Viewpager advanced search

I have implemented SearchView inside my android app that uses a toolbar, SlidingTabLayout and a ViewPager that contains fragments.

but the SearchView collapsed and reset the TextView which time I scroll to another slice

how can I keep the SearchView expanded while scrolling to search for multiple fragments

@Override
public boolean onCreateOptionsMenu(Menu menu) {
     getMenuInflater().inflate(R.menu.searchmenu, menu);
     mSearchMenuItem = menu.findItem(R.id.action_search);
     searchView = (SearchView) MenuItemCompat.getActionView(mSearchMenuItem);
     searchView.setOnQueryTextListener(this);
     return true;
}

      

        
        
        
      

    

Layout:

<item
    android:id="@+id/action_search"
    android:icon="@android:drawable/ic_menu_search"
    android:title="@string/search"
    app:showAsAction="always|collapseActionView"
    app:actionViewClass="android.support.v7.widget.SearchView" />