Android Support Design TabLayout: Gravity Center and Mode Scrollable -

i trying use new design tablayout in project. want layout adapt every screen size , orientation, can seen correctly in 1 orientation.

i dealing gravity , mode setting tablayout as:

    tablayout.settabgravity(tablayout.gravity_center);     tablayout.settabmode(tablayout.mode_scrollable); 

so expect if there no room, tablayout scrollable, if there room, centered.

from guides:

public static final int gravity_center gravity used lay out tabs in center of tablayout.

public static final int gravity_fill gravity used fill tablayout as possible. option takes effect when used mode_fixed.

public static final int mode_fixed fixed tabs display tabs concurrently , best used content benefits quick pivots between tabs. maximum number of tabs limited view’s width. fixed tabs have equal width, based on widest tab label.

public static final int mode_scrollable scrollable tabs display subset of tabs @ given moment, , can contain longer tab labels , larger number of tabs. best used browsing contexts in touch interfaces when users don’t need directly compare tab labels.

so gravity_fill compatible mode_fixed but, @ doesn't specify gravity_center, expect compatible mode_scrollable, using gravity_center , mode_scrollable

so using scrollable in both orientations, not using gravity_center.

this expect landscape; have this, need set mode_fixed, in portrait is:

why gravity_center not working scrollable if tablayout fits screen? there way set gravity , mode dynamically (and see expecting)?

thank much!

edited: layout of tablayout:

<android.support.design.widget.tablayout     android:id="@+id/sliding_tabs"     android:layout_width="match_parent"     android:background="@color/orange_pager"     android:layout_height="wrap_content" /> 

tab gravity effects mode_fixed.

one possible solution set layout_width wrap_content , layout_gravity center_horizontal:

<android.support.design.widget.tablayout     android:id="@+id/sliding_tabs"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:layout_gravity="center_horizontal"     app:tabmode="scrollable" /> 

if tabs smaller screen width, tablayout smaller , centered because of gravity. if tabs bigger screen width, tablayout match screen width , scrolling activate.