Hey all, got a little problem here and can't figure out what I am doing wrong. I am trying to animate a UIView up and down repeatedly. When I start it, it goes down correctly and then back up but then immediately shoots to the "final" position of the animation. Code is as follows:
UIImageView *guide = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"image.png"]];
guide.frame = CGRectMake(250, 80, 30, 30);
[self.view addSubview:guide];
[UIView beginAnimations:nil context:nil];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationDuration:2];
[UIView setAnimationRepeatAutoreverses:YES];
[UIView setAnimationBeginsFromCurrentState:YES];
guide.frame = CGRectMake(250, 300, 30, 30);
[UIView setAnimationRepeatCount:10];
[UIView commitAnimations];
Thanks in advance!
This is an old question, but in case anyone is looking at this you can just use a fractional repeat count to end on the desired state. If you're animating from A to B and using auto reverse, each repeat will look like this A -> B -> A. Since you want to end on B on the last animation and not A, just do this to make the last repeat only go halfway (to B):
[UIView setAnimationRepeatCount:10.5];
That's it!
It's a 'feature', not a bug. It's really annoying, but it looks like unless Apple says otherwise, this is how UIView Animations are expected to work.
See this answer: setAnimationRepeatAutoreverses not behaved as I expected
You may set setAnimationDidStopSelector to a custom function and in the custom function you can set up more animations (even recursively ). See my answer to another question here .
Usually I will define an animation structure (AnimationPath in the example)
to coordinate the whole animation (say, by a counter).
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.