CoreAnimation (CALayer 动画)

CoreAnimation基本介绍：

• CoreAnimation动画位于iOS框架的Media层
• CoreAnimation动画实现需要添加QuartzCore.Framework
• CoreAnimation基本上是LayerAnimation

CoreAnimation分类：

CoreAnimation作用：

CoreAnimation

CALayer基本介绍

CALayer的常用属性

CABasicAnimation

CAKeyframeAnimation

CAAnimationGroup

CASpringAnimation

XIB分别设置几个button然后关联方法，代码展示：

 1 @interface ViewController ()
 2 @property (weak, nonatomic) IBOutlet UIImageView *imageView;
 3
 4 @end
 5
 6 @implementation ViewController
 7 #pragma mark - CABasicAnimation
 8 - (IBAction)CABasicAnimation:(id)sender {
 9     // 第一步：创建动画对象
10     CABasicAnimation *basicAnimation = [CABasicAnimation animation];
11     // 第二步：告诉layer层需要执行什么样的动画（后边设置的内容为CALayer的相关属性）
12     basicAnimation.keyPath = @"position";  // position 改变位置的
13     // 第三步：告诉layer从哪里来，到哪里去
14     basicAnimation.fromValue = [NSValue valueWithCGPoint:CGPointMake(100, 100)];
15     basicAnimation.toValue = [NSValue valueWithCGPoint:CGPointMake(300, 600)];
16     // 注意点： 如果要实现图片不会到原来点，需要以下两句代码
17     basicAnimation.removedOnCompletion = NO;
18     // 设置保存动画状态的内容
19     basicAnimation.fillMode = kCAFillModeForwards;
20
21     // 第四步：设置动画持续的时长
22     basicAnimation.duration = 6.0f;
23     // 第五步：将要执行的动画添加到calayer上
24     [self.imageView.layer addAnimation:basicAnimation forKey:@"basic"];
25     // *************翻转效果
26     CABasicAnimation *basic = [CABasicAnimation animation];
27     basic.keyPath = @"transform";
28     // 设置翻转的地方
29     basic.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeRotation(M_PI_2, 0, 0, 1)];
30     basic.duration = 0.2f;
31     [self.imageView.layer addAnimation:basic forKey:@"aaaa"];
32     // 根据key去移除动画
33     //    [self.imageView.layer removeAnimationForKey:@"basic"];
34 }
35
36 #pragma mark - CAKeyframeAnimation
37 - (IBAction)CAKeyAnimation:(id)sender {
38     // 第一步：创建对象
39     CAKeyframeAnimation *keyAnimation = [CAKeyframeAnimation animation];
40     // 第二步：设置动画轨迹
41     keyAnimation.keyPath = @"transform.rotation";
42     // 第三步：设置翻转的角度 (弧度计算公式：度数/180*M_PI)
43     keyAnimation.values = @[@(-300 / 180.0 * M_PI), @(300 / 180.0 * M_PI), @(-180 / 180.0 * M_PI)];
44     // 第四步：设置时长
45     keyAnimation.duration = 15.0f;
46     // 第五步：添加动画到layer层
47     [self.view.layer addAnimation:keyAnimation forKey:@"bbbb"];
48 }
49
50 #pragma mark - CAAnimationGroup
51 - (IBAction)CAAnimationGroup:(id)sender {
52     // 平移动画
53     CABasicAnimation *basic1 = [CABasicAnimation animation];
54     basic1.keyPath = @"transform.translation.y";    // 按照y轴平移
55     basic1.toValue = @(400);
56     // 缩小动画
57     CABasicAnimation *basic2 = [CABasicAnimation animation];
58     basic2.keyPath = @"transform.scale";  // 缩小
59     basic2.toValue = @(0.3);
60     // 旋转动画
61     CABasicAnimation *basic3 = [CABasicAnimation animation];
62     basic3.keyPath = @"transform.rotation";   // 旋转
63     basic3.toValue = @(M_PI);
64
65     // 需要创建管理各个动画的动画组
66     CAAnimationGroup *group = [CAAnimationGroup animation];
67     group.animations = @[basic1,basic2,basic3];
68     // group 会自动分配时间
69     group.duration = 5.0f;
70
71     [self.imageView.layer addAnimation:group forKey:@"ccccc"];
72 }
73
74 #pragma mark - CASpring
75 - (IBAction)CASpring:(id)sender {
76     // 设置对象
77     CASpringAnimation *spring = [CASpringAnimation animation];
78     spring.keyPath = @"transform.scale";
79     spring.fromValue = @1;
80     spring.toValue = @0.2;
81     spring.duration = 3.0f;
82
83     [self.imageView.layer addAnimation:spring forKey:@"ddddd"];
84 }
85
86 @end

总结：