원의 왼쪽 또는 오른쪽 절반 만 그립니다.원의 절반 만 그립니다.
아무런 문제없이 0에서 0.5 (오른쪽)까지 원을 그릴 수 있습니다. 그러나 원을 0.5에서 1 (왼쪽)으로 그리는 것은 효과가 없습니다.
전화 : 이것은 내 코드입니다
addCircleView(circle, isForeground: false, duration: 0.0, fromValue: 0.5, toValue: 1.0)
:
func addCircleView(myView : UIView, isForeground : Bool, duration : NSTimeInterval, fromValue: CGFloat, toValue : CGFloat) -> CircleView {
let circleWidth = CGFloat(280)
let circleHeight = circleWidth
// Create a new CircleView
let circleView = CircleView(frame: CGRectMake(0, 0, circleWidth, circleHeight))
//Setting the color.
if (isForeground == true) {
circleView.setStrokeColor((UIColor(hexString: "#ffefdb")?.CGColor)!)
} else {
// circleLayer.strokeColor = UIColor.grayColor().CGColor
//Chose to use hexes because it's much easier.
circleView.setStrokeColor((UIColor(hexString: "#51acbc")?.CGColor)!)
}
myView.addSubview(circleView)
//Rotate the circle so it starts from the top.
circleView.transform = CGAffineTransformMakeRotation(-1.56)
// Animate the drawing of the circle
circleView.animateCircleTo(duration, fromValue: fromValue, toValue: toValue)
return circleView
}
원 뷰 클래스
당신은 설정해야import UIKit
extension UIColor {
/// UIColor(hexString: "#cc0000")
internal convenience init?(hexString:String) {
guard hexString.characters[hexString.startIndex] == Character("#") else {
return nil
}
guard hexString.characters.count == "#000000".characters.count else {
return nil
}
let digits = hexString.substringFromIndex(hexString.startIndex.advancedBy(1))
guard Int(digits,radix:16) != nil else{
return nil
}
let red = digits.substringToIndex(digits.startIndex.advancedBy(2))
let green = digits.substringWithRange(Range<String.Index>(digits.startIndex.advancedBy(2)..<digits.startIndex.advancedBy(4)))
let blue = digits.substringWithRange(Range<String.Index>(digits.startIndex.advancedBy(4)..<digits.startIndex.advancedBy(6)))
let redf = CGFloat(Double(Int(red, radix:16)!)/255.0)
let greenf = CGFloat(Double(Int(green, radix:16)!)/255.0)
let bluef = CGFloat(Double(Int(blue, radix:16)!)/255.0)
self.init(red: redf, green: greenf, blue: bluef, alpha: CGFloat(1.0))
}
}
class CircleView: UIView {
var circleLayer: CAShapeLayer!
var from : CGFloat = 0.0;
override init(frame: CGRect) {
super.init(frame: frame)
self.backgroundColor = UIColor.clearColor()
// Use UIBezierPath as an easy way to create the CGPath for the layer.
// The path should be the entire circle.
let circlePath = UIBezierPath(arcCenter: CGPoint(x: frame.size.width/2.0, y: frame.size.height/2.0), radius: (frame.size.width - 10)/2, startAngle: 0.0, endAngle: CGFloat(M_PI * 2.0), clockwise: true)
// Setup the CAShapeLayer with the path, colors, and line width
circleLayer = CAShapeLayer()
circleLayer.path = circlePath.CGPath
circleLayer.fillColor = UIColor.clearColor().CGColor
//I'm going to change this in the ViewController that uses this. Not the best way, I know but alas.
circleLayer.strokeColor = UIColor.redColor().CGColor
//You probably want to change this width
circleLayer.lineWidth = 3.0;
// Don't draw the circle initially
circleLayer.strokeEnd = 0.0
// Add the circleLayer to the view's layer's sublayers
layer.addSublayer(circleLayer)
}
func setStrokeColor(color : CGColorRef) {
circleLayer.strokeColor = color
}
// This is what you call if you want to draw a full circle.
func animateCircle(duration: NSTimeInterval) {
animateCircleTo(duration, fromValue: 0.0, toValue: 1.0)
}
// This is what you call to draw a partial circle.
func animateCircleTo(duration: NSTimeInterval, fromValue: CGFloat, toValue: CGFloat){
// We want to animate the strokeEnd property of the circleLayer
let animation = CABasicAnimation(keyPath: "strokeEnd")
// Set the animation duration appropriately
animation.duration = duration
// Animate from 0 (no circle) to 1 (full circle)
animation.fromValue = 0
animation.toValue = toValue
// Do an easeout. Don't know how to do a spring instead
animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseOut)
// Set the circleLayer's strokeEnd property to 1.0 now so that it's the
// right value when the animation ends.
circleLayer.strokeEnd = toValue
// Do the actual animation
circleLayer.addAnimation(animation, forKey: "animateCircle")
}
// required function
required init(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
작동하지 않는 기능은 무엇입니까? 움직이지 못하거나 전혀 그리지 않습니까? – ncke
오른쪽 원의 오른쪽 부분 만 그립니다. 하지만 나는 왼쪽이나 오른쪽 만 그릴 수 있기를 원한다. 왼쪽 그림이 작동하지 않는 것 같습니다. – da1lbi3
네, 무슨 뜻인지 알 겠어요. – ncke