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}@Overridepublic 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;}@Overridepublic 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"));}}