title: Android ring shape for radio button
body: <p>I need to create 2 ring shapes for my radio buttons:</p>
  
  <ol>
  <li>white circle</li>
  <li>white circle with another circle inside it with a different color</li>
  </ol>
  
  <p>I dont have much clue on how to do this.
  What I tried so far:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;selector xmlns:android="http://schemas.android.com/apk/res/android"&gt;
  
      &lt;item android:state_checked="false"&gt;&lt;shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="ring"&gt;
              &lt;android:solid android:color="@color/white" /&gt;
  
              &lt;android:size android:height="10dp" android:width="10dp" /&gt;
  
              &lt;corners android:radius="10dp" /&gt;
          &lt;/shape&gt;&lt;/item&gt;
  
  &lt;/selector&gt;
  
  &lt;RadioButton
                          android:layout_width="wrap_content"
                          android:layout_height="wrap_content"
                          android:button="@drawable/radio_shape_unchecked"
                          android:checked="false"
                          android:text="Persoana fizica" /&gt;
  </code></pre>
  
  <p><a href="http://i.stack.imgur.com/mltby.png" rel="noreferrer">http://i.stack.imgur.com/mltby.png</a></p>