iPad: Move UIView with animation, then move it back

Question

I have the following code in a UIView subclass that will move it off the screen with an animation:

float currentX = xposition; //variables that store where the U         


        

Answer 1

UIView transform isn't additive; I suggest that to move it back you instead do:

self.transform = CGAffineTransformIdentity;

The docs say (about updating the frame):

"Warning: If this property is not the identity transform, the value of the frame property is undefined and therefore should be ignored."

Answer 2

Assigning to a transform will cause the old one to disappear. To return to the original position, assign the identity transform to it.

self.transform = CGAffineTransformIdentity;

(Or better, just change the .frame instead of changing the .transform.)