Android Device Orientation Changed

안드로이드에서 기기의 방향이 변경되었을 때 실행되는 콜백 메소드 사용 예

AndroidManifest.xml 파일에서 activity 엘리먼트의 configChanges='orientation'속성을 이용하면 기기의 방향이 변경되었을 때 Activity 클래스의 멤버 메소드인 onConfigurationChanged()를 실행할 수 있다

AndroidManifest.xml 

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.androidapp"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:configChanges="orientation"
            android:label="@string/title_activity_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

res/layout/main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/rootLayout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"  >

    <Button
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Button" />

    <Button
        android:id="@+id/button2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Button" />

</LinearLayout>

res/layout/landscape.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/rootLayout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Button" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Button" />

</LinearLayout>

MainActivity.java

package com.example.androidapp;

import android.os.Bundle;
import android.app.Activity;
import android.content.res.Configuration;
import android.util.Log;

public class MainActivity extends Activity {
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Log.i("onCreate", "onCreate실행됨");

   }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
    	super.onConfigurationChanged(newConfig);
    	int layout = 0;
    	if(newConfig.orientation==Configuration.ORIENTATION_LANDSCAPE){
    		layout = R.layout.landscape;
    	}else if(newConfig.orientation==Configuration.ORIENTATION_PORTRAIT){
    		layout = R.layout.main;
    	}
    	setContentView(layout);
    	Log.i("방향전환", newConfig.orientation+"");
    }
}