File opening animation like in iBooks and Photos.a

问题:

When you open a PDF file in iBooks.app, its thumbnail expands to entire screen, then it shows a PDF page. And when you open a photo in Photos.app on iPad, its thumbnail expands to entire screen too. Then you can swipe between pages, zoom it and so on. So, I would like to implement this animation in my application, but I have no idea how to do it.

Can you help me? Thank you very much for your answer.

回答1:

You can use a simple animation:

  // Begin animation
  [UIView beginAnimations:nil context:NULL];
  [UIView setAnimationCurve:UIViewAnimationCurveLinear];
  [UIView setAnimationDuration:0.5];

  // Maximize image size
  MyImage.frame = self.view.frame;

  // Commit animation
  [UIView commitAnimations];