1 #import "NJViewController.h"
2
3 @interface NJViewController ()
4 @property (weak, nonatomic) IBOutlet UIImageView *iconView;
5 - (IBAction)nextBtnClick:(id)sender;
6 - (IBAction)preBtnClick:(id)sender;
7
8 @property (nonatomic, assign) int index;
9 @end
10
11 @implementation NJViewController
12
13 // 下一张
14 - (IBAction)nextBtnClick:(id)sender {
15 self.index++;
16 if (self.index >7) {
17 self.index = 1;
18 }
19
20 NSString *imageName = [NSString stringWithFormat:@"%d.jpg", self.index];
21 UIImage *newImage = [UIImage imageNamed:imageName];
22 self.iconView.image = newImage;
23
24 // 1.创建核心动画
25 CATransition *ca = [CATransition animation];
26 // 1.1动画过渡类型
27 ca.type = @"cube";
28 // 1.2动画过渡方向
29 ca.subtype = kCATransitionFromRight;
30 // 1.3动画起点(在整体动画的百分比)
31 // ca.startProgress = 0.5;
32 ca.endProgress = 0.5;
33
34
35 // 动画时间
36 ca.duration = 1;
37
38 // 2.添加核心动画
39 [self.iconView.layer addAnimation:ca forKey:nil];
40 }
41
42 // 上一张
43 - (IBAction)preBtnClick:(id)sender {
44 self.index--;
45 if (self.index < 1) {
46 self.index = 7;
47 }
48 NSString *imageName = [NSString stringWithFormat:@"%d.jpg", self.index];
49 UIImage *newImage = [UIImage imageNamed:imageName];
50 self.iconView.image = newImage;
51
52 // 1.创建核心动画
53 CATransition *ca = [CATransition animation];
54 // 1.1告诉系统执行什么动画
55 ca.type = @"cube";
56 ca.subtype = kCATransitionFromLeft;
57
58 ca.duration = 1;
59
60 // 2.添加核心动画
61 [self.iconView.layer addAnimation:ca forKey:nil];
62
63 }
64 @end
