CAAnimationGroup 组动画

- (IBAction)pressCAAnimationGroup:(UIButton *)sender {
    
    //创建动画
    CATransition *transition = [CATransition animation];
    transition.duration = 2;
    //2.设置过渡样式
    transition.type = kCATransitionReveal;//控制样式
    transition.subtype = kCATransitionFromBottom;//控制方向
    
    CAKeyframeAnimation *keyFrame = [CAKeyframeAnimation animationWithKeyPath:@"backgroundColor"];
    keyFrame.duration = 8;
    //    self.view.backgroundColor
    keyFrame.values = @[(id)[UIColor redColor].CGColor,(id)[UIColor blackColor].CGColor,(id)[UIColor orangeColor].CGColor,(id)[UIColor greenColor].CGColor,(id)[UIColor grayColor].CGColor,(id)[UIColor blueColor].CGColor,(id)[UIColor yellowColor].CGColor];
    //keyTimes 0 1/7 2/7 3/7 4/7 5/7 6/7 1(时间分配)
    //keyTimes第一个值是0不能改变;最后一个为1同理;
//    keyFrame.keyTimes = @[@(0.1),@(0.9),@(1.0),@(0.5),@(0.6),@(0.7),@(1.0)];//(手动时间分配)

    CABasicAnimation *basic = [CABasicAnimation animationWithKeyPath:@"bounds"];
    [basic setDuration:30];
    basic.fromValue = [NSValue valueWithCGRect:CGRectMake(0, 0, 150, 150)];
    basic.toValue = [NSValue valueWithCGRect:CGRectMake(0, 0, 200, 200)];

    
    //1.创建动画
    CAAnimationGroup *group = [CAAnimationGroup animation];
    //当组动画的时长 大于组中所有动画的最长的时间,动画的时间以组中最长的时间为准
    //当组动画的时长 小于组中所有动画的最长的时间,动画的时间以group的时长为准
    //最完美的时间是 组动画的时间和组中动画最长时间相等;
    group.duration = 10;
    //2.设置组动画
    group.animations =@[transition,keyFrame,basic];
    //3.添加动画
    [self.changeView.layer addAnimation:group forKey:nil];
}