app/src/main/res/drawable/style_primary.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:type="linear"
android:startX="85.75"
android:startY="20"
android:endX="257.25"
android:endY="20"
android:startColor="@color/primaryStart"
android:endColor="@color/primaryEnd"/>
<padding
android:bottom="8dp"
android:left="8dp"
android:right="8dp"
android:top="8dp" />
<corners
android:radius="8dp" />
</shape>