#import "HMViewController.h"

@interface HMViewController ()

@property (weak, nonatomic) IBOutlet UIView *redView;

@end

@implementation HMViewController

- (void)viewDidLoad

{

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

    CABasicAnimation *rotation = [CABasicAnimation animation];

    rotation.keyPath = @"transform.rotation";

    rotation.toValue = @M_PI_2;

    CABasicAnimation *position = [CABasicAnimation animation];

    position.keyPath = @"position";

    position.toValue = [NSValue valueWithCGPoint:CGPointMake(, )];

    CABasicAnimation *scale = [CABasicAnimation animation];

    scale.keyPath = @"transform.scale";

    scale.toValue = @0.5;

    CAAnimationGroup *group = [CAAnimationGroup animation];

    group.animations = @[rotation,position,scale];

    group.duration = ;

    // 取消反弹

    group.removedOnCompletion = NO;

    group.fillMode = kCAFillModeForwards;

    [_redView.layer addAnimation:group forKey:nil];

}

@end