How to set xValuePosition and yValuePosition properly in Pie Chart using Swift? - ios

Question

I am trying to put labels outside properly and lines to point them but the lines are overlapping and labels at the sides are not displayed completely. If length of the line is increased the labels are cut completely.
This is what I'm getting now.
What I want is
Code:
`class ViewController: UIViewController{
let pieView : PieChartView = {
let set = PieChartView()
set.translatesAutoresizingMaskIntoConstraints = false
set.drawHoleEnabled = false
set.chartDescription?.text = ""
return set
}()
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .white
navigationItem.title = "Pie"
setChart()
chartData()
}
let surveyData = ["cat": 20, "dog": 30, "both": 5, "neither": 45]
func setChart(){
view.addSubview(pieView)
pieView.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
pieView.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
pieView.widthAnchor.constraint(equalTo: view.widthAnchor, multiplier: 0.5).isActive = true
pieView.heightAnchor.constraint(equalTo: view.heightAnchor, multiplier: 0.5).isActive = true
}
func chartData(){
var data = [PieChartDataEntry]()
for (key,value) in surveyData{
let entry = PieChartDataEntry(value: Double(value), label: key)
data.append(entry)
}
let chart = PieChartDataSet(values: data, label: "")
chart.colors = ChartColorTemplates.material()
chart.sliceSpace = 2
chart.selectionShift = 5
chart.xValuePosition = .outsideSlice
chart.yValuePosition = .outsideSlice
chart.valueTextColor = .black
chart.valueLineWidth = 0.5
chart.valueLinePart1Length = 0.2
chart.valueLinePart2Length = 4
chart.drawValuesEnabled = true
let chartData = PieChartData(dataSet: chart)
pieView.data = chartData
}}`

Answer 1

Try this with your data set:
chart.selectionShift = 0