Truncate value label of PieChart in Charts Library Swift - swift

Question

`class PieChartViewController: DemoBaseViewController {
#IBOutlet var chartView: PieChartView!
#IBOutlet var sliderX: UISlider!
#IBOutlet var sliderY: UISlider!
#IBOutlet var sliderTextX: UITextField!
#IBOutlet var sliderTextY: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
self.title = "Pie Chart"
self.setup(pieChartView: chartView)
chartView.delegate = self
chartView.holeRadiusPercent = 0.8
chartView.usePercentValuesEnabled = true
chartView.transparentCircleRadiusPercent = 0
chartView.drawHoleEnabled = true
chartView.transparentCircleColor = UIColor.white.withAlphaComponent(1)
chartView.drawCenterTextEnabled = true
chartView.centerText = nil
let l = chartView.legend
l.enabled = false
//MARK: Entry label Styling (Value Label Above PieChart)
chartView.entryLabelColor = .black
chartView.entryLabelFont = .systemFont(ofSize: 14, weight: .medium)
//MARK: Setting Offset
let frameOffset = chartView.frame.width * 0.12
chartView.setExtraOffsets(left: frameOffset, top: frameOffset, right: frameOffset, bottom: frameOffset)
self.slidersValueChanged(nil)
}
override func updateChartData() {
if self.shouldHideData {
chartView.data = nil
return
}
self.setDataCount()
}
func setDataCount() {
let entry1 = PieChartDataEntry(value: 22, label: "Apple.It is a fruit")
let entry2 = PieChartDataEntry(value: 33, label: "Zebra.It is an animal")
let entry3 = PieChartDataEntry(value: 31, label: "Eagle.It is a bird")
let entry4 = PieChartDataEntry(value: 14, label: "Asia.It is a continent")
var enteries: [PieChartDataEntry] = []
enteries.append(entry1)
enteries.append(entry2)
enteries.append(entry3)
enteries.append(entry4)
let set = PieChartDataSet(entries: enteries, label: "Knowledge")
set.drawIconsEnabled = false
set.sliceSpace = 0
set.selectionShift = 0
set.colors = ChartColorTemplates.vordiplom()
+ ChartColorTemplates.joyful()
+ ChartColorTemplates.colorful()
+ ChartColorTemplates.liberty()
+ ChartColorTemplates.pastel()
+ [UIColor(red: 51/255, green: 181/255, blue: 229/255, alpha: 1)]
// MARK: Setting Value Label
set.valueLinePart1OffsetPercentage = 0.20
set.valueLinePart1Length = 0.4
set.valueLinePart2Length = 0.4
set.valueLineColor = .black
set.valueTextColor = .black
set.xValuePosition = .outsideSlice
set.yValuePosition = .outsideSlice
let data = PieChartData(dataSet: set)
data.setValueFont(.systemFont(ofSize: 13, weight: .medium))
data.setValueTextColor(.black)
chartView.data = data
chartView.highlightValues(nil)
}
override func optionTapped(_ option: Option) {
chartView.setNeedsDisplay()
}
// MARK: - Actions
#IBAction func slidersValueChanged(_ sender: Any?) {
self.updateChartData()
}
}`
How to truncate or word wrap the value label in Pie Chart ?
I am using Charts Library in iOS.
If I add extra offset the pie chart shrink in smaller devices like iPhone 5s or iPhone SE.
If the text is large then the text goes out of the screen as you can see in the uploaded image. I am not able to find any properties (word wrap) to handle the large text issue.