0
我正在研究時間軸視圖。我在我的圖標中心繪製了一條線,並用填充顏色繪製了一個圓。但問題是,當我繪製圓時,它總是在圖標的頂部。現在圖標沒有顯示。我嘗試了圖層的位置。以下是我試過快速定位uiview圖層
override func draw(_ rect: CGRect) {
if let anchor = anchorView(){
let centreRelativeToTableView = anchor.superview!.convert(anchor.center, to: self)
// print("Anchor x origin : \(anchor.frame.size.origin.x)")
timelinePoint.position = CGPoint(x: centreRelativeToTableView.x , y: centreRelativeToTableView.y/2)
timeline.start = CGPoint(x: centreRelativeToTableView.x , y: 0)
timeline.middle = CGPoint(x: timeline.start.x, y: anchor.frame.origin.y)
timeline.end = CGPoint(x: timeline.start.x, y: self.bounds.size.height)
timeline.draw(view: self.contentView)
let circlePath = UIBezierPath(arcCenter: CGPoint(x: anchor.center.x,y: anchor.center.y - 20), radius: CGFloat(20), startAngle: CGFloat(0), endAngle:CGFloat(M_PI * 2), clockwise: true)
let shapeLayer = CAShapeLayer()
shapeLayer.path = circlePath.cgPath
//change the fill color
shapeLayer.fillColor = UIColor.randomFlat.cgColor
// shapeLayer.fillColor = UIColor.clear.cgColor
//you can change the stroke color
shapeLayer.strokeColor = UIColor.white.cgColor
//you can change the line width
shapeLayer.lineWidth = 5
shapeLayer.zPosition = 0
anchor.alpha = 1
//Set Anchor Z position
anchor.layer.zPosition = 2
shapeLayer.zPosition = 1
anchor.layer.addSublayer(shapeLayer)
// Setting icon to layer
/*let imageLayer = CALayer()
imageLayer.contents = newImage
anchor.layer.addSublayer(imageLayer)*/
// timelinePoint.draw(view: self.contentView)
}else{
print("this should not happen")
}
}
我想畫我的圖標與白色的色調在圓的上方。請幫助我