登録・解除を確認するのでそれらのメニューを有効化する2

options_menu.xml

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

    <!-- Typically, an application registers automatically, so options below
         are disabled. Uncomment them if you want to manually register or
         unregister the device (you will also need to uncomment the equivalent
         options on DemoActivity.onOptionsItemSelected())
    -->
    <!-- 以下2つのitemをコメントインする -->
    <item
        android:id="@+id/options_register"
        android:title="@string/options_register">
    </item>
    <item
        android:id="@+id/options_unregister"
        android:title="@string/options_unregister">
    </item>