Android shape with gradient border and shadow

Here you go

Create your layout

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#c8c0c0"
    android:orientation="vertical">


    <LinearLayout
        android:layout_width="120dp"
        android:layout_height="120dp"
        android:layout_centerInParent="true"
        android:background="@drawable/my_rectangle">

    </LinearLayout>

</RelativeLayout>

Create my_rectangle.xml file inside drawable folder

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle">
            <gradient
                android:angle="270"
                android:endColor="#000000"
                android:startColor="#FFFFFF" />
            <corners android:radius="10dp" />
            <padding
                android:bottom="5dp"
                android:left="5dp"
                android:right="5dp"
                android:top="5dp" />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle">
            <solid android:color="#e95d11" />
            <corners android:radius="10dp" />
            <size
                android:width="50dp"
                android:height="50dp" />
        </shape>
    </item>
</layer-list>

The result

Notes

1. I made it a 120 * 120 square, change the dimensions to make it rectangle
2. I made the radius of the rounded corner as 10dp, change it if you want
3. I made the padding as 5dp, you may change it as well

Cheers