PreferenceActivity 아이템 layout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center_vertical"
    android:minHeight="?android:attr/listPreferredItemHeight"
    android:orientation="vertical"
    android:paddingRight="?android:attr/scrollbarSize" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="9"
            android:orientation="vertical"
            android:layout_marginLeft="15dp" >

            <TextView
                android:id="@+android:id/title"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:ellipsize="marquee"
                android:fadingEdge="horizontal"
                android:singleLine="true"
                android:textAppearance="?android:attr/textAppearanceLarge"
                android:textColor="#000000" />

            <TextView
                android:id="@+android:id/summary"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:maxLines="4"
                android:textAppearance="?android:attr/textAppearanceSmall"
                android:textColor="#999999" />
        </LinearLayout>

        <!-- Preference should place its actual preference widget here. -->

        <LinearLayout
            android:id="@+android:id/widget_frame"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center_vertical"
            android:orientation="vertical" />
    </LinearLayout>

</LinearLayout>