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Animating frame width on UIButton with background image

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Animating frame width on UIButton with background image

Subject: Animating frame width on UIButton with background image
From: Bryan Hansen <email@hidden>
Date: Thu, 13 Nov 2008 05:37:29 -0800

Is it possible to animate the width of a UIButton of UIButtonStyleCustom type? I have an animation on frame size which works fine when the UIButton is a UIButtonTypeRoundedRect. But has no visible affect when I am using a UIButtonStyleCustom with background image. I am trying to use a background image that has stretchableImageWithLeftCapWidth, but I have also noticed that a normal UIImage as the background fails to animate as well. My animation code is here:

	[UIView beginAnimations:nil context:@"MyAnimation"];
	[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
	[UIView setAnimationDuration:0.25];
	CGRect tempFrame = myButton.frame;
	tempFrame.size.width = tempFrame.size.width + 100.0f;
	myButton.frame = tempFrame;
	[UIView commitAnimations];

Thanks for the help!
Bryan


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