核心动画-04-CALayer隐式动画

 1 //
 2 //  ViewController.m
 3 //  04 CALayer的隐式动画
 4 //
 5 //  Created by ZhuJiaCong on 16/4/18.
 6 //  Copyright © 2016年 wxhl. All rights reserved.
 7 //
 8 
 9 #import "ViewController.h"
10 
11 @interface ViewController ()
12 {
13     CALayer *_layer;
14 }
15 @end
16 
17 @implementation ViewController
18 
19 - (void)viewDidLoad {
20     [super viewDidLoad];
21     
22     //只有Layer不是View的根Layer时，才能使用隐式动画
23     // self.view.layer
24     
25     //创建一个Layer
26     _layer = [CALayer layer];
27     _layer.backgroundColor = [UIColor redColor].CGColor;
28     _layer.bounds = CGRectMake(0, 0, 100, 100);
29     _layer.position = self.view.center;
30     
31     
32     _layer.borderColor = [UIColor orangeColor].CGColor;
33     _layer.borderWidth = 5;
34     
35     
36     [self.view.layer addSublayer:_layer];
37     
38     
39     
40 }
41 
42 
43 - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
44     
45     //隐式动画
46     //当我们在设置Layer的某些属性时，系统会自动的给Layer添加动画
47     //动画的实现代码是在系统底层，无法对动画的配置进行修改
48 //    _layer.transform = CATransform3DMakeRotation(M_PI, 0, 0, 1);
49     
50     UITouch *touch = [touches anyObject];
51     CGPoint location = [touch locationInView:self.view];
52     _layer.position = location;
53     
54     
55     //查找文档 可以获取所有支持隐式动画的属性
56     //查找关键词 CALayer Animatable Properties
57     _layer.backgroundColor = [UIColor greenColor].CGColor;
58     //不透明度
59     _layer.opacity = 1;
60     _layer.borderColor = [UIColor purpleColor].CGColor;
61     _layer.borderWidth = 20;
62 }
63 
64 - (void)didReceiveMemoryWarning {
65     [super didReceiveMemoryWarning];
66     // Dispose of any resources that can be recreated.
67 }
68 
69 @end