iOS缩放动画

//缩放动画 CAKeyframeAnimation(关键帧动画)

- (void) shakeToShow:(UIView *)aView
{
    CAKeyframeAnimation* animation = [CAKeyframeAnimation animationWithKeyPath:@"transform"];
    animation.duration = 0.6;// 动画时间
    NSMutableArray *values = [NSMutableArray array];
    // 前两个是控制view的大小的；
    [values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0, 1.0, 1.0)]];
    [values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.8, 0.8, 1.0)]];
    [values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0, 1.0, 1.0)]];
    animation.values = values;
    [aView.layer addAnimation:animation forKey:nil];
}

//UIView动画方式

- (void)scaleAnimation {
    [UIView animateWithDuration:0.1 animations:^{
        self.transform = CGAffineTransformMakeScale(1.5, 1.5);
    } completion:^(BOOL finished) {
        [UIView animateWithDuration:0.1 animations:^{
            self.transform = CGAffineTransformMakeScale(0.9, 0.9);
        } completion:^(BOOL finished) {
            [UIView animateWithDuration:0.12 animations:^{
                self.transform = CGAffineTransformMakeScale(1.1, 1.1);
            } completion:^(BOOL finished) {
                [UIView animateWithDuration:0.12 animations:^{
                    self.transform = CGAffineTransformMakeScale(1.0, 1.0);
                }];
            }];
        }];
    }];
}