#import "ViewController.h" #define angle2Rad(angle) ((angle) / 180.0 * M_PI) @interface ViewController () @property (weak, nonatomic) IBOutlet UIImageView *imageV; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. } -(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event { /** 1:UIBezierPath:是绘制路径的类,moveToPoint设置起点,addLineToPoint,从起点绘制一条路径,在执行addLineToPoint,则从终点作为起点,在绘制一条路径,要转为CGPath * */ //1.创建动画对象 CAKeyframeAnimation *anim = [CAKeyframeAnimation animation]; anim.duration = 2; UIBezierPath *path = [UIBezierPath bezierPath]; [path moveToPoint:CGPointMake(50, 50)]; [path addLineToPoint:CGPointMake(300, 50)]; [path addLineToPoint:CGPointMake(300, 400)]; anim.keyPath = @"position"; anim.path = path.CGPath; [self.imageV.layer addAnimation:anim forKey:nil]; } //图标抖动 - (void)icon { //1.创建动画对象 CAKeyframeAnimation *anim = [CAKeyframeAnimation animation]; //2.设置属性值 /**1:keyPath为layear下的属性的keypath路径 2:values是一个数组,在values数组里定义的对象都会产生动画效果,让图标先向左移动-3弧度,再动画回来移动到3弧度,在动画移动到-3,无限重复 2:也可以设置动画的翻转效果:anim.values = @[@(angle2Rad(-3)),@(angle2Rad(3))],anim.autoreverses,这样执行完values里的动画到3弧度后,还会动画回来继续重复,否则不会产生动画 3:再把动画添加到layear层上,核心动画都是作用砸layear层上 * */ anim.keyPath = @"transform.rotation"; anim.values = @[@(angle2Rad(-3)),@(angle2Rad(3)),@(angle2Rad(-3))]; //3.设置动画执行次数 anim.repeatCount = MAXFLOAT; anim.duration = 0.5; //anim.autoreverses = YES; [self.imageV.layer addAnimation:anim forKey:nil]; } @end
1.帧动画介绍:
CAKeyframeAnimation它可以在多个值之间进行动画.
设置多值之间的属性为:
后面是一个数组,就是要设置的多个值.
anim.values = @[];
它还可以根据一个路径做动画.
anim.path = 自己创建的路径.
2.图片抖动思路:
其实就是做一个左右旋转的动画.先让它往左边旋转-5,再往右边旋转5度,再从5度旋转到-5度.
就会有左右摇摆的效果了.
具体实现代码
创建帧动画
CAKeyframeAnimation *anim = [CAKeyframeAnimation animation];
设置动画属性为旋转
anim.keyPath = @"transform.rotation";
设置属性值为多个属性
anim.values = @[@(angle2radio(-5)),@(angle2radio(5)),@(angle2radio(-5))];
设置动画执行次数
anim.repeatCount = MAXFLOAT;
添加动画
[_imageView.layer addAnimation:anim forKey:nil];
3.根据圆形的路径做移动的效果.
创建路径
UIBezierPath *path = [UIBezierPath
bezierPathWithOvalInRect:CGRectMake(50, 50, 100, 100)];
[path addLineToPoint:CGPointMake(200, 500)];
把路径设为动画的属性
anim.path = path.CGPath;
时间: 2024-11-03 17:21:33