<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:orientation="vertical"    android:gravity="center_horizontal">    <GridView        android:id="@+id/gridView"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:horizontalSpacing="2pt"        android:verticalSpacing="2pt"        android:gravity="center"        android:numColumns="4" >    </GridView>    <ImageSwitcher        android:id="@+id/imageSwitcher1"        android:layout_width="300dp"        android:layout_height="300dp"        android:layout_gravity="center_horizontal"        android:inAnimation="@android:anim/fade_in"        android:outAnimation="@android:anim/fade_out"         >    </ImageSwitcher> </LinearLayout>

package com.example.imageswitcher;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.view.ViewGroup.LayoutParams;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.GridView;import android.widget.ImageSwitcher;import android.widget.ImageView;import android.widget.SimpleAdapter;import android.widget.ViewSwitcher.ViewFactory;public class MainActivity extends Activity {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};    ImageSwitcher switcher;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        List<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);        }        switcher=(ImageSwitcher) findViewById(R.id.imageSwitcher1);        switcher.setFactory(new ViewFactory(){            @Override            public View makeView() {                ImageView imageView=new ImageView(MainActivity.this);                imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);                imageView.setLayoutParams(new ImageSwitcher.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));                return imageView;            }                    });        SimpleAdapter simpleAdapter=new SimpleAdapter(this, listItems, R.layout.cell, new String[]{"image"}, new int[]{R.id.image1});    GridView grid=(GridView) findViewById(R.id.gridView);    grid.setAdapter(simpleAdapter);    grid.setOnItemSelectedListener(new OnItemSelectedListener(){        @Override        public void onItemSelected(AdapterView<?> parent, View view,                int position, long id) {            switcher.setImageResource(imageIds[position]);        }        @Override        public void onNothingSelected(AdapterView<?> parent) {        }            });    grid.setOnItemClickListener(new OnItemClickListener(){        @Override        public void onItemClick(AdapterView<?> parent, View view, int position,                long id) {            switcher.setImageResource(imageIds[position]);        }});    }}