<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:gravity="center_horizontal"android:orientation="vertical" ><!-- 定义一个GridView组件 --><GridViewandroid:id="@+id/gridView1"android:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="center"android:horizontalSpacing="1pt"android:numColumns="4"android:verticalSpacing="1pt" /><!-- 定义一个imageView组件 --><ImageViewandroid:id="@+id/imageView"android:layout_width="240dp"android:layout_height="240dp"android:layout_gravity="center_horizontal" /></LinearLayout>

<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="horizontal"android:layout_width="fill_parent"android:layout_height="fill_parent"android:gravity="center_horizontal"android:padding="2pt">
<ImageViewandroid:id="@+id/image1"android:layout_width="50dp" android:layout_height="50dp" />
</LinearLayout>

package com.example.gridview;import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.SimpleAdapter;public class MainActivity extends Activity {GridView grid;ImageView imageView;
int[] imageIds=new int[]{R.drawable.bomb5,R.drawable.bomb6,R.drawable.bomb7,R.drawable.bomb8,R.drawable.bomb9,R.drawable.bomb10,R.drawable.bomb11,R.drawable.bomb12,R.drawable.bomb13,R.drawable.bomb14,R.drawable.bomb15,R.drawable.bomb16
};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//创建一个List对象,List对象元素师MapList<Map<String,Object>> listItems=new ArrayList<Map<String,Object>>();for(int i=0;i<imageIds.length;i++){Map<String,Object> listItem=new HashMap<String,Object>();listItem.put("image", imageIds[i]);listItems.add(listItem);}imageView=(ImageView) findViewById(R.id.imageView);SimpleAdapter simpleAdapter=new SimpleAdapter(this,listItems,R.layout.cell, new String[]{"image"}, new int[]{R.id.image1});grid=(GridView) findViewById(R.id.gridView1);grid.setAdapter(simpleAdapter);grid.setOnItemSelectedListener(new OnItemSelectedListener(){@Overridepublic void onItemSelected(AdapterView<?> parent, View view,int position, long id) {imageView.setImageResource(imageIds[position]);}@Overridepublic void onNothingSelected(AdapterView<?> parent) {    }});grid.setOnItemClickListener(new OnItemClickListener(){@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {imageView.setImageResource(imageIds[position]);}});}}