Create spinner with strings taken from resource folder and on changing the spinner value, image will change.

/*Create spinner with strings taken from resource folder and on changing the spinner value, image will change.*/

File Name: AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest 

    xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.example.hp.progfive" >

    <application

        android:allowBackup="true"

        android:icon="@mipmap/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme"

        android:largeHeap="true"

        android:hardwareAccelerated="false">

        <activity

            android:name=".MainActivity"

            android:label="@string/app_name" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>                

File Name: activity_main.xml

<RelativeLayout

    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:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    android:paddingBottom="@dimen/activity_vertical_margin"

    tools:context=".MainActivity">

    <Spinner

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:id="@+id/sp"

        android:background="#F0F0"

        />

    <ImageView

        android:layout_width="fill_parent"

        android:layout_height="fill_parent"

        android:id="@+id/background"

        android:scaleType="fitXY"

        android:layout_below="@+id/sp"

        />

</RelativeLayout>    

File Name: MainActivity.java

package com.ducskecode.lifecycle;

import android.app.Activity;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.ImageView;

import android.widget.Spinner;

import android.widget.Toast;

import android.widget.AdapterView.OnItemSelectedListener;

public class MainActivity extends Activity implements OnItemSelectedListener {

    Spinner spin;

    ImageView layout;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        spin=(Spinner)findViewById(R.id.sp);

        String[] objects = { "Image One", "Image Two", "Image Three" };

        ArrayAdapter adapter = new ArrayAdapter(

                getApplicationContext(),android.R.layout.simple_list_item_1 ,objects);

        spin.setAdapter(adapter);

        spin.setOnItemSelectedListener(this);

            layout = (ImageView) findViewById(R.id.background);

    }

    public void onItemSelected(AdapterView parent, View view, int pos, long id) {

        Toast.makeText(getApplicationContext(),spin.getItemAtPosition(pos).toString(),                          Toast.LENGTH_LONG).show();

        int position= spin.getSelectedItemPosition();

        switch(position){

            case 0:

                layout.setImageResource(R.drawable.photo);

                break;

            case 1:

                layout.setImageResource(R.drawable.img1);

                break;

            case 2:

                layout.setImageResource(R.drawable.img2);

                break;

        }

    }

    @Override

    public void onNothingSelected(AdapterView arg0) {

    }

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.menu_main, menu);

        return true;

    }

    @Override

    public boolean onOptionsItemSelected(MenuItem item) {

        int id = item.getItemId();

        if (id == R.id.action_settings) {

            return true;

        }

        return super.onOptionsItemSelected(item);

    }

}        

output: