ViewStub not show

[shawn peter]

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <LinearLayout
        android:id="@+id/header"
        android:layout_width="fill_parent"
        android:layout_height="50dp"
        android:layout_above="@+id/txtPassword"
        android:layout_alignParentTop="true"
        android:layout_marginBottom="0dp"
        android:layout_marginTop="5dp"
        android:orientation="horizontal"
        android:padding="5dp" >

        <ViewStub
            android:id="@+id/vsHeader"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:inflatedId="@+id/header"
            android:layout="@layout/header" />
    </LinearLayout>

    <LinearLayout
        android:id="@+id/list"
        android:layout_width="fill_parent"
        android:layout_height="50dp"
        android:layout_above="@+id/txtPassword"
        android:layout_alignParentTop="true"
        android:layout_marginBottom="0dp"
        android:layout_marginTop="5dp"
        android:orientation="horizontal"
        android:padding="5dp" >

        <ListView
            android:id="@+id/list"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >
        </ListView>
    </LinearLayout>

</RelativeLayout>

above is my list view xml file.I need ViewStub to be in top,but it is not coming to top.even it is not shown.

[Steve Luke]

What is a ViewStub? Have you read its API?