OC代码实现:
#import"ViewController.h"
@interfaceViewController()
@property(weak,nonatomic)IBOutletUIView*contentView;
@end
@implementationViewController
- (void)viewDidLoad {
[superviewDidLoad];
//复制层:复制里面的子层
CAReplicatorLayer*repL = [CAReplicatorLayerlayer];
repL.frame=_contentView.bounds;
//
instanceCount:表示复制层中有多少份子层,拷贝是instanceCount
- 1份
repL.instanceCount=4;
//设置复制子层偏移量,每个子层都会相对上一次偏移
repL.instanceTransform=CATransform3DMakeTranslation(40,0,0);
//延迟每个子层的动画,相对于上一个子层延迟
repL.instanceDelay=0.2;
//设置子层的颜色
repL.instanceColor= [UIColorcolorWithWhite:1alpha:0.2].CGColor;
[_contentView.layeraddSublayer:repL];
//红色的图层
CALayer*layer = [CALayerlayer];
layer.backgroundColor= [UIColorredColor].CGColor;
//layer.frame = CGRectMake(0, 100, 30, 100);
layer.anchorPoint=CGPointMake(0,1);
layer.position=CGPointMake(0,200);
layer.bounds=CGRectMake(0,0,30,100);
//把红色图层添加到复制层中
[repLaddSublayer:layer];
CABasicAnimation*anim = [CABasicAnimationanimation];
anim.keyPath=@"transform.scale.y";
anim.toValue=@0;
anim.duration=0.5;
//设置动画反转
anim.autoreverses=YES;
anim.repeatCount=MAXFLOAT;
[layeraddAnimation:animforKey:nil];
}
