How to stick Title for ViewPager to the TOP. PagerTitleStrip Android -

i have strange me issue viewpager.

i need add pagertitlestrip viewpager , put on top. try put layout_gravity = "top", reserves space on "bottom" , show title string on "top"!

when put gravitity "bottom", displays correctly.

here screens

top - http://clip2net.com/s/4wdduj

bottom - http://clip2net.com/s/4wdd8k

viewpager - green pagertitlestrip - blue pager content match_parrent - red

please me understand why happens. how stick top , dont have green space on bottom?

thank you.

here xml pager:

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" >  <android.support.v4.view.viewpager     android:id="@+id/pagertelefooninfo"     android:layout_width="wrap_content"     android:background="#1af00f"     android:layout_height="wrap_content" >      <android.support.v4.view.pagertitlestrip         android:id="@+id/pagertitlestrip"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:background="#3affef"         android:layout_gravity="top" >     </android.support.v4.view.pagertitlestrip> </android.support.v4.view.viewpager> </linearlayout> 

here activity:

public class apager extends activity {  viewpager pager; pageradapter pageradapter;  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.my_pager);      pager = (viewpager) findviewbyid(r.id.pager);     pageradapter = new mypageradapter();     pager.setadapter(pageradapter);   }   private class mypageradapter extends pageradapter {      public int getcount() {         return 1;     }      public object instantiateitem(view collection, int position) {         layoutinflater inflater = (layoutinflater) collection.getcontext()                 .getsystemservice(context.layout_inflater_service);         view view = null;         switch (position) {         case 0:             view = inflater.inflate(r.layout.fragment1, null);             ((viewpager) collection).addview(view, 0);             break;         case 1:             view = inflater.inflate(r.layout.fragment2, null);             ((viewpager) collection).addview(view, 0);             break;         }          return view;     }      @override     public charsequence getpagetitle(int position) {         return "title " + position;     }      public void destroyitem(view arg0, int arg1, object arg2) {         ((viewpager) arg0).removeview((view) arg2);     }      public boolean isviewfromobject(view arg0, object arg1) {         return arg0 == ((view) arg1);     }      public parcelable savestate() {         return null;     }     // public int getitemposition(object object) { return position_none; } }  } 

take @ viewpager layout set have works correctly strip on top:

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"           android:orientation="vertical"           android:layout_width="match_parent"           android:layout_height="match_parent">  <android.support.v4.view.viewpager     android:id="@+id/pager"     android:layout_width="match_parent"     android:layout_height="0px"     android:layout_weight="1">      <android.support.v4.view.pagertitlestrip         android:id="@+id/pager_title_strip"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_gravity="top"         android:background="#33b5e5"         android:textcolor="#fff"         android:paddingtop="4dp"         android:paddingbottom="4dp"/> </android.support.v4.view.viewpager>