ios4 - How to control animation speed? -

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I am taking an image and then expanding the image. The problem is that what is my image growing rapidly is there any way to run 2 animation and control speed? Here's the code: 

  - (IBAction) pushmove {[UIView startAnimations: zero reference: NULL]; [UIView Set Animation Duration: 2.5]; Square.transform = CGFene Transmeter Transmission (-200, -300); [UIView Set Animation Duration: 1.5]; Square.transform = CGF TransFormsMacecale (8, 8); [UIView commitAnimations];    
 
 
 Yes!  
 It is possible and quite easy. The main thing is that the  CA animation  implies the  CAMediaTiming  protocol. Therefore you can set the speed on either  CAAnimation  or  CAAnimationGroup :  
  myAnimationGroup.speed = 2;   
 So if the term is  4 , your group will be executed in  2  seconds.  
 Some of Apple's videos are very helpful on this topic, including  CAMediaTiming  in the WWDC 2010 session 424 and it uses checkout 46: 30 seconds in the video.  
 Here's the link:

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