android LinearLayout 垂直滚动

<ScrollView 

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:scrollbars="vertical"

android:fadingEdge="vertical"

>

<LinearLayout android:id="@+id/hottopics"

android:orientation="vertical" android:layout_width="fill_parent"

android:layout_height="wrap_content" android:padding="10dip"

></LinearLayout>

</ScrollView>