Circle Shape

<?xml version="1.0" encoding="utf-8"?>

<shape xmlns:android="http://schemas.android.com/apk/res/android"
        android:shape="oval"> <solid android:color="@color/colorPrimaryDark"/>

        <!--solid android:color="?attr/colorPrimaryDark" /-->
        <size android:width="36dp" android:height="36dp" />

</shape>