Ios 使用核心动画制作UIView动画？

我在使用核心动画正确设置UiView动画时遇到了一些问题。这是我的密码：

CABasicAnimation* animation = [CABasicAnimation animationWithKeyPath:@"position"];
[animation setFromValue:[NSValue valueWithCGPoint:self.view.layer.position]];
[animation setToValue:[NSValue valueWithCGPoint:CGPointMake(250, self.view.layer.position.y)]]; //I want to move my UIView 250 pts to the right
[animation setDuration:1];
[animation setDelegate:self]; //where self is the view controller of the view I want to animate
[animation setRemovedOnCompletion:NO];
[self.view.layer addAnimation:animation forKey:@"toggleMenu"]; //where self.view returns the view I want to animate

我还实现了以下委托方法：

-(void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag{
    if(flag)
        [self.view.layer setTransform:CATransform3DMakeTranslation(250, 0, 0)]; //set layer to its final position
}

我正在努力使UIView向右移动250个点。但是，当触发动画时，“我的视图”开始移动，但动画似乎在视图向右移动250个点之前结束，从而导致UIView“传送”到其最终位置。我似乎不知道是什么导致了这种行为

我还尝试使用UIView方法

+（void）animateWithDuration:animations:

，这种方法非常有效。然而，我试图实现一种微妙的“反弹”效果，我更愿意使用

setTimingFunction:functionWithControlPoints:

方法来实现它，而不是使用多个回调

感谢您的帮助和建议。

• 像这样试试

卡巴斯基化*旋转化

    rotationAnimation = [CABasicAnimation animationWithKeyPath:@"position"];

    rotationAnimation.fromValue=[NSValue valueWithCGPoint:CGPointMake([view center].x, [view center].y)];
    rotationAnimation.toValue=[NSValue valueWithCGPoint:CGPointMake([view center].x+250, [view center].y)];

    rotationAnimation.duration = 1.0+i;
    rotationAnimation.speed = 3.0;

    rotationAnimation.cumulative = YES;
    rotationAnimation.repeatCount = 1.0;
    rotationAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];

    [view.layer addAnimation:rotationAnimation forKey:@"position"];

---

如果您的目标是移动视图，则代码应如下所示：

CABasicAnimation* animation = [CABasicAnimation animationWithKeyPath:@"position"];
[animation setFromValue:[NSValue valueWithCGPoint:self.view.layer.position]];
CGPoint p = self.view.layer.position;
p.x += 250;
self.view.layer.position = p;
[animation setDuration:1];
[animation setRemovedOnCompletion:NO];
[self.view.layer addAnimation:animation forKey:@"toggleMenu"];

---

您应该真正更改视图（图层）的位置。否则，在删除动画时，视图将保持在其以前的位置。这是

ui查看动画

和

Core动画

之间的区别。对于反弹，您可以尝试在位置上使用关键帧动画。

CABasicAnimation* animation = [CABasicAnimation animationWithKeyPath:@"position"];
[animation setFromValue:[NSValue valueWithCGPoint:view.layer.position]];
CGPoint newPosition = CGPointMake(200, 300);
view.layer.position = p;
[animation setDuration:0.5f];
[animation setRemovedOnCompletion:NO];
[group setFillMode:kCAFillModeForwards];
[[view layer] addAnimation:animation forKey:@"position"];