Question

我正在试图扭曲对象卡，这是我正在做的UIView：

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:DEPLACEMENT_ANIMATION_DUREE_SECONDES_DROITE];
scene.carte17.layer.position = positionInit;
if (scene.carte17.angleCarte == 15.f) {
    scene.carte17.transform = CGAffineTransformRotate(scene.carte17.transform, degreesToRadians(30));
    scene.carte17.angleCarte = 45.f;
}
[UIView commitAnimations];

它正在发挥作用！我的卡倾斜到30°，这很好。我正在玩setAnimationDuration来控制速度。

我想使用CoreAnimation和kCAMediaTimingFunctionEaseInEaseOut来获得更好的动画效果，但我不会对核心动画做同样的想法我正在尝试这个：

[CATransaction begin];
[CATransaction setAnimationDuration:.5f];
[CATransaction setAnimationTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
scene.carte17.layer.position = positionInit;
if (scene.carte17.angleCarte == 15.f) {
    CABasicAnimation *animation;
    animation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
    animation.fromValue = [NSNumber numberWithFloat:0.0];
    animation.toValue = [NSValue valueWithCGAffineTransform:CGAffineTransformRotate(scene.carte17.transform, degreesToRadians(30))];
    animation.timingFunction = [CAMediaTimingFunction functionWithName: kCAMediaTimingFunctionEaseInEaseOut];
    animation.delegate = self;
    [scene.carte17.layer addAnimation:animation forKey:@"rotationAnimation"];

    scene.carte17.angleCarte = 45.f;
}
[CATransaction commit];

但它不起作用......你能帮帮我吗？

Answer 1

为什么不这样称呼：

[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];

但由于UIViewAnimationCurveEaseInOut是默认值，因此这是一种过度杀伤。

ios CoreAnimation

1 个答案: