执行子视图子类的动画

Question

我有一个名为ParentViewController的UIViewController。我有一个名为CustomView的UIView自定义类。它包括一些ImageView和执行动画的功能。

CustomView.h

@interface CustomView : UIView
@property (weak, nonatomic) IBOutlet UIImageView *human;
@property (weak, nonatomic) IBOutlet UIImageView *shadow;
+ (id)CustomView;
- (void)executeAnimation;
@end

在CustomView.m中，我执行了如下动画：

-(void)executeAnimation{
    self.animation1InProgress = YES;
    [UIView animateKeyframesWithDuration:3.0 delay:0.0 options:UIViewAnimationCurveLinear animations:^{
        self.human.frame = CGRectMake(self.human.frame.origin.x, self.human.frame.origin.y + 300, self.human.frame.size.width, self.human.frame.size.height);
    } completion:^(BOOL finished){
        self.animation1InProgress = NO;
    }];
}

现在在ParentViewController.m中，我添加了没有任何动画的CustomView

//init custom
customView = [CustomView initCustomView];
[self.view addSubview:centerLocationView];

这段代码还可以。我可以初始化并将Subview添加到ParentViewController中。但每当我想执行有关CustomView的动画时。我在ParentViewController.m:中调用以下代码

[customView executeAnimation];

父视图中没有任何更改。有人知道在ParentViewController上执行这个动画的方法吗？

提前感谢。

Answer 1

如果您真的想使用+[UIView animateKeyframesWithDuration:delay:options:animations:completion:]，您应该向animations块添加关键帧：

-(void)executeAnimation{
    self.animation1InProgress = YES;
    [UIView animateKeyframesWithDuration:3.0 delay:0.0 options:UIViewAnimationCurveLinear animations:^{
        [UIView addKeyframeWithRelativeStartTime:0.0 relativeDuration:1.0 animations:^{
            self.human.frame = CGRectMake(self.human.frame.origin.x, self.human.frame.origin.y + 300, self.human.frame.size.width, self.human.frame.size.height);
        }];
    } completion:^(BOOL finished){
        self.animation1InProgress = NO;
    }];
}

否则，只需使用[UIView animateWithDuration:animations:completion:]:

-(void)executeAnimation{
    self.animation1InProgress = YES;
    [UIView animateWithDuration:3.0 delay:0.0 options:UIViewAnimationCurveLinear animations:^{
        self.human.frame = CGRectMake(self.human.frame.origin.x, self.human.frame.origin.y + 300, self.human.frame.size.width, self.human.frame.size.height);
    } completion:^(BOOL finished){
        self.animation1InProgress = NO;
    }];
}