title: relative layout and listview in relative which in scrollview android
body: <p>There're an elements of textview, button and imageview..etc on the top of the layout,but the large of part has listview. It's required, when we scroll, top elemnts must scrolling too with listview. </p>
  
  <pre><code>&lt;ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  xmlns:app="http://schemas.android.com/apk/res/com.revolage.vkcommunity"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="@color/vk_white"
  android:orientation="vertical"
  tools:context="com.egay.borsh.fragments.MainActivity" &gt;
  
  &lt;RelativeLayout
      style="@style/ActionBarStyle"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:paddingBottom="@dimen/activity_vertical_margin" &gt;
  
      &lt;RelativeLayout
          android:id="@+id/action_bar_relative_layout"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:paddingBottom="@dimen/activity_vertical_margin" &gt;
  
          ......
      &lt;/RelativeLayout&gt;
  
      &lt;com.costum.android.widget.PullAndLoadListView
          android:id="@+id/main_post_list"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_below="@+id/header_linear_layout" /&gt;
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p></p>
  
  <p>but so, nothing is scrolling. </p>