title: How do I allow an iPhone user to "Move and Scale" a photo that has already been selected
body: <p>I am trying to replicate the functionality that users see when they go into edit mode for a contact for which they have already selected a photo, and then click that contact's photo.  An action sheet slides up, with options including "Take Photo", "Choose Photo", and "Edit Photo".  When you select "Edit Photo", a view comes up that shows the previously selected photo, with "Move and Scale" on top of it, and Cancel and Choose buttons at the bottom.  How do I show this "Move and Scale" view for any give UIImage?</p>
  
  <p>To make it clear - I already have "Take Photo" and "Choose Photo" working.  And I understand how to use the UIImagePickerController with allowsEditing=YES.  I am talking about the situation where the user has already chosen a photo, and later (perhaps days or weeks later) decides they want to edit that photo.  In that case, I want to bring up the "Move and Scale" view, just as can be done in Contacts.</p>
  
  <p>Is there a hidden way to use the UIImagePickerController to do this?  Or some other built-in method?  Or would I need to build this view myself?  If I need to build it myself, any pointers?</p>
  
  <p>Thanks!</p>