1 #import "NJViewController.h"
2
3 #define angle2Radian(angle) ((angle) / 180.0 * M_PI)
4
5 @interface NJViewController ()
6
7 @property (weak, nonatomic) IBOutlet UIImageView *iconView;
8 @end
9
10 @implementation NJViewController
11
12 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
13 {
14 // 1.创建核心动画
15 CAKeyframeAnimation *keyAnima = [CAKeyframeAnimation animation];
16 keyAnima.keyPath = @"transform.rotation";
17 // 度数 / 180 * M_PI
18 keyAnima.values = @[@(-angle2Radian(4)), @(angle2Radian(4)), @(-angle2Radian(4))];
19
20 keyAnima.removedOnCompletion = NO;
21 keyAnima.fillMode = kCAFillModeForwards;
22 keyAnima.duration = 0.1;
23
24 // 设置动画重复的次数
25 keyAnima.repeatCount = MAXFLOAT;
26
27 // 2.添加核心动画
28 [self.iconView.layer addAnimation:keyAnima forKey:nil];
29 }
30
31 @end
