#import "HMViewController.h"

@interface HMViewController ()

@property (nonatomic, weak) CALayer *layer;

@end

@implementation HMViewController

- (void)viewDidLoad

{

    [super viewDidLoad];

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

    CALayer *layer = [CALayer layer];

    layer.position = CGPointMake(, );

    layer.bounds = CGRectMake(, , , );

    layer.backgroundColor = [UIColor redColor].CGColor;

    layer.contents = (id)[UIImage imageNamed:@"心"].CGImage;

    [self.view.layer addSublayer:layer];

    _layer = layer;

}

//旋转的动画

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

{

    // 创建动画对象

    CABasicAnimation *anim = [CABasicAnimation animation];

    // 设置动画的属性

    anim.keyPath = @"transform.scale";

    // 设置属性改变的值

    anim.toValue = @0.5;

    // 设置动画时长

    anim.duration = 0.25;

    // 取消反弹

    // 动画执行完毕之后不要把动画移除

    anim.removedOnCompletion = NO;

    // 保持最新的位置

    anim.fillMode = kCAFillModeForwards;

    // 重复动画的次数

    anim.repeatCount = MAXFLOAT;

    // 给图层添加了动画

    [_layer addAnimation:anim forKey:nil];

}

//移动的动画

- (void)position

{

    // 创建动画对象

    CABasicAnimation *anim = [CABasicAnimation animation];

    // 设置动画的属性

    anim.keyPath = @"position";

    // 设置属性改变的值

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

    // 设置动画时长

    anim.duration = ;

    // 取消反弹

    // 动画执行完毕之后不要把动画移除

    anim.removedOnCompletion = NO;

    // 保持最新的位置

    anim.fillMode = kCAFillModeForwards;

    // 给图层添加了动画

    [_layer addAnimation:anim forKey:nil];

}

@end