title: Going from a PreferenceScreen to a DialogPreference
body: <p>My application has a setting menu which is actually a PreferenceActivity. 
  When it's created, if a boolean value is not set I want to go to the DialogPreference which sets that.</p>
  
  <p>I tried doing it with an intent but the application force closed with this error msg:</p>
  
  <blockquote>
    <p>E/AndroidRuntime(  239):
    android.content.ActivityNotFoundException:
    Unable to find explicit activity class
    {com.xxxx/com.xxxx.xxxxPreference};
    have you declared this activity in
    your AndroidManifest.xml?</p>
  </blockquote>
  
  <p>How should I do this? It's ok to add that DialogPreference to the manifest?</p>