title: Open Dialog from Notification
body: <p>I have a notification displayed. Now I want this to happen:</p>
  
  <p>When I click on the notification, I would like to open a Dialog, where I print only 1 string.</p>
  
  <p>Now, I can't work it out, what to do here, when I create notification:</p>
  
  <pre><code>...
  Intent notificationIntent = new Intent(context, {how to open dialog}); 
  ...
  </code></pre>
  
  <p>Then 1 button, for example "OK", which will close the dialog.</p>
  
  <p>Please, help me.</p>
  
  <p>Thanks.</p>