title: setMinDate() for DatePicker doesn't work
body: <pre><code>DatePicker datepicker = (DatePicker) view.findViewById(R.id.ad_date_picker);
  datepicker.setMinDate(Calendar.getInstance().getTimeInMillis());
  </code></pre>
  
  <p>It just doesn't work. It works only in the xml (<code>android:minDate="mm/dd/yyyy"</code>), but I need to set the minimum date dynamically to the current day.
  My minimum API is 11.</p>