CAAnimationGroup的简单使用

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

    // 1.创建旋转动画对象

    CABasicAnimation *rotate = [CABasicAnimation animation];

    rotate.keyPath = @"transform.rotation";

    rotate.toValue = @(M_PI);

    

    // 2.创建缩放动画对象

    CABasicAnimation *scale = [CABasicAnimation animation];

    scale.keyPath = @"transform.scale";

    scale.toValue = @(0.0);

    

    // 3.平移动画

    CABasicAnimation *move = [CABasicAnimation animation];

    move.keyPath = @"transform.translation";

    move.toValue = [NSValue valueWithCGPoint:CGPointMake(100, 100)];

    

    // 4.将所有的动画添加到动画组中

    CAAnimationGroup *group = [CAAnimationGroup animation];

    group.animations = @[rotate, scale, move];

    group.duration = 2.0;

    group.removedOnCompletion = NO;

    group.fillMode = kCAFillModeForwards;

    

    [self.myvie.layer addAnimation:group forKey:nil];

}