iphone - 如何为图像制作动画，就像它即将到来一样。例如 : moving in the sky. iPhone

Question

如何对图像进行动画处理，使其看起来像是朝用户走来的。例如:在天空中移动

Answer 1

请查看此解决方案

-(IBAction)showSignInView:(id)sender{
    signInView.hidden = NO;
    [self initialDelayEnded:Your View ];
}
-(void)initialDelayEnded:(UIView *)view {
    view.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.3, 0.3);
    view.alpha = 1.0;
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:kTransitionDuration/1.5];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDidStopSelector:@selector(bounce1AnimationStopped:)];
    view.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.1, 1.1);
    [UIView commitAnimations];
}

- (void)bounce1AnimationStopped:(UIView *)view {
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:kTransitionDuration/2];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDidStopSelector:@selector(bounce2AnimationStopped:)];
    view.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.0, 1.0);
    [UIView commitAnimations];
}

- (void)bounce2AnimationStopped:(UIView *)view {
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:kTransitionDuration/2];
    view.transform = CGAffineTransformIdentity;
    [UIView commitAnimations];
}