Hyperrail/src/main/res/drawable/platform_train.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:bottom="0dp"
android:left="0dp"
android:right="0dp"
android:top="0dp">
<shape android:shape="oval">
<solid android:color="#78909C" />
<padding
android:bottom="0dp"
android:left="0dp"
android:right="0dp"
android:top="0dp" />
<size
android:width="50dp"
android:height="50dp" />
</shape>
</item>
</layer-list>