我使用下面的代码执行“添加到购物车动画”， 我最近使用swift构建了一个新的应用程序，我很难将此代码从Objective C转换为Swift。
此代码为UITableView按钮设置动画以跳转到购物车（UItabBar项目）
// AddToCart button (cell Button)
-(void)AddToCart:(UIButton*)sender {
// get the selected index
CGPoint center= sender.center;
CGPoint rootViewPoint = [sender.superview convertPoint:center toView:self.Tableview];
NSIndexPath *indexPath = [self.Tableview indexPathForRowAtPoint:rootViewPoint];
// add to cart
[checkoutCart AddItem:SandwichArray[indexPath.row]];
MyCell* cell =(MyCell*)[self.Tableview dequeueReusableCellWithIdentifier:@"Cell"];
// grab the imageview
UIImageView *imgV = (UIImageView*)[cell viewWithTag:400];
// get the exact location of image
CGRect rect = [imgV.superview convertRect:imgV.frame fromView:nil];
rect = CGRectMake(5, (rect.origin.y*-1)-10, imgV.frame.size.width, imgV.frame.size.height);
// create new duplicate image
UIImageView *starView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"AddItem.png"]];
[starView setFrame:rect];
starView.layer.cornerRadius=5;
starView.layer.borderColor=[[UIColor blackColor]CGColor];
starView.layer.borderWidth=1;
[self.view addSubview:starView];
// apply position animation
CAKeyframeAnimation *pathAnimation = [CAKeyframeAnimation animationWithKeyPath:@"position"];
pathAnimation.calculationMode = kCAAnimationPaced;
pathAnimation.fillMode = kCAFillModeForwards;
pathAnimation.removedOnCompletion = NO;
pathAnimation.duration=0.75;
pathAnimation.delegate=self;
// tabbar Position
CGPoint endPoint = CGPointMake(210+rect.size.width/2, 390+rect.size.height/2);
CGMutablePathRef curvedPath = CGPathCreateMutable();
CGPathMoveToPoint(curvedPath, NULL, starView.frame.origin.x, starView.frame.origin.y);
CGPathAddCurveToPoint(curvedPath, NULL, endPoint.x, starView.frame.origin.y, endPoint.x, starView.frame.origin.y, endPoint.x, endPoint.y);
pathAnimation.path = curvedPath;
CGPathRelease(curvedPath);
// apply transform animation
CABasicAnimation *basic=[CABasicAnimation animationWithKeyPath:@"transform"];
[basic setToValue:[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.25, 0.25, 0.25)]];
[basic setAutoreverses:NO];
[basic setDuration:0.75];
[starView.layer addAnimation:pathAnimation forKey:@"curveAnimation"];
[starView.layer addAnimation:basic forKey:@"transform"];
[starView performSelector:@selector(removeFromSuperview) withObject:nil afterDelay:0.75];
[self performSelector:@selector(reloadBadgeNumber) withObject:nil afterDelay:0.75];
}
这是我的快捷代码
//AddToCart button (of cell)
func AddToCart(sender:UIButton){
// get the selected index
var center:CGPoint = sender.center;
var rootViewPoint:CGPoint = sender.superview!.convertPoint(center, toView:self.TableView)
var indexPath:NSIndexPath = self.TableView!.indexPathForRowAtPoint(rootViewPoint)!
// add to cart
//ShopingCart.AddItem(item)
var cell:Menu_Cell = self.TableView!.dequeueReusableCellWithIdentifier("cell") as Menu_Cell
//grab the imageview using cell
var imgV:UIImageView = cell.imageView!
// get the exact location of image
var rect:CGRect = imgV.superview!.convertRect(imgV.frame ,fromView:nil)
rect = CGRectMake(5, (rect.origin.y*(-1))-10, imgV.frame.size.width, imgV.frame.size.height);
// create new duplicate image
var starView:UIImageView = cell.imageView!
