session-android/res/layout/emoji_drawer.xml

<?xml version="1.0" encoding="utf-8"?>

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
             android:orientation="vertical"
             android:layout_width="match_parent"
             android:layout_height="match_parent">

    <android.support.v4.view.ViewPager
            xmlns:android="http://schemas.android.com/apk/res/android"
            android:id="@+id/emoji_pager"
            android:visibility="visible"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="#ff333333"
            android:minHeight="100dip">

        <android.support.v4.view.PagerTabStrip
                android:id="@+id/emoji_tab_strip"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_gravity="top"
                android:background="#ff333333"
                android:textColor="#fff"
                android:paddingTop="3dp"
                android:paddingBottom="3dp"
                android:paddingLeft="32dip"
                android:paddingRight="32dip"/>

    </android.support.v4.view.ViewPager>

</FrameLayout>