title: Can't remove padding from Activity Dialog
body: <p>I have an activity styled as a popup:</p>
  
  <pre><code>[Activity(Theme="@android:style/Theme.Dialog")]
  public class GameOverPopup : Activity
  </code></pre>
  
  <p>But I'm always stuck with a white padding around my controls (ignore the black border, it's not part of the popup):</p>
  
  <p><img src="https://i.stack.imgur.com/hNk06.png" alt="enter image description here"></p>
  
  <p>I've tried setting the  padding, margin, etc. to 0dp but always have that extra space.</p>
  
  <p>How can I remove it?</p>
  
  <p><strong>UPDATE:</strong></p>
  
  <p>So I've tried the following according to suggestions:</p>
  
  <p>In Styles.xml:</p>
  
  <pre><code>&lt;style name="PopupDialog" parent="android:style/Theme.Dialog"&gt;
     &lt;item name="android:padding"&gt;0dp&lt;/item&gt;
  &lt;/style&gt;
  </code></pre>
  
  <p>And then in my Activity (in the OnCreate Override):</p>
  
  <pre><code>SetTheme(Resource.Style.PopupDialog);
  </code></pre>
  
  <p>Yet I still have the padding  :(</p>