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View Full Version : UIView commitAnimations - does not animate on second run




TenaciousG
Oct 20, 2009, 01:44 AM
Hi!
Im running this code to scale and move an image in animation. It works perfectly the first run, but the next time I run this code the image does not animate.
Ive put NSLog statements before and after the transforms to see if the image is affected. See the results below the code

-(void)animateShowImage:(UIButton *)button
{
//set the starting animate position
CGRect frameRect = imageView.frame;

frameRect.size.width = button.frame.size.width;
frameRect.size.height = button.frame.size.height;
frameRect.origin = button.frame.origin;
imageView.frame = frameRect;


NSLog(@"imageview width : %f", imageView.frame.size.width);
NSLog(@"imageview height : %f", imageView.frame.size.height);
NSLog(@"imageview x : %f", imageView.frame.origin.x);
NSLog(@"imageview y : %f", imageView.frame.origin.y);

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1.2];

CGAffineTransform move = CGAffineTransformMakeTranslation(30, 20);
CGAffineTransform scale = CGAffineTransformMakeScale(3,3);

CGAffineTransform finalTransform = CGAffineTransformConcat(move, scale);
imageView.transform = finalTransform;

[UIView commitAnimations];

NSLog(@"imageview width : %f", imageView.frame.size.width);
NSLog(@"imageview height : %f", imageView.frame.size.height);
NSLog(@"imageview x : %f", imageView.frame.origin.x);
NSLog(@"imageview y : %f", imageView.frame.origin.y);
}

NSLog first run:
2009-10-19 19:13:41.339 MyProject[15847:207] imageview width : 48.000000
2009-10-19 19:13:41.341 MyProject[15847:207] imageview height : 45.000000
2009-10-19 19:13:41.341 MyProject[15847:207] imageview x : 8.000000
2009-10-19 19:13:41.342 MyProject[15847:207] imageview y : 57.000000
(gdb) continue
Current language: auto; currently objective-c
2009-10-19 19:13:44.649 MyProject[15847:207] imageview width : 144.000000
2009-10-19 19:13:44.650 MyProject[15847:207] imageview height : 135.000000
2009-10-19 19:13:44.650 MyProject[15847:207] imageview x : 50.000000
2009-10-19 19:13:45.080 MyProject[15847:207] imageview y : 72.000000
NSLog second run:
2009-10-19 19:13:51.487 MyProject[15847:207] imageview width : 48.000000
2009-10-19 19:13:51.488 MyProject[15847:207] imageview height : 45.000000
2009-10-19 19:13:51.489 MyProject[15847:207] imageview x : 8.000000
2009-10-19 19:13:51.489 MyProject[15847:207] imageview y : 57.000000
(gdb) continue
2009-10-19 19:13:54.424 MyProject[15847:207] imageview width : 48.000000
2009-10-19 19:13:54.425 MyProject[15847:207] imageview height : 45.000000
2009-10-19 19:13:54.425 MyProject[15847:207] imageview x : 8.000000
2009-10-19 19:13:57.433 MyProject[15847:207] imageview y : 57.000000

I cant figure out what Im doing wrong. Any help is apprechiated!