如何实现图片的3D旋转，而且是不停旋转？

Question

我的代码是这样的：
//ViewController.m
//核心动画
#import"ViewController.h"
@interfaceViewController()
@property(weak,nonatomic)IBOutletUIImageView*imageView;
@end
@implementationViewController
-(void)viewDidLoad{
[superviewDidLoad];
}
-(void)touchesBegan:(NSSet*)toucheswithEvent:(UIEvent*)event{
[UIViewanimateWithDuration:3animations:^{
self.imageView.layer.transform=CATransform3DMakeRotation(M_PI,0,1,1);
}];
}
-(void)didReceiveMemoryWarning{
[superdidReceiveMemoryWarning];
}
@end
但是这样做旋转了一次就不在旋转了。请问如何实现不停的旋转呢？（按照Y轴）

Answer 1

[UIViewanimateWithDuration:3delay:0options:UIViewAnimationOptionRepeatanimations:^{}completion:^(BOOLfinished){}];

Answer 2

LZ的代码,并不是按照Y找转,Y,Z同时都会动,按Y轴循环转动,有以下两种方法可供参考,推荐第一种方法,过渡更平滑,自然.方法一:CABasicAnimation*rotationAnimation;rotationAnimation=[CABasicAnimationanimationWithKeyPath:@"transform.rotation.y"];rotationAnimation.toValue=[NSNumbernumberWithFloat:M_PI*2.0];rotationAnimation.duration=3;rotationAnimation.cumulative=YES;rotationAnimation.repeatCount=MAXFLOAT;[self.imageView.layeraddAnimation:rotationAnimationforKey:@"rotationAnimation"];方法二:[UIViewanimateWithDuration:3delay:0options:UIViewAnimationOptionRepeatanimations:^{self.imageView.layer.transform=CATransform3DMakeRotation(M_PI,0,1,0);}completion:^(BOOLfinished){self.imageView.layer.transform=CATransform3DMakeRotation(M_PI,0,1,0);}];