我有一个CircleView : UIView类，当你触摸它时（通过pop函数）动画（收缩和增长）。当你触摸它时，我还希望一个描边的圆圈出现并长出来（就像一个基本的水波纹）。（我说的效果在这里用 CSS展示）
我该怎么做呢？
更多信息：
- 理想情况下，两个动画都可以从单个
CircleView类中控制 CircleView继承关闭UIView
更新
根据答案，我通过 a 添加了一个新对象subLayer。这显示正常，但在pop. 谁能帮我理解为什么？
这是我当前的代码（无论如何相关的位）
- (void)layoutSubviews
{
[self setLayerProperties];
}
- (void)setLayerProperties {
//The view’s Core Animation layer used for rendering.
CAShapeLayer *layer = (CAShapeLayer *)self.layer;
UIBezierPath *bezierPath = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)
byRoundingCorners:UIRectCornerAllCorners
cornerRadii:self.frame.size];
layer.path = bezierPath.CGPath;
layer.fillColor = _Color.CGColor;
rippleLayer = [[CALayer alloc] init];
layer.path = bezierPath.CGPath;
layer.strokeColor = [UIColor blueColor].CGColor;
[layer addSublayer:rippleLayer];
}
// Does the animated "pop"
- (void)pop{
CABasicAnimation *animation = [self animationWithKeyPath:@"transform.scale"];
[animation setFromValue:[NSNumber numberWithFloat:1.0f]];
[animation setToValue:[NSNumber numberWithFloat:0.8f]];
[animation setRemovedOnCompletion:YES];
[animation setDuration:0.15];
[animation setAutoreverses:YES];
[self.layer addAnimation:animation forKey:animation.keyPath];
rippleLayer.anchorPoint = CGPointMake(1, 1);
CABasicAnimation *scale = [CABasicAnimation animationWithKeyPath:@"transform.scale"];
[scale setFromValue:[NSNumber numberWithFloat:1.0f]];
[scale setToValue:[NSNumber numberWithFloat:2.0f]];
[scale setRepeatCount:1];
[scale setDuration:1.0f];
//r[scale setRemovedOnCompletion:YES];
[scale setFillMode:kCAFillModeForwards];
[rippleLayer addAnimation:scale forKey:scale.keyPath];
}