activity_maps.xml

<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MapsActivity" >

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >

    <com.h6ah4i.android.widget.verticalseekbar.VerticalSeekBarWrapper
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_marginBottom="8dp"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        >

        <com.h6ah4i.android.widget.verticalseekbar.VerticalSeekBar
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:id="@+id/verticalSeekBar"
            android:progress="12"
            android:max="15"
            android:splitTrack="false"
            app.seekBarRotation="CW270"
            />


    </com.h6ah4i.android.widget.verticalseekbar.VerticalSeekBarWrapper>

</RelativeLayout>


</fragment>