custom_tab_view.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    tools:context="com.example.robert.materialtabs.MainActivity">

<com.example.robert.materialtabs.SlidingTabLayout
    android:layout_width="match_parent"
    android:layout_height="?android:actionBarSize"
    android:id="@+id/tabs">

</com.example.robert.materialtabs.SlidingTabLayout>
    <android.support.v4.view.ViewPager
        android:layout_below="@+id/tabs"
        android:id="@+id/viewPager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></android.support.v4.view.ViewPager>
</RelativeLayout>