Question

在我的应用程序中，我尝试使用keyPath frame添加以下动画，如下所示

CABasicAnimation *animation=[CABasicAnimation animationWithKeyPath:@"frame"];
    animation.duration=0.6;
    animation.repeatCount=1;
    animation.delegate=self;
    animation.timingFunction=[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];
    animation.fromValue=[NSValue valueWithCGRect:self.layer.frame];
    animation.toValue=[NSValue valueWithCGRect:rect];//rect is a new frame 
    [self.layer addAnimation:animation forKey:@"frameChange"];
    [self setFrame:rect];

动画不会出现上述方法但是我成功获得了委托方法animationDidStop:(CAAnimation *)anim finished: 回电话。

但下面的动画定位属性运作良好

CABasicAnimation *animation=[CABasicAnimation animationWithKeyPath:@"position"];
animation.duration=0.6;
animation.repeatCount=1;
animation.delegate=self;
animation.timingFunction=[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];
animation.fromValue=[NSValue valueWithCGPoint:self.layer.position];
animation.toValue=[NSValue valueWithCGPoint:rect.origin];
[self.layer addAnimation:animation forKey:@"frameChange"];

为什么frame属性不是动画？

Answer 1

Frame不是可动画的属性。你必须为位置和边界制作动画。要将它们放在一起，将它们放在CAAnimationGroup中。

CABasicAnimation的Frame属性不是动画？

1 个答案: