package com.example.configchangesample;

import android.os.Bundle;

import android.app.Activity;

import android.content.res.Configuration;

import android.util.Log;

import android.view.Menu;

import android.widget.TextView;

public class MainActivity extends Activity {

    TextView textView1;

    String TAG = "configchangesample";

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        textView1 = (TextView)this.findViewById(com.example.configchangesample.R.id.textView1);

        textView1.setText("init");

        Log.i(TAG, "onCreate");

    }

    @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 onConfigurationChanged(Configuration newConfig) {

        super.onConfigurationChanged(newConfig);

        textView1.setText("onConfigurationChanged");

        Log.i(TAG, "onConfigurationChanged:" + newConfig.orientation);

        if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE){

            textView1.setText("ORIENTATION_LANDSCAPE");

        } else {

            textView1.setText("ORIENTATION_PORTRAIT");

        }

    }

}

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

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

    package="com.example.configchangesample"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="18" />

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name="com.example.configchangesample.MainActivity"

            android:label="@string/app_name"

            android:configChanges="orientation|screenSize" >

            <intent-filter>

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

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

            </intent-filter>

        </activity>

    </application>

</manifest>