title: How to get the name of the backgroundImage from a button?
body: <p>i´ve created different buttons and initalized them with an array with photos as backgroundImage.</p>
  
  <pre><code>UIButton* myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
  [myButton setBackgroundImage:[UIImage imageNamed: (NSString*) obj ] forState:UIControlStateNormal];
  [myButton addTarget:nil action:@selector(buttonDown: ) forControlEvents:UIControlEventTouchUpInside];
  </code></pre>
  
  <p>Here´s my buttonDown-method:</p>
  
  <pre><code>-(void) buttonDown:(UIButton*) sender {
  NSLog(@"pressed: %@",   sender.currentBackgroundImage  );}
  </code></pre>
  
  <p>That traced me that: "pressed:  &lt; UIImage: 0x6625c40 >"  </p>
  
  <p>Now i want to know how can i get that image-name of any clicked button?
  Would be nice to know.Thanks for your time.</p>