我创建了一个UIGestureRecognizer来仅用一根手指旋转View。View在开始时旋转，但一旦达到一定程度，旋转就会向另一个方向旋转。你能帮我写代码吗？UIViewcontrolleroverridefuncviewDidLoad(){super.viewDidLoad()//Doanyadditionalsetupafterloadingtheview.letwheel=TestWheelView()wheel.frame=CGRect.init(x:self.view.center.x-120,y:self.view.center.y-120,width:240,hei

我使用这段代码来旋转任何View:funcrotateAnimation(theView:UIView,duration:CFTimeInterval=20.0,repeatCount:Float=200,toValue:CGFloat=CGFloat(.pi*2.0)){letrotateAnimation=CABasicAnimation(keyPath:"transform.rotation")rotateAnimation.fromValue=0.0rotateAnimation.toValue=toValuerotateAnimation.duration=durationr

我有什么我有一个箭头图像(如左图)。当用户点击它时，它应该会随着动画旋转180度，并且应该看起来像正确的。我做了什么privatevoidrotate(floatdegree,finalinttoggleV){finalRotateAnimationrotateAnim=newRotateAnimation(0.0f,degree,RotateAnimation.RELATIVE_TO_SELF,0.5f,RotateAnimation.RELATIVE_TO_SELF,0.5f);rotateAnim.setDuration(500);toggle.startAnimation(ro

我有什么我有一个箭头图像(如左图)。当用户点击它时，它应该会随着动画旋转180度，并且应该看起来像正确的。我做了什么privatevoidrotate(floatdegree,finalinttoggleV){finalRotateAnimationrotateAnim=newRotateAnimation(0.0f,degree,RotateAnimation.RELATIVE_TO_SELF,0.5f,RotateAnimation.RELATIVE_TO_SELF,0.5f);rotateAnim.setDuration(500);toggle.startAnimation(ro