activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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=".MainActivity">
    <com.innovattic.rangeseekbar.RangeSeekBar
        android:background="@color/colorAccent"
        android:layout_width="match_parent"
        android:layout_height="40dp" />
</FrameLayout>