Legend label missing in pie chart

[nbnitin]

I am using below code , it showing me value on my pie slices and colors in legend but not title or text of it .
Like ["jan","feb"] this is not showing not values are there , how can i rectify this?

func setChart(dataPoints: [String], values: [Double]) {

    var dataEntries: [ChartDataEntry] = []
    

    
    
    for i in 0..<dataPoints.count {
        let dataEntry1 = ChartDataEntry(x: Double(i), y: values[i], data: dataPoints[i] as AnyObject?)
        
        dataEntries.append(dataEntry1)
        
    }
    
    
   
let pieChartDataSet = PieChartDataSet(values: dataEntries, label: "hello")
    
    pieChartDataSet.sliceSpace = 2
    
    pieChartDataSet.yValuePosition = .outsideSlice
    
    
    let text = "Total \n Rs 100000"
   
    
    let style = NSMutableParagraphStyle()
    style.alignment = .center
    let attributes = [
        
        NSParagraphStyleAttributeName: style
    ]

    
    let range = (text as NSString).range(of: "Total")
    
    let attribute = NSMutableAttributedString.init(string: text)
    attribute.addAttribute(NSForegroundColorAttributeName, value: UIColor.lightGray , range: range)
    attribute.addAttributes(attributes, range: range)
    
   
    
    pieChart.drawEntryLabelsEnabled = true
    
    pieChart.centerAttributedText = attribute
          pieChart.holeRadiusPercent = 0.6
   pieChart.chartDescription?.enabled = false
    
   pieChart.legend.enabled  = true
pieChart.legend.direction = .rightToLeft
   
    
    var colors: [UIColor] = []
    
    let color1 = UIColor(hexString: "#1A3E72")
    colors.append(color1)
    
    let color2 = UIColor(hexString: "#2D9C3D")
    colors.append(color2)
    pieChartDataSet.colors = colors

    
 pieChart.animate(xAxisDuration: 2.0, yAxisDuration: 2.0)
   
    let pieChartData = PieChartData(dataSet: pieChartDataSet)
    
    
    pieChart.legend.enabled = true
    pieChart.data = pieChartData
   
    
   
    
    
    
    
    
}

let months = ["Jan", "Feb"]
let unitsSold = [25.0, 20.0]

[TheAbhiGoyal]

Mention the legend.enteries and make sure you're configuring legends before providing the dataSet.

[liuxuan30]

Check out ChartsDemo for details as well

[nbnitin]

Its in objective c , i cannt ... I made legend in viewdidload but its not still showing.

[liuxuan30]

well you should get familiar with objc. Besides, the code is pretty straight forward, even you don't know objc, you can know from its names, it's 99% consistent between objc and swift.
Bottom line: ChartsDemo-OSX is in swift.