每天記錄學習的新知識 ：使用shape繪製Drawable文件

圓環嵌套圓形

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <item>

        <shape android:shape="oval">

            <corners android:radius="31dp" />

            <stroke
                android:width="1dp"
                android:color="#4FA1F8" />

            <size
                android:width="31dp"
                android:height="31dp" />

        </shape>

    </item>

    <item
        android:bottom="3dp"
        android:left="3dp"
        android:right="3dp"
        android:top="3dp">

        <shape android:shape="oval">

            <solid android:color="@color/app_blue" />

            <size
                android:width="25dp"
                android:height="25dp" />

            <corners android:radius="25dp" />

        </shape>

    </item>

</layer-list>