another-app/res/layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.uber.okbuck.example.anotherapp.CustomView
        android:id="@+id/mTvTest"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="test"
        android:textColor="@color/button_material_light"
        android:textSize="40sp" />
</LinearLayout>