starView.frame = rect
starView.layer.cornerRadius=5;
starView.layer.borderWidth=1;
self.view.addSubview(starView)
// position animation
// var pathAnimation:CAKeyframeAnimation = CAKeyframeAnimation.animationWithKeyPath("position")
var pathAnimation:CAPropertyAnimation = CAPropertyAnimation(keyPath: "position")
// pathAnimation.calculationMode = kCAAnimationPaced
pathAnimation.fillMode = kCAFillModeForwards
pathAnimation.removedOnCompletion = false
pathAnimation.duration=0.75
pathAnimation.delegate=self
// tab-bar right side item frame-point = end point
var endPoint:CGPoint = CGPointMake(210+rect.size.width/2, 390+rect.size.height/2);
// animation position animation
var curvedPath:CGMutablePathRef = CGPathCreateMutable();
CGPathMoveToPoint(curvedPath, nil, starView.frame.origin.x, starView.frame.origin.y);
CGPathAddCurveToPoint(curvedPath, nil, endPoint.x, starView.frame.origin.y, endPoint.x, starView.frame.origin.y, endPoint.x, endPoint.y);
// pathAnimation.path = curvedPath;
// apply transform animation
// var basic:CABasicAnimation = CABasicAnimation.animationWithKeyPath("transform")
var basic:CAPropertyAnimation = CAPropertyAnimation(keyPath: "transform")
// basic.valueForKeyPath(NSValue.valueWithCATransform3D(CATransform3DMakeScale(0.25, 0.25, 0.25)))
// basic.setAutoreverses(false)
basic.duration = 0.75
starView.layer.addAnimation(pathAnimation,forKey: "curveAnimation")
starView.layer.addAnimation(basic,forKey:"transform")
starView.removeFromSuperview()
// [self performSelector:@selector(reloadBadgeNumber) withObject:nil afterDelay:0.75];
我在这里得到错误：
starView.layer.addAnimation（pathAnimation，forKey：“curveAnimation”） tarView.layer.addAnimation（基本，forKey： “变换”）
**'-[CAPropertyAnimation _copyRenderAnimationForLayer:]: unrecognized selector sent to instance 0x7fd612c11780'**
有什么建议吗？
答案 0 :(得分：1)
XMLStreamWriter不是正确答案。确保正确给出图层中动画的键值。我也面临同样的问题并改为CAKeyframeAnimation。我的任务与你不同。
答案 1 :(得分：0)
如果您的代码中缺少QuartzCore标头的导入，则会出现该错误。所以你需要导入QuartzCore框架：
import QuartzCore
答案 2 :(得分：0)
var center:CGPoint = sender.center;
var rootViewPoint:CGPoint = sender.superview!.convertPoint(center, toView:self.tableView)
var indexPath:NSIndexPath = self.tableView!.indexPathForRowAtPoint(rootViewPoint)!
var cell:Cell_3 = self.tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! Cell_3
var imgV：UITextField = cell.tf_adet！
// get the exact location of image
var rect:CGRect = imgV.superview!.convertRect(imgV.frame ,fromView:nil)
rect = CGRectMake(rect.origin.x, (rect.origin.y*(-1))-10, imgV.frame.size.width, imgV.frame.size.height);
// create new duplicate image
var starView:UITextField = cell.tf_adet
starView.frame = rect
starView.layer.cornerRadius=5;
starView.layer.borderWidth=1;
self.view.addSubview(starView)
// now create a bezier path that defines our curve
// the animation function needs the curve defined as a CGPath
// but these are more difficult to work with, so instead
// we'll create a UIBezierPath, and then create a
// CGPath from the bezier when we need it
let path = UIBezierPath()
// tab-bar right side item frame-point = end point
var endPoint:CGPoint = CGPointMake(140+rect.size.width/2, 790+rect.size.height/2);
path.moveToPoint(CGPointMake(starView.frame.origin.x, starView.frame.origin.y))
path.addCurveToPoint(CGPoint(x: endPoint.x, y: endPoint.y),
controlPoint1: CGPoint(x: endPoint.x, y: starView.frame.origin.y),
controlPoint2: CGPoint(x: endPoint.x, y: starView.frame.origin.y ))
// create a new CAKeyframeAnimation that animates the objects position
let anim = CAKeyframeAnimation(keyPath: "position")
// set the animations path to our bezier curve
anim.path = path.CGPath
// set some more parameters for the animation
// this rotation mode means that our object will rotate so that it's parallel to whatever point it is currently on the curve
// anim.rotationMode = kCAFillModeForwards
anim.fillMode = kCAFillModeForwards
//anim.repeatCount = Float.infinity
anim.duration = 0.65
anim.removedOnCompletion = false
anim.delegate=self
// apply transform animation
var animation : CABasicAnimation = CABasicAnimation(keyPath: "transform");
var transform : CATransform3D = CATransform3DMakeScale(2,2,1 ) //0.25, 0.25, 0.25);
//animation.setValue(NSValue(CATransform3D: transform), forKey: "scaleText");
animation.duration = 0.75;
starView.layer.addAnimation(anim, forKey: "curveAnimation")
starView.layer.addAnimation(animation, forKey: "transform");