Removing status and title bars in an Android app (suggested method)

I discovered that the status and title bars can be removed in an Android app by inserting one simple line in the manifest xml file. Feel free to try this out and let's discuss if this does not work for you.

<activity android:name=".YOUR_ACTIVITY_NAME"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>