[英]How to make waved progress bar in swift?
您可以創建自定義視圖,然后手動繪制垂直線。 主要程序供參考:
import UIKit
class WavedProgressView: UIView {
var lineMargin:CGFloat = 2.0
var volumes:[CGFloat] = [0.5,0.3,0.2,0.6,0.4,0.5,0.8,0.6,0.4]
override init(frame: CGRect) {
super.init(frame: frame)
self.backgroundColor = UIColor.darkGray
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
self.backgroundColor = UIColor.darkGray
}
override var frame: CGRect {
didSet{
self.drawVerticalLines()
}
}
var lineWidth:CGFloat = 3.0{
didSet{
self.drawVerticalLines()
}
}
func drawVerticalLines() {
let linePath = CGMutablePath()
for i in 0..<self.volumes.count {
let height = self.frame.height * volumes[i]
let y = (self.frame.height - height) / 2.0
linePath.addRect(CGRect(x: lineMargin + (lineMargin + lineWidth) * CGFloat(i), y: y, width: lineWidth, height: height))
}
let lineLayer = CAShapeLayer()
lineLayer.path = linePath
lineLayer.lineWidth = 0.5
lineLayer.strokeColor = UIColor.white.cgColor
lineLayer.fillColor = UIColor.white.cgColor
self.layer.sublayers?.removeAll()
self.layer.addSublayer(lineLayer)
}
}
並且請自己使它更完美,例如:處理事件,應用默認顏色和突出顯示的顏色等。
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