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J'essaye de faire un commutateur vertical personnalisé avec CoreGraphics. J'ai l'arrière-plan de commutateur et le dessin de pouce de commutateur dans des vues séparées, mais pour une raison quelconque, je ne peux pas sembler placer la couleur de fond de la vue de pouce à clearcolor. Toute aide serait grandement appréciée!Dessin de dessin personnalisé UIView avec CoreGraphics
![import UIKit
import QuartzCore
class ThumbView:UIView {
var thumbPath = UIBezierPath()
init(frame: CGRect) {
super.init(frame: frame)
// self.opaque = false
// self.backgroundColor = UIColor.clearColor()
}
init(coder aDecoder: NSCoder!) {
super.init(coder: aDecoder)
self.opaque = false
self.backgroundColor = UIColor.clearColor()
}
override func drawRect(rect: CGRect) {
let contentFrame = rect
let context = UIGraphicsGetCurrentContext()
let bgPath = UIBezierPath(rect: self.frame)
let bgColor = UIColor.clearColor()
bgColor.setFill()
bgPath.fill()
self.backgroundColor = bgColor;
let white = UIColor(red: 1.000, green: 1.000, blue: 1.000, alpha: 1.000)
let shadowOffset = CGSizeMake(0.1, 3.1)
let shadowBlurRadius: CGFloat = 5
let shadow = UIColor.darkGrayColor()
CGContextSaveGState(context)
//// thumb Drawing
thumbPath = UIBezierPath(ovalInRect: CGRectMake(0, 0, rect.size.height, rect.size.width))
CGContextSaveGState(context)
CGContextSetShadowWithColor(context, shadowOffset, shadowBlurRadius, shadow.CGColor)
white.setFill()
thumbPath.fill()
CGContextRestoreGState(context)
}
}
class VerticalSwitch: UIView {
var switchBackgroundPath = UIBezierPath()
var thumbView = ThumbView()
init(frame: CGRect) {
super.init(frame: frame)
}
init(coder aDecoder: NSCoder!) {
super.init(coder: aDecoder)
self.clipsToBounds = true
thumbView = ThumbView()
NSLog("%@", NSStringFromCGRect(self.frame))
self.addSubview(thumbView)
}
override func layoutSubviews() {
thumbView.frame = CGRectMake(5, 5, self.frame.size.width - 10, self.frame.size.width - 10)
}
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
override func drawRect(rect: CGRect)
{
let contentFrame = rect
//// General Declarations
let context = UIGraphicsGetCurrentContext()
//// Color Declarations
let gDGreen = UIColor(red: 0.157, green: 0.475, blue: 0.153, alpha: 1.000)
//// Shadow Declarations
let innerShadow = UIColor.darkGrayColor().colorWithAlphaComponent(0.9)
let innerShadowOffset = CGSizeMake(0.1, -5.1)
let innerShadowBlurRadius: CGFloat = 10
//// switchBackground Drawing
switchBackgroundPath.moveToPoint(CGPointMake(contentFrame.minX + 85.36, contentFrame.minY + 0.06764 * contentFrame.height))
switchBackgroundPath.addCurveToPoint(CGPointMake(contentFrame.minX + 100, contentFrame.minY + 0.23095 * contentFrame.height), controlPoint1: CGPointMake(contentFrame.minX + 95.12, contentFrame.minY + 0.11274 * contentFrame.height), controlPoint2: CGPointMake(contentFrame.minX + 100, contentFrame.minY + 0.17184 * contentFrame.height))
switchBackgroundPath.addLineToPoint(CGPointMake(contentFrame.minX + 100, contentFrame.minY + 0.76905 * contentFrame.height))
switchBackgroundPath.addCurveToPoint(CGPointMake(contentFrame.minX + 85.36, contentFrame.minY + 0.93236 * contentFrame.height), controlPoint1: CGPointMake(contentFrame.minX + 100, contentFrame.minY + 0.82816 * contentFrame.height), controlPoint2: CGPointMake(contentFrame.minX + 95.12, contentFrame.minY + 0.88726 * contentFrame.height))
switchBackgroundPath.addCurveToPoint(CGPointMake(contentFrame.minX + 14.64, contentFrame.minY + 0.93236 * contentFrame.height), controlPoint1: CGPointMake(contentFrame.minX + 65.83, contentFrame.minY + 1.02255 * contentFrame.height), controlPoint2: CGPointMake(contentFrame.minX + 34.17, contentFrame.minY + 1.02255 * contentFrame.height))
switchBackgroundPath.addCurveToPoint(CGPointMake(contentFrame.minX, contentFrame.minY + 0.76905 * contentFrame.height), controlPoint1: CGPointMake(contentFrame.minX + 4.88, contentFrame.minY + 0.88726 * contentFrame.height), controlPoint2: CGPointMake(contentFrame.minX, contentFrame.minY + 0.82816 * contentFrame.height))
switchBackgroundPath.addLineToPoint(CGPointMake(contentFrame.minX, contentFrame.minY + 0.23095 * contentFrame.height))
switchBackgroundPath.addCurveToPoint(CGPointMake(contentFrame.minX + 14.64, contentFrame.minY + 0.06764 * contentFrame.height), controlPoint1: CGPointMake(contentFrame.minX, contentFrame.minY + 0.17184 * contentFrame.height), controlPoint2: CGPointMake(contentFrame.minX + 4.88, contentFrame.minY + 0.11274 * contentFrame.height))
switchBackgroundPath.addCurveToPoint(CGPointMake(contentFrame.minX + 85.36, contentFrame.minY + 0.06764 * contentFrame.height), controlPoint1: CGPointMake(contentFrame.minX + 34.17, contentFrame.minY + -0.02255 * contentFrame.height), controlPoint2: CGPointMake(contentFrame.minX + 65.83, contentFrame.minY + -0.02255 * contentFrame.height))
switchBackgroundPath.closePath()
gDGreen.setFill()
switchBackgroundPath.fill()
////// switchBackground Inner Shadow
CGContextSaveGState(context)
CGContextClipToRect(context, switchBackgroundPath.bounds)
CGContextSetShadow(context, CGSizeMake(0, 0), 0)
CGContextSetAlpha(context, CGColorGetAlpha(innerShadow.CGColor))
CGContextBeginTransparencyLayer(context, nil)
let switchBackgroundOpaqueShadow = innerShadow.colorWithAlphaComponent(1)
CGContextSetShadowWithColor(context, innerShadowOffset, innerShadowBlurRadius, switchBackgroundOpaqueShadow.CGColor)
CGContextSetBlendMode(context, kCGBlendModeSourceOut)
CGContextBeginTransparencyLayer(context, nil)
switchBackgroundOpaqueShadow.setFill()
switchBackgroundPath.fill()
CGContextEndTransparencyLayer(context)
CGContextRestoreGState(context)
}
override func touchesBegan(touches: NSSet!, withEvent event: UIEvent!) {
}
}]
Essayez d'ajouter 'CGContextClearRect (contexte, rect)' juste après que vous avez obtenu contexte actuel . – Keenle
@Keenle Ne fonctionne pas, ayant toujours le même problème. – JonahGabriel
Dans la méthode 'init', essayez de définir' self.layer.backgroundColor = UIColor.clearColor(). CGColor' – Keenle