Question

I am new to the objective c coding in iPhone. i am using below code to animate the image for 40 seconds

[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:40.0];
object.transform = CGAffineTransformMakeRotation(1.57);
[UIView commitAnimations];

i need to speed up the animation after 10 sec. i.e the animation should work with above values for 10sec, after that the animation speed should increase.

Answer 1

You will not be able to do it with the

[UIView beginAnimations:nil context:nil];

construct. Have a look at the core animation framework:

http://developer.apple.com/iphone/library/documentation/Cocoa/Conceptual/CoreAnimation_guide/Articles/AnimatingLayers.html#//apple_ref/doc/uid/TP40006085-SW1

What you want to do is a serie of Keyed Animations if I remember correctly