android - Can not scroll and click item on gridview inside scrollview -

okay guys, have layout this

<scrollview android:id="@+id/scrollviewtree" android:layout_width="match_parent" android:layout_height="wrap_content" >  <include android:id="@+id/layoutgallery" android:layout_width="wrap_content" android:layout_height="wrap_content" layout="@layout/layout_gallery_obstruction" > </include>  </scrollview> 

and *layout_gallery_obstruction*

?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="wrap_content" >      <textview         android:id="@+id/textviewgalleryobs"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_alignbaseline="@+id/buttongalleryobs"         android:layout_alignparentleft="true"         android:layout_alignparenttop="true"         android:text="@string/obstruction_title_gallery" />      <button         android:id="@+id/buttongalleryobs"         android:layout_width="100dp"         android:layout_height="35dp"         android:layout_marginleft="30dp"         android:layout_torightof="@+id/textviewgalleryobs"         android:text="@string/obstruction_gallery_add"         android:textsize="12sp" />      <gridview         android:id="@+id/gridviewgalleryobs"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:layout_alignleft="@+id/textviewgalleryobs"         android:layout_below="@+id/buttongalleryobs"         android:columnwidth="90dp"         android:gravity="center"         android:horizontalspacing="5dp"         android:numcolumns="4"         android:stretchmode="columnwidth"         android:verticalspacing="5dp" >     </gridview>  </relativelayout> 

i using custom adapter gridview , layout cell

<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="match_parent" >      <imagebutton         android:id="@+id/imagebutton1"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_alignparentleft="true"         android:layout_alignparenttop="true"         android:background="@android:color/transparent"         android:contentdescription="@string/app_name" />  </relativelayout> 

okay problem is, can't scroll gridview , , can't click item on gridview . know how fix ? in adv . :)

enable gridview property as

android:nestedscrollingenabled="true".