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What is the default value of (NSTimeInterval)duration for UIModalTransitionStyleFlipHorizontal, which is related to -[UIViewController presentModalViewController:animated:]?

ma11hew28
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  • [NSTimeInterval](http://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Miscellaneous/Foundation_DataTypes/Reference/reference.html) is a double (typedef) which specifies the number of seconds the animation should last. Other than that I'm not sure what you're asking. – titaniumdecoy Jun 21 '11 at 04:07

1 Answers1

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If you are asking what the default value of the duration is on an animation when you do not explicitly set it, the answer is provided in the framework headers:

 * If the `duration' property of the animation is zero or negative it
 * is given the default duration, either the value of the
 * `animationDuration' transaction property or .25 seconds otherwise.

So, since you can't set the value on the method call, it should take a quarter second to execute the animation.

Chip Coons
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  • Thanks. I actually think, judging by eye, that it's more like `0.75` for `UIModalTransitionStyleFlipHorizontal`. – ma11hew28 Jun 22 '11 at 01:27
  • I agree. I was surprised to find this in the header. I'm wondering if it is chaining 3 animations together to get the final effect. – Chip Coons Jun 22 '11 at 01:34