title: How to use NumberPicker in Android app with API 7?
body: <p>The minimum sdk of my app is 7, but I can use DialogFragment which is from sdk version 11, because it is in the support library which is in my lib directory.</p>
  
  <p>I'd like to make something like this example: <a href="http://developer.android.com/guide/topics/ui/controls/pickers.html" rel="nofollow noreferrer">http://developer.android.com/guide/topics/ui/controls/pickers.html</a></p>
  
  <p>But I want to use the <a href="http://developer.android.com/reference/android/widget/NumberPicker.html" rel="nofollow noreferrer">NumberPicker</a> widget, which is from sdk version 11 too, but my app does not allow this. Do I have to add other support library?</p>
  
  <p>How can I use this component?</p>
  
  <p>Thank you.</p>