClickListener(onclickcistener);  
    }  
 
    private OnItemClickListener onclickcistener = new OnItemClickListener() {  
 
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,  
                long arg3) {  
            Object obj = _gridView1.getAdapter().getItem(arg2);  
            HashMap<String, Object> map = (HashMap<String, Object>) obj;  
            String str = (String) map.get("itemText");  
 
            Toast.makeText(getApplicationContext(), "" + str, 0).show();  
 
        }  
 
    };  
 
}