标签：col top 执行 super 核心 nbsp sources def oval
一.简单介绍
是CAPropertyAnimation的子类，跟CABasicAnimation的区别是：CABasicAnimation只能从一个数值(fromValue)变到另一个数值(toValue)，而CAKeyframeAnimation会使用一个NSArray保存这些数值。
属性解析：
values：就是上述的NSArray对象。里面的元素称为”关键帧”(keyframe)。动画对象会在指定的时间(duration)内，依次显示values数组中的每一个关键帧。
path：可以设置一个CGPathRef\CGMutablePathRef，让层跟路径移动。path只对CALayer的anchorPoint和position起作用。如果你设置了path，那么values将被忽略
keyTimes：可以为对应的关键帧指定对应的时间点，其取值范围为0到1.0，keyTimes中的每一个时间值都对应values中的每一帧。当keyTimes没有设置的时候，各个关键帧的时间是平分的。
说明:
CABasicAnimation可看做最多只有2个关键帧的CAKeyframeAnimation。
二.代码示例
第一种方式
@interface ViewController () @property(nonatomic,strong) UIView *customView; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; _customView = [[UIView alloc] initWithFrame:CGRectMake(0, 100, 100, 100)]; _customView.backgroundColor = [UIColor yellowColor]; [self.view addSubview:_customView]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{ //创建核心动画 CAKeyframeAnimation *keyAnimation = [CAKeyframeAnimation animation]; //平移 keyAnimation.keyPath = @"position"; //告诉系统要执行什么动画 NSValue *value1 = [NSValue valueWithCGPoint:CGPointMake(100, 100)]; NSValue *value2 = [NSValue valueWithCGPoint:CGPointMake(200, 100)]; NSValue *value3 = [NSValue valueWithCGPoint:CGPointMake(200, 200)]; NSValue *value4 = [NSValue valueWithCGPoint:CGPointMake(100, 200)]; NSValue *value5 = [NSValue valueWithCGPoint:CGPointMake(100, 100)]; keyAnimation.values = @[value1,value2,value3,value4,value5]; //设置动画完毕后，不删除动画 keyAnimation.removedOnCompletion = NO; //设置保持动画的最新状态 keyAnimation.fillMode = kCAFillModeForwards; //设置动画执行的时间 keyAnimation.duration = 4.0; //设置动画的节奏 keyAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]; //设置代理,开始-结束 keyAnimation.delegate = self; //添加核心动画 [_customView.layer addAnimation:keyAnimation forKey:nil]; } #pragma mark Core Animation Delegate - (void)animationDidStart:(CAAnimation *)anim{ NSLog(@"开始动画"); } - (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag{ NSLog(@"结束动画"); } @end
第二种方式(使用path)让layer在指定的路径上移动
@interface ViewController () @property(nonatomic,strong) UIView *customView; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; _customView = [[UIView alloc] initWithFrame:CGRectMake(0, 100, 100, 100)]; _customView.backgroundColor = [UIColor yellowColor]; [self.view addSubview:_customView]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{ //创建核心动画 CAKeyframeAnimation *keyAnimation = [CAKeyframeAnimation animation]; keyAnimation.keyPath = @"position"; //告诉系统要执行什么动画 //创建一条路径 CGMutablePathRef path = CGPathCreateMutable(); CGPathAddEllipseInRect(path, NULL, CGRectMake(150, 100, 100, 100)); keyAnimation.path = path; //有create就一定要有release CGPathRelease(path); //设置动画执行完毕后，不删除动画 keyAnimation.removedOnCompletion = NO; //设置保存动画的最新状态 keyAnimation.fillMode = kCAFillModeForwards; //设置动画执行的时间 keyAnimation.duration = 5.0; //设置动画的节奏 keyAnimation.timingFunction=[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]; //设置代理,开始-结束 keyAnimation.delegate = self; //添加核心动画 [_customView.layer addAnimation:keyAnimation forKey:nil]; } #pragma mark Core Animation Delegate - (void)animationDidStart:(CAAnimation *)anim{ NSLog(@"开始动画"); } - (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag{ NSLog(@"结束动画"); } @end
说明:可以通过path属性，让layer在指定的路径上运动。
停止动画:
//添加核心动画 [self.customView.layer addAnimation:keyAnima forKey:@"wendingding"]; //停止self.customView.layer上名称标示为wendingding的动画 [self.customView.layer removeAnimationForKey:@"wendingding"];
三.图标抖动
#import "ViewController.h" #define angle2Radian(angle) ((angle)/180.0*M_PI) @interface ViewController () @property(nonatomic,strong) UIImageView *iconView; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; _iconView = [[UIImageView alloc] initWithFrame:CGRectMake(160, 150, 100, 100)]; _iconView.image = [UIImage imageNamed:@"logo_100.jpg"]; [self.view addSubview:_iconView]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{ //创建核心动画 CAKeyframeAnimation *keyAnimation = [CAKeyframeAnimation animation]; keyAnimation.keyPath = @"transform.rotation"; //设置动画时间 keyAnimation.duration = 0.1; //把度数转换为弧度 度数/180*M_PI keyAnimation.values = @[@(-angle2Radian(4)),@(angle2Radian(4)),@(-angle2Radian(4))]; //设置动画的重复次数(设置为最大值) keyAnimation.repeatCount = MAXFLOAT; keyAnimation.fillMode = kCAFillModeForwards; keyAnimation.removedOnCompletion = NO; //添加动画 [self.iconView.layer addAnimation:keyAnimation forKey:nil]; } @end
标签：col top 执行 super 核心 nbsp sources def oval
原文地址：https://www.cnblogs.com/jiuyi/p/10105120.html
