Android ScrollView 使用注意事项

要想达到这样的效果

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/scroller" android:layout_width="fill_parent" android:layout_height="fill_parent" android:fillViewport="true">
<LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical">
<TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:paddingLeft="6dip" android:paddingRight="6dip" android:paddingTop="6dip" android:textAppearance="?android:attr/textAppearanceMedium" android:text="Welcome to My Application"/>
<View android:layout_width="fill_parent" android:layout_height="1dip" android:background="#ff106510" android:layout_marginLeft="6dip" android:layout_marginRight="6dip" android:layout_marginTop="6dip" android:layout_marginBottom="12dip"/>
<TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1.0" android:paddingLeft="6dip" android:paddingRight="6dip" android:paddingBottom="6dip" android:text="@string/hello"/>
<LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:background="@android:drawable/bottom_bar" android:gravity="center_vertical">
<Button android:layout_width="0dip" android:layout_weight="1.0" android:layout_height="wrap_content" android:text="Accept"/>
<Button android:layout_width="0dip" android:layout_weight="1.0" android:layout_height="wrap_content" android:text="Refuse"/>
</LinearLayout>
</LinearLayout>
</ScrollView>

android:fillViewport. When set to true, this attribute causes the 
scroll view’s child to expand to the height of theScrollViewif 
needed. When the child is taller than theScrollView, the attribute 
has no effect.

set the android:layout_weight of the TextView to 1.0