IOS动画

- (IBAction)OpenAnimation:(id)sender {
    [super viewDidAppear:YES];
    [self.image setFrame:CGRectMake(0, 0, 100, 100)];
    [UIView beginAnimations:@"xcodeImageViewAnimation" context:self.image];
    [UIView setAnimationDuration:2];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDidStopSelector:@selector(imageViewDidStop:finished:context:)];
    [self.image setFrame:CGRectMake(100, 100, 100, 100)];
    [UIView commitAnimations];
}
- (void)imageViewDidStop:(NSString *) paramAnimationID finished:(NSNumber *)paramFinished context:(void *)paramContext
{ NSLog(@"Animation finished.");
    NSLog(@"Animation ID = %@", paramAnimationID);
    UIImageView *contextImageView = (UIImageView *)paramContext;
    NSLog(@"Image View = %@", contextImageView);
}

    [super viewDidAppear:YES];
    /* Place the image view at the center
     of the view of this view controller */
    self.image.center = self.view.center;
    /* Make sure no translation is applied to this image view */ self.image.transform = CGAffineTransformIdentity;
    /* Begin the animation */
    [UIView beginAnimations:nil context:NULL];
    /* Make the animation 5 seconds long */ [UIView setAnimationDuration:5.0f];
    /* Make the image view twice as large in width and height */ self.image.transform = CGAffineTransformMakeScale(2.0f, 2.0f);
    /* Commit the animation */
    [UIView commitAnimations];

  [super viewDidAppear:YES];
    self.image.center = self.view.center;
    /* Begin the animation */
    [UIView beginAnimations:@"clockwiseAnimation" context:NULL];
    /* Make the animation 5 seconds long */
    [UIView setAnimationDuration:5.0f];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDidStopSelector:@selector(imageViewDidStop:finished:context:)];
    /* Rotate the image view 90 degrees */
    self.image.transform =CGAffineTransformMakeRotation((90.0f * M_PI) / 180.0f);
    /* Commit the animation */
    [UIView commitAnimations];

  [UIView animateWithDuration:1.0
                     animations:^{
                         //self.label1.alpha = 0.0;
                         self.label2.alpha = 1.0;
                         self.label1.center = CGPointMake(100.0, 43);
                     }
                     completion:^(BOOL finished){}];