ios – 使用标签栏关闭视图控制器后,动画不停止

概述问题 我有两个视图控制器,都包含在相应的UINavigationController和一个UITabBarController内.在其中一个视图控制器中,我正在创建一个气泡效果,我在屏幕上画出气泡并对其位置进行动画处理.当我使用标签栏移动到另一个视图控制器时,会出现此问题,这会导致CPU飙升并保持在100％,气泡继续动画. 码 气泡的代码封装在UIView子类中. override func dr 问题
我有两个视图控制器,都包含在相应的UINavigationController和一个UITabbarController内.在其中一个视图控制器中,我正在创建一个气泡效果,我在屏幕上画出气泡并对其位置进行动画处理.当我使用标签栏移动到另一个视图控制器时,会出现此问题,这会导致cpu飙升并保持在100％,气泡继续动画.

码
气泡的代码封装在UIVIEw子类中.

overrIDe func draw(_ rect: CGRect) {    // spawn shapes    for _ in 1 ... 10 { // spawn 75 shapes initially      spawn()    }  }

drawRect方法重复地调用spawn函数以使用气泡填充视图.

fileprivate func spawn() {    let shape = CAShapeLayer()    shape.opacity = 0.0    // create an inital path at the starting position    shape.path = UIBezIErPath(arcCenter: CGPoint.zero,radius: 1,startAngle: 0,endAngle: 360 * (CGfloat.pi / 180),clockwise: true).cgPath    shape.position = CGPoint.zero    layer.addSublayer(shape)    // add animation group    CATransaction.begin()    let radiusAnimation = CABasicAnimation(keyPath: "path")    radiusAnimation.fromValue = shape.path    radiusAnimation.tovalue = UIBezIErPath(arcCenter: center,radius: 100,clockwise: true).cgPath    CATransaction.setCompletionBlock { [uNowned self] in      // remove the shape      shape.removeFromSuperlayer()      shape.removeAllAnimations()      // spawn a new shape      self.spawn()    }    let movementAnimation = CABasicAnimation(keyPath: "position")    movementAnimation.fromValue = NSValue(cgPoint: CGPoint.zero)    movementAnimation.tovalue = NSValue(cgPoint: CGPoint(x: 100,y: 100))    let animationGroup = CAAnimationGroup()    animationGroup.animations = [radiusAnimation,movementAnimation]    animationGroup.fillMode = kCAFillModeForwards    animationGroup.isRemovedOnCompletion = false    animationGroup.duration = 2.0    shape.add(animationGroup,forKey: "bubble_spawn")    CATransaction.commit()  }

在CATransaction完成处理程序中,我从超级视图中删除形状并创建一个新的形状.对self.spawn()的函数调用似乎是问题

在vIEwDIDdisappear的包含视图控制器我呼叫以下：

func removeAllAnimationsFromLayer() {    layer.sublayers?.forEach({ (layer) in      layer.removeAllAnimations()      layer.removeFromSuperlayer()    })    CATransaction.setCompletionBlock(nil)  }

尝试从答案
我试图将removeAllAnimations函数添加到UITabbarControllerDelegate

extension BaseVIEwController: UITabbarControllerDelegate {  func tabbarController(_ tabbarController: UITabbarController,dIDSelect vIEwController: UIVIEwController) {    bubblesVIEw.removeAllAnimationsFromLayer()  }}

解决方法 我想你的问题是,你只使用一个线程的所有东西.请随时随地发送影响您的GUI的所有内容,并将其显示给其他线程的新的spawn实例.看看怎么回事这样的事情

fileprivate func spawn() {    let shape = CAShapeLayer()    shape.opacity = 0.0    // create an inital path at the starting position    shape.path = UIBezIErPath(arcCenter: CGPoint.zero,clockwise: true).cgPath    shape.position = CGPoint.zero    // create an inital path at the starting position    shape.path = UIBezIErPath(arcCenter: startingposition,radius: starTradius,startAngle: BubbleConstants.StartingAngle,endAngle: BubbleConstants.EndAngle,clockwise: true).cgPath    shape.position = startingposition    // set the fill color    shape.fillcolor = UIcolor.white.cgcolor    layer.addSublayer(shape)    shape.opacity = float(opacity)    dispatchQueue.main.async {        self.layer.addSublayer(shape)        CATransaction.begin()    }    let radiusAnimation = CABasicAnimation(keyPath: "path")    radiusAnimation.fromValue = shape.path    radiusAnimation.tovalue = UIBezIErPath(arcCenter: center,radius: endRadius,clockwise: true).cgPath    dispatchQueue.main.async { [uNowned self] in        CATransaction.setCompletionBlock { [uNowned self] in            // remove the shape            dispatchQueue.main.async {                shape.removeFromSuperlayer()                shape.removeAllAnimations()            }            dispatchQueue.global(qos: .background).async {                // spawn a new shape                self.spawn()            }        }    }    let movementAnimation = CABasicAnimation(keyPath: "position")    movementAnimation.fromValue = NSValue(cgPoint: startingposition)    movementAnimation.tovalue = NSValue(cgPoint: destination)    let animationGroup = CustomAnimationGroup()    animationGroup.animations = [radiusAnimation,movementAnimation]    animationGroup.fillMode = kCAFillModeForwards    animationGroup.isRemovedOnCompletion = false    animationGroup.duration = duration    shape.add(animationGroup,forKey: "bubble_spawn")    dispatchQueue.main.async {        CATransaction.commit()    }}

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