title: android: string format specify bold
body: <p>I have a string defined in <code>string.xml</code> like</p>
  
  <pre><code>&lt;string name="eventtitle"&gt;Title: %1$s &lt;/string&gt;
  </code></pre>
  
  <p>which is formatted using <code>string.format</code> . How to define the string to get only the <strong>Titel: as Bold.</strong></p>
  
  <p>Thanks in advance for the help </p>