small_sheep_android/app/src/main/res/layout/dian.xml

<?xml version="1.0" encoding="utf-8"?>
<View xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="5dp"
    android:layout_height="5dp"
    android:background="@drawable/drawable_selector_dian">

</View>