title: Show message in Alert Dialog
body: <p>Trying to dynamically change the message of an AlertDialog. For some reason I get a blank dialog box with no message.</p>
  
  <pre><code>@Override
  protected Dialog onCreateDialog(int dialogId, Bundle args) {
  switch (dialogId) {
  case ABOUT_DIALOG:
      AlertDialog.Builder aboutDialog = new AlertDialog.Builder(this);
      return aboutDialog.create();
  }
  }
  @Override
  protected void onPrepareDialog(int dialogId, Dialog dialog, Bundle args){
  super.onPrepareDialog(dialogId, dialog, args);
  switch(dialogId){
  case ABOUT_DIALOG:
      AlertDialog aboutDialog = (AlertDialog) dialog;
      aboutDialog.setMessage("hello world");
  }
  }
  </code></pre>
  
  <p>How can I dynamically change the content of an Alert Dialog?</p>