核心动画-07-组动画-day4

//
//  ViewController.m
//  07 CAAnimationGroup
//
//  Created by ZhuJiaCong on 16/4/19.
//  Copyright © 2016年 wxhl. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()


@property (weak, nonatomic) IBOutlet UIView *animationView;

@end

@implementation ViewController



- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
    
    //旋转动画
    CABasicAnimation *animation1 = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
    animation1.fromValue = @0;
    animation1.toValue = @(M_PI_2);
    
    //设置动画时间
    animation1.duration = 1;
    //重复旋转动画
    animation1.repeatCount = HUGE_VALF;
    
    
//    [_animationView.layer addAnimation:animation1 forKey:nil];
    
    //在使用关键帧动画来改变背景颜色时
    //1 不能使用UIColor，必须使用CGColor
    //2 不能将CGColor包装为NSValue 需要使用桥接来转化为id类型
    NSArray *colors = @[(__bridge id)[UIColor redColor].CGColor,
                        (__bridge id)[UIColor orangeColor].CGColor,
                        (__bridge id)[UIColor yellowColor].CGColor,
                        (__bridge id)[UIColor greenColor].CGColor,
                        (__bridge id)[UIColor cyanColor].CGColor,
                        (__bridge id)[UIColor blueColor].CGColor,
                        (__bridge id)[UIColor purpleColor].CGColor
                        ];
    
    CAKeyframeAnimation *animation2 = [CAKeyframeAnimation animationWithKeyPath:@"backgroundColor"];
    animation2.values = colors;
    
    //设置动画时间
    animation2.duration = 10;
    //重复旋转动画
    animation2.repeatCount = HUGE_VALF;

//    [_animationView.layer addAnimation:animation2 forKey:nil];
    
    
    //创建动画组
    CAAnimationGroup *group = [CAAnimationGroup animation];
    //将动画加入到动画组中去
    group.animations = @[animation1, animation2];
    
    //设置组动画的持续时间
    group.duration = 10;
    
    [_animationView.layer addAnimation:group forKey:nil];
    
}



- (void)viewDidLoad {
    [super viewDidLoad];
    
    _animationView.layer.anchorPoint = CGPointMake(0.5, 0.5);
    
    
}

@end