There is a style Spinner found in the internet. How does he round the corners and make the triangle red? It is necessary that the corner radius was 4dp
<?xml version="1.0" encoding="utf-8"?> <layer-list xmlns:android="http://schemas.android.com/apk/res/android"> <item> <color android:color="#fff" /> <corners android:radius="40dp" /> </item> <item android:gravity="center_vertical|right" android:right="8dp"> <layer-list> <item android:width="12dp" android:height="12dp" android:gravity="center" android:bottom="10dp"> <rotate android:fromDegrees="45" android:toDegrees="45"> <shape android:shape="rectangle"> <solid android:color="#666666" /> <stroke android:color="#aaaaaa" android:width="1dp"/> </shape> </rotate> </item> <item android:width="30dp" android:height="10dp" android:bottom="21dp" android:gravity="center"> <shape android:shape="rectangle"> <solid android:color="#fff"/> </shape> </item> </layer-list> </item> </layer-list> 