Text inside tabs of a TabLayout is not centered

Use this for adjusting the text:

android:gravity="center" OR android:textAlignment="center"

you should create a custom tab .. you are using these attributes for tabLayout which will not work ... the example link you provided above uses a file named custom_tab.xml . Use that for defining your textView and put these attributes inside it.

just do like this:-

       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       app:tabMaxWidth="0dp"
       app:tabGravity="fill"