iphone - 在屏幕上旋转和平移UIImageView

Question

如何旋转并在屏幕的一侧平移UIImageView，然后从另一侧返回。
可以说，我有一个要旋转的轮子，该轮子要从中间旋转并平移，然后从屏幕移到左侧，然后从右侧“返回”并回到中间。

我使用以下代码旋转并在屏幕外平移；

        CABasicAnimation* rotationAnimation;
        rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
        rotationAnimation.toValue = [NSNumber numberWithFloat: -M_PI * 2.0 /* full rotation*/ * 2 * 1 ];
        rotationAnimation.duration = 1;
        rotationAnimation.cumulative = YES;
        rotationAnimation.repeatCount = 1.0; 
        rotationAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
        rotationAnimation.delegate = self;

        CABasicAnimation* translationAnimation;
        translationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.translation.x"];
        translationAnimation.toValue = [NSNumber numberWithFloat:-700];
        translationAnimation.duration = 1;
        translationAnimation.cumulative = YES;
        translationAnimation.repeatCount = 1.0; 
        translationAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
        translationAnimation.removedOnCompletion = NO;
        translationAnimation.fillMode = kCAFillModeForwards;

Dunno如果这是正确的方法，所以请帮助!

Answer 1

试试这个，它将为您工作

  CABasicAnimation* rotationAnimation;
    rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
    rotationAnimation.toValue = [NSNumber numberWithFloat: -M_PI * 2.0 /* full rotation*/ * 2 * 1 ];
    rotationAnimation.duration = 1;
    rotationAnimation.cumulative = YES;
    rotationAnimation.repeatCount = 1.0; 
    rotationAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
    rotationAnimation.delegate = self;

    CABasicAnimation* translationAnimation;
    translationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.translation.x"];
    translationAnimation.toValue = [NSNumber numberWithFloat:-700];
    translationAnimation.duration = 1;
    translationAnimation.cumulative = YES;
    translationAnimation.repeatCount = 1.0; 
    translationAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
    translationAnimation.removedOnCompletion = NO;
    translationAnimation.fillMode = kCAFillModeForwards;



    CAAnimationGroup *group = [CAAnimationGroup animation];
    group.animations = [NSArray arrayWithObjects:rotationAnimation,translationAnimation, nil];
    group.delegate = self;
    group.removedOnCompletion = NO;
    group.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];

    [[self.imageView.layer addAnimation:group forKey:@"randt"];