How do I add a margin to a stroke in a custom drawable?-CodePudding

I have a drawable which is a circle with a stroke. How do I add a margin to that stroke?

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="oval">
            <solid android:color="@color/black" />
            <stroke
                android:width="3dp"
                android:color="@android:color/red" />
        </shape>
    </item>
</layer-list>

This is what I want:

I've tried adding another <item> with a stroke but that doesn't work

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
  <item>  
    <stroke
         android:width="3dp"
         android:color="@android:color/blue" />
       
    </item>
    <item>
        <shape android:shape="oval">
            <solid android:color="@color/black" />
            <stroke
                android:width="3dp"
                android:color="@android:color/red" />
        </shape>
    </item>
</layer-list>

Also tried adding it in the same <shape/> tag

<item>
        <shape android:shape="oval">
            <solid android:color="@color/black" />
            <stroke
                android:width="3dp"
                android:color="@android:color/blue" />
            <stroke
                android:width="3dp"
                android:color="@android:color/red" />
        </shape>
    </item>

I've also tried adding dp to the <item> tag

<item
        android:left="6dp"
        android:top="6dp"
        android:bottom="6dp"
        android:right="6dp">

but that only creates margin from the viewport to the drawable

Could someone help me please?

CodePudding user response：

Try this :

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="oval">
            <solid android:color="@color/black" />
        </shape>
    </item>
    <item
        android:bottom="10dp"
        android:left="10dp"
        android:right="10dp"
        android:top="10dp">
        <shape android:shape="oval">
            <stroke
                android:width="10dp"
                android:color="@android:color/red" />
        </shape>
    </item>
</layer-list>