[android] Change Spinner dropdown icon

Without Using ANY Drop down Using your Drop Down ICON

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

<item>
    <layer-list>
        <item>
            <shape>
               <gradient android:angle="90" android:endColor="#ffffff" android:startColor="#ffffff" android:type="linear" /><!--For gradient background-->

                <stroke android:width="1dp" android:color="#FFF" /><!--For Border background-->

                <corners android:radius="0dp" /><!--For background corner-->

                <padding android:bottom="3dp" android:left="3dp" android:right="6dp" android:top="3dp" /><!--For padding for all sides-->
            </shape>
        </item>
        <item>
            <bitmap android:gravity="center|right" android:src="@drawable/ic_down_arrow" /> // Replace with your Icon

        </item>
    </layer-list>
</item>