GridView九宫图

了解下

<!--android:numColumns="auto_fit"--列数设置为自动；
android:columnWidth="90dp"--每列的列宽，也就是item的宽度
android:verticalSpacing="1dp"--两行之间的边距
android:horizontalSpacing="1dp"--两列之间的边距
android:stretchMode="columnWidth"--缩放与列宽大小同步 -->

先创建res/layou下的gridview_mian.xml和gridview_item.xml分别如下

<?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" >
<GridView
        android:id="@+id/gridview_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:numColumns="auto_fit"
        android:verticalSpacing="1dp"
        android:horizontalSpacing="1dp"
        android:columnWidth="90dp"
        android:stretchMode="columnWidth"
        android:gravity="center"
        />
</LinearLayout>

<?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" >
     <ImageView
       android:id="@+id/imageview_id"
       android:layout_width="100dp"
       android:layout_height="100dp"
     >
    </ImageView>
    <TextView
        android:id="@+id/textview_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
      />

</LinearLayout>

activity.java

package com.example.gridview2;

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

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Gallery;
import android.widget.GridView;
import android.widget.SimpleAdapter;
import android.widget.Toast;

public class MainActivity extends Activity implements OnItemClickListener{
	private int[]imageID={
			R.drawable.logo1,R.drawable.logo2,
			R.drawable.logo3,R.drawable.logo4,
			R.drawable.logo5,R.drawable.logo6,
			R.drawable.logo7,R.drawable.logo8,
			R.drawable.logo9
	};

	private GridView gridview;
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.gridview_main);
		gridview=(GridView)findViewById(R.id.gridview_id);
		//生成动态数组，并且转入数据
		ArrayList<HashMap<String, Object>>list=new ArrayList<HashMap<String,Object>>();
		for(int i=0;i<9;i++){
			HashMap<String, Object>map=new HashMap<String, Object>();
			map.put("ItemImage",imageID[i]);
			map.put("itemtext","Item"+String.valueOf(i));
			list.add(map);
			}
		//生成适配器的ImageItem <====> 动态数组的元素，两者一一对应
		SimpleAdapter adapter=new SimpleAdapter(this, list, R.layout.gridview_item, new String[]{"ItemImage","itemtext"},
				new int[]{R.id.imageview_id,R.id.textview_id});
		gridview.setAdapter(adapter);//添加并且显示
		gridview.setOnItemClickListener(this);//添加消息处理
	}

	@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;
	}

	@Override
	public void onItemClick(AdapterView<?> parent, View view, int position, long id){
		  HashMap<String, Object>  item=(HashMap<String, Object>)parent.getItemAtPosition(position);
		              setTitle((String)item.get("itemtext"));

	}

}