caanimationgroup与CATransaction的区别

动画的组合；

caanimationgroup：同一个layer；

CATransaction：不同layer；

In Core Animation, transactions are a way to group multiple animation-related changes together. Transactions ensure that the desired animation changes are committed to Core Animation at the same time:

CATransaction.begin()

backingLayer1.opacity = 1.0
backingLayer2.position = CGPoint(x: 50.0, y: 50.0)
backingLayer3.backgroundColor = UIColor.red.cgColor

CATransaction.commit()

UIView itself has a handful of functions involved with enabling and disabling animations, such as setAnimationsEnabled(_:) and performWithoutAnimation(_:). However, to ensure that both UIView-style and CALayer-style animations are suppressed, you can always just use CATransaction.

https://www.calayer.com

CABasicAnimation *rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];

rotationAnimation.toValue = [NSNumber numberWithFloat:(2 * M_PI) * 2];

rotationAnimation.duration = 1;

rotationAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];

CABasicAnimation *scaleAnimation = [CABasicAnimation animationWithKeyPath:@"transform.scale"];

scaleAnimation.toValue = [NSNumber numberWithFloat:0.0];

scaleAnimation.duration = 1;

scaleAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];

CAAnimationGroup *animationGroup = [CAAnimationGroup animation];

animationGroup.duration = 1;

animationGroup.autoreverses = YES;

animationGroup.repeatCount = 1;

animationGroup.animations =[NSArray arrayWithObjects:rotationAnimation, scaleAnimation, nil];

[view.layer addAnimation:animationGroup forKey:@"animationGroup"];

CATransaction.begin()

CATransaction.setAnimationDuration(1.0)

CATransaction.setAnimationTimingFunction(CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseOut))

// Layer animation

let myAnimation = CABasicAnimation(keyPath: "frame");

myAnimation.toValue = NSValue(cgRect: myNewFrame)

myAnimation.fromValue = NSValue(cgRect: myLayer.frame)

myLayer.frame = myNewFrame

myLayer.add(myAnimation, forKey: "someKeyForMyAnimation")

// Outer animation

let outerAnimation = CABasicAnimation(keyPath: "frame")

outerAnimation.toValue = NSValue(cgRect: myNewOuterFrame)

outerAnimation.fromValue = NSValue(cgRect: outerView.frame)

outerView.layer.frame = myNewOuterFrame

outerView.layer.add(outerAnimation, forKey: "someKeyForMyOuterAnimation")

CATransaction.commit()

//保证 insert row 不闪屏

UIView.setAnimationsEnabled(false)

CATransaction.begin()

CATransaction.setDisableActions(true)

self.beginUpdates()

self.insertRows(at: rows, with: .none)

self.endUpdates()

self.scrollToRow(at: rows[0], at: .bottom, animated: false)

CATransaction.commit()

UIView.setAnimationsEnabled(true)