Androidでフルスクリーンを設定する方法

1,onCreate関数の変更

package com.android.myfirstandroidapp;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.LinearLayout;


public class MyFirstAndroidAppActivity extends Activity {
	
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);       
        
      //       
      requestWindowFeature(Window.FEATURE_NO_TITLE);
      //         
      getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
      		
      //       main.xml   
      setContentView(R.layout.main);
        
        final Button btn = (Button)findViewById(R.id.button1);
        btn.setOnClickListener(new View.OnClickListener() {			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Toast.makeText(MyFirstAndroidAppActivity.this, "Buttton", Toast.LENGTH_SHORT).show();				
			}
		});
    }
}

2,AndroidManifestを修正する.xmlファイル
1行の構成を追加:android:theme="@android:style/theme.NoTitleBar.Fullscreen"

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.android.myfirstandroidapp"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="8" />

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".MyFirstAndroidAppActivity"
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
                  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>