lineChartView 轴标签在标签上添加额外的线答案

【问题标题】：lineChartView axis label add extra line on the labellineChartView 轴标签在标签上添加额外的线
【发布时间】：2020-08-14 02:15:30
【问题描述】：

嗨，我想在这样的每个标签上添加一行

我试过了

class XAxisRendererWithTicks: XAxisRenderer {

override func drawLabel(context: CGContext, formattedLabel: String, x: CGFloat, y: CGFloat, attributes: [NSAttributedString.Key: Any], constrainedToSize: CGSize, anchor: CGPoint, angleRadians: CGFloat) {

super.drawLabel(context: context, formattedLabel: formattedLabel, x: x, y: y, attributes: attributes, constrainedToSize: constrainedToSize, anchor: anchor, angleRadians: angleRadians)

context.beginPath()

context.move(to: CGPoint(x: x, y: y))
context.addLine(to: CGPoint(x: x, y: self.viewPortHandler.contentBottom))

context.strokePath()
}}

和

let customXAxisRenderer = XAxisRendererWithTicks(viewPortHandler: lineChartView.viewPortHandler, xAxis: lineChartView.xAxis, transformer: lineChartView.getTransformer(forAxis: .left))
    lineChartView.xAxisRenderer = customXAxisRenderer

这样可以做短线，但是没有标签的短线怎么去掉呢？

谢谢

【问题讨论】：

标签： ios swift charts swift4

【解决方案1】：

我通过这个解决了我的问题

override func drawLabel(context: CGContext, formattedLabel: String, x: CGFloat, y: CGFloat, attributes: [NSAttributedString.Key: Any], constrainedToSize: CGSize, anchor: CGPoint, angleRadians: CGFloat) {

    super.drawLabel(context: context, formattedLabel: formattedLabel, x: x, y: y, attributes: attributes, constrainedToSize: constrainedToSize, anchor: anchor, angleRadians: angleRadians)

    if(formattedLabel == ""){
        return
    }
    context.beginPath()

    context.move(to: CGPoint(x: x, y: y))
    context.addLine(to: CGPoint(x: x, y: self.viewPortHandler.contentBottom))

    context.strokePath()
}

【讨论】：