android - Correct RelativeLayout usage please -

i have layout listview item , it's displayed incorrectly (book descr goes on last update date). can please me fix?

if set

 android:layout_above="@+id/lastupdateddt"  

to bookdescr item whole text disappears...

edit: i've updated sample according comments

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:orientation="vertical">  <relativelayout     android:layout_width="match_parent"     android:layout_height="match_parent"     android:descendantfocusability="blocksdescendants"     android:layout_margin="10dp"     android:background="@drawable/big_card_details"     android:clickable="true"     android:focusable="false">  <checkbox     android:id="@+id/icon"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     style="?android:attr/starstyle"     android:layout_margintop="10dp"     android:layout_alignparentleft="true"     android:layout_alignparentstart="true"     android:layout_marginleft="10dp" />      <textview         android:id="@+id/booktitle"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="book title"         android:textsize="16sp"         android:layout_alignbaseline="@id/icon"         android:layout_alignparenttop="true"         android:layout_torightof="@id/icon" />      <textview         android:id="@+id/booksize"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:gravity="center_vertical"         android:text="470k"         android:layout_alignbaseline="@id/icon"         android:textsize="16sp"         android:layout_alignparentright="true"         android:layout_marginright="10dp" />  <textview     android:id="@+id/lastupdateddt"     android:layout_width="match_parent"     android:layout_height="26dip"     android:singleline="true"     android:text="updated 27.04.2014 17.10"     android:textsize="12sp"      android:layout_alignparentright="true"     android:layout_alignparentend="true"     android:layout_alignparentbottom="true"     android:layout_alignleft="@id/icon" /> <textview         android:id="@+id/bookdescription"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:singleline="false"     android:textsize="10sp"     android:text="here should long description"     android:layout_alignend="@id/booksize"     android:layout_below="@+id/booktitle"     android:layout_margintop="20dp"     android:layout_alignleft="@+id/icon" />        <!-- button trigger sliding of expandable view -->      <imagebutton         android:id="@+id/expand_details_button"         android:src="@drawable/slide_button_details"         android:layout_aligntop="@id/lastupdateddt"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:background="@null"         android:layout_alignbaseline="@id/lastupdateddt"         android:layout_alignparentbottom="true"         android:layout_alignright="@id/booksize"         android:layout_alignend="@id/booksize" />      </relativelayout>  <!-- expandable view hidden , slide out when more button pressed --> <linearlayout     android:id="@+id/details_expandable"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:baselinealigned="false"     android:orientation="horizontal"     >     <!-- put whatever want in expandable view -->     <button         android:layout_width="match_parent"         android:layout_weight="0.3"         android:drawabletop="@drawable/ic_action_read"         android:text="@string/readbook"         style="@style/slidebuttontheme" />     <button         android:layout_width="match_parent"         android:layout_weight="0.3"         android:drawabletop="@drawable/ic_action_open_browser"         style="@style/slidebuttontheme"         android:text="@string/openinbrowser" />  </linearlayout> </linearlayout> 

hope aware child view in relativelayout need placed below/above of sibling views or aligned parent.

the problem here , lastupdateddt aligned parent bottom , since parent relativelayout height set wrap_content height decided based on child views , lastupdateddt placed @ bottom depends on parent height, overlap sibling view.

fix : set android:layout_below="@+id/bookdescription" lastupdateddt textview , lastupdateddt placed bottom of parent , below bookdescription textview sibling.