GridLayout و ScrollView در اندروید

<?xml version="1.0" encoding="utf-8"?>
<GridLayout xmlns:android="http://schemas.android.com/apk/res/andro
android:id="@+id/GridLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:columnCount="4"
android:useDefaultMargins="true" >
<TextView
android:layout_column="0"
android:layout_columnSpan="3"
android:layout_gravity="center_horizontal"
android:layout_marginTop="40dp"
android:layout_row="0"
android:text="User Credentials"
android:textSize="32dip" />
<TextView
android:layout_column="0"
android:layout_gravity="right"
android:layout_row="1"
android:text="User Name: " >
</TextView>
<EditText
android:id="@+id/input1"
android:layout_column="1"
android:layout_columnSpan="2"
android:layout_row="1"
android:ems="10" />
<TextView
android:layout_column="0"
android:layout_gravity="right"
android:layout_row="2"
android:text="Password: " >
</TextView>
<EditText
android:id="@+id/input2"
android:layout_column="1"
android:layout_columnSpan="2"
android:layout_row="2"
android:inputType="textPassword"
android:ems="8" />
<Button
android:id="@+id/button1"
android:layout_column="2"
android:layout_row="3"
android:text="Login" />
</GridLayout>

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:orientation="vertical" >
<TextView
android:id="@+id/TextView01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="8dip"
android:paddingRight="8dip"
android:paddingTop="8dip"
android:text="This is a header" android:textAppearance="?android:attr/textAppearanceLarge" >
</TextView>
</ScrollView>