BYR Achieve · 镜像论坛

[问题]Swift莫名其妙的的问题，求解惑！

2015/7/13镜像同步6 回复

划线的部分给我报错说FaceUIView.Type does not have a member named 'dataSource' import UIKit protocol FaceViewDataSource : class { func smilinessForFaceView(sender : FaceUIView) ->Double? } @IBDesignable class FaceUIView: UIView { @IBInspectable var scale :CGFloat = 0.5 { didSet { setNeedsDisplay()}} @IBInspectable var faceCenter : CGPoint { let newCenter = convertPoint(center, fromView: superview) println(newCenter.x) return newCenter } var faceRadius : CGFloat { return min(bounds.size.width, bounds.size.height) / 2 * scale } var lineWidth : CGFloat = 3 { didSet {setNeedsDisplay()}} var color : UIColor = UIColor.blueColor() {didSet {setNeedsDisplay()}} weak var dataSource : FaceViewDataSource? let smiliness = dataSource?.smilinessForFaceView(self) ?? 0.0 private struct Scaling{ static let FaceRadiusToEyeRadiusRatio : CGFloat = 10 static let FaceRadiusToEyeOffsetRatio : CGFloat = 3 static let FaceRadiusToEyeSeparationRatio : CGFloat = 1.5 static let FaceRadiusToMouthWidthRatio : CGFloat = 1 static let FaceRadiusToMouthHeightRatio : CGFloat = 3 static let FaceRadiusToMouthOffsetRatio : CGFloat = 3 } private func bezierPathForSmile(fractionOfMaxSmile: Double)->UIBezierPath { let mouthWidth = faceRadius / Scaling.FaceRadiusToMouthWidthRatio let mouthHeight = faceRadius / Scaling.FaceRadiusToMouthHeightRatio let mouthVerticalOffset = faceRadius / Scaling.FaceRadiusToMouthOffsetRatio let smileHeight = CGFloat(max(min(fractionOfMaxSmile, 1), -1)) * mouthHeight let start = CGPoint(x: faceCenter.x - mouthWidth / 2, y: faceCenter.y + mouthVerticalOffset) let end = CGPoint(x: start.x + mouthWidth, y: start.y) let cp1 = CGPoint(x: start.x + mouthWidth, y: start.y + smileHeight) let cp2 = CGPoint(x: end.x - mouthWidth, y: cp1.y ) let path = UIBezierPath() path.moveToPoint(start) path.addCurveToPoint(end, controlPoint1: cp1, controlPoint2: cp2) path.lineWidth = lineWidth return path } func scale(gesture : UIPinchGestureRecognizer){ if gesture.state == .Changed { scale *= gesture.scale gesture.scale = 1 } } override func drawRect(rect: CGRect) { let facePath = UIBezierPath(arcCenter: faceCenter, radius: faceRadius, startAngle: 0, endAngle: CGFloat(2*M_PI), clockwise: true) facePath.lineWidth = lineWidth color.set() facePath.stroke() let smiliness = 0.75 let smilePath = bezierPathForSmile(smiliness) smilePath.stroke() } }

订阅后，新回复会通过你的通知中心匿名送达。