Question

how to animate animate UIView or UILable like swing

CGPoint newLeftCenter = CGPointMake( 00.0f + label.frame.size.width / 2.0f, label.center.y);
[UIView beginAnimations:nil context:nil]; 
[UIView setAnimationDuration:1.0f];
label.center = newLeftCenter;
[UIView commitAnimations];  

This will animate from left to right!

i need to animate from right to left too!

so when my action trigger it UIVIew or label need to move from left to right and right to left.

@thanks in advance

Answer 1

If you mean that you want to add two sequential animations you could do the following by using setAnimationDidStopSelector

- (void) animationDidStop:(NSString *)animationID 
                 finished:(NSNumber *)finished 
                  context:(void *)context
{
    CGPoint newRightCenter = CGPointMake( 00.0f + label.frame.size.width * 2, label.center.y);
    [UIView beginAnimations:nil context:nil]; 
    [UIView setAnimationDuration:1.0f];
    label.center = newRightCenter;
    [UIView commitAnimations];  
}

- (void) doAnimation
{
    CGPoint newLeftCenter = CGPointMake( 00.0f + label.frame.size.width / 2.0f, label.center.y);

    [UIView beginAnimations:nil context:nil]; 
    [UIView setAnimationDuration:1.0f];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDidStopSelector:@selector(animationDidStop:finished:context:)];

    label.center = newLeftCenter;
    [UIView commitAnimations];  
}