How to set textsize of title

[Miteshmakwana73]

android:textSize not working

<com.astuetz.PagerSlidingTabStripbottomIndicator
                    android:id="@+id/pagerTabStrip"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:background="@color/colorAccent"
                    android:textSize="@dimen/small_font"/>


                <androidx.viewpager.widget.ViewPager
                    android:id="@+id/vpDevicesTab"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent" />