android - FramLayout : Fill empty space -

i have 3 framelayout in layout, first , third have fixed height (wrap_content of child views).

and want second framelayout fill remaining space between first , third element.

my xml :

<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/root" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical">  <framelayout     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:gravity="center"     android:orientation="horizontal" >      // ... childs views fixed height </framelayout>  <framelayout     android:layout_width="match_parent"     android:layout_height="0dp" <!-- fill remaining space -->     android:layout_marginbottom="5dp"     android:layout_margintop="5dp" >      // ... childs views match_parent height </framelayout>  <framelayout     android:layout_width="match_parent"     android:layout_height="wrap_content" >      // ... childs view fixed height </framelayout>  </linearlayout> 

you can use layout_weight="1" property central framelayout, leaving 0dip height. take space left other two