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"));





		

	}



}