title: How to reset the image in UIImageView without loading the whole view?
body: <p>I have a xib which has 1 UIImageView and 1 Toolbar. 
  Toolbar has two buttons save and reset.<br>
  In the simulator i can make some drawing on the image in the UIImageView. 
    Now i want that if i click on the reset button then i would get the original image if i didn't save the changes on the image. 
   I don't want to load the entire view again. 
   Only I need to replace my edited image with original image? 
   Can you please guide me that how can i do this stuff?   </p>