How to Render a Pie Chart on childviews in iOS? - ios

Question

How to render pie charts on child views? In my story board having 4 child views. I am trying to show 4 different pie charts based on the selection ( I am using segmented control which has 4 segments ). I tried with sample data but not able to render pie chart ( as it showing no data available ). How to add pie chart data to child views?
[ Note:- I am using danielgindib library and swift 3 ]
Screenshot of my storyboard
Storyboard screenshot 1
Storyboard screenshot 2
SecondViewController.swift
import UIKit
import Charts
class SecondViewController: UIViewController, ChartViewDelegate{
var controllerName:String?
#IBOutlet weak var pChartViewA: PieChartView!
#IBOutlet weak var pChartViewB: PieChartView!
#IBOutlet weak var pChartViewC: PieChartView!
#IBOutlet weak var pChartViewD: PieChartView!
override func viewDidLoad() {
super.viewDidLoad()
self.pChartViewA.delegate = self
// self.pChartViewB.delegate = self
//self.pChartViewC.delegate = self
// self.pChartViewD.delegate = self
self.pChartViewA.alpha = 1
//self.pChartView.delegate = self
// Pie Chart
pChartViewA.noDataText = "You need to provide data for the chart."
let pys1 = Array(1..<10).map { x in return sin(Double(x) / 2.0 / 3.141 * 1.5) * 100.0 }
let pyse1 = pys1.enumerated().map { x, y in return PieChartDataEntry(value: y, label: String(x)) }
let pdata = PieChartData()
let pds1 = PieChartDataSet(values: pyse1, label: "Hello")
pds1.colors = ChartColorTemplates.vordiplom()
pdata.addDataSet(pds1)
let paragraphStyle: NSMutableParagraphStyle = NSParagraphStyle.default.mutableCopy() as! NSMutableParagraphStyle
paragraphStyle.lineBreakMode = .byTruncatingTail
paragraphStyle.alignment = .center
let centerText: NSMutableAttributedString = NSMutableAttributedString(string: "Sample Screening Pie")
self.pChartViewA.centerAttributedText = centerText
self.pChartViewA.data = pdata
self.pChartViewA.chartDescription?.text = "Piechart Demo"
}
#IBAction func ChangeComponent(_ sender: AnyObject) {
if sender.selectedSegmentIndex == 0 {
UIView.animate(withDuration: 0.5, animations: {
self.pChartViewA.alpha = 1
self.pChartViewB.alpha = 0
self.pChartViewC.alpha = 0
self.pChartViewD.alpha = 0
// Pie Chart
self.pChartViewA.noDataText = "You need to provide data for the chart."
let pys1 = Array(1..<10).map { x in return sin(Double(x) / 2.0 / 3.141 * 1.5) * 100.0 }
let pyse1 = pys1.enumerated().map { x, y in return PieChartDataEntry(value: y, label: String(x)) }
let pdata = PieChartData()
let pds1 = PieChartDataSet(values: pyse1, label: "Hello")
pds1.colors = ChartColorTemplates.vordiplom()
pdata.addDataSet(pds1)
let paragraphStyle: NSMutableParagraphStyle = NSParagraphStyle.default.mutableCopy() as! NSMutableParagraphStyle
paragraphStyle.lineBreakMode = .byTruncatingTail
paragraphStyle.alignment = .center
let centerText: NSMutableAttributedString = NSMutableAttributedString(string: "Sample Screening Pie")
self.pChartViewA.centerAttributedText = centerText
self.pChartViewA.data = pdata
self.pChartViewA.chartDescription?.text = "Piechart Demo"
})
} else if sender.selectedSegmentIndex == 1 {
UIView.animate(withDuration: 0.5, animations: {
self.pChartViewA.alpha = 0
self.pChartViewB.alpha = 1
self.pChartViewC.alpha = 0
self.pChartViewD.alpha = 0
})
}
else if sender.selectedSegmentIndex == 2 {
UIView.animate(withDuration: 0.5, animations: {
self.pChartViewA.alpha = 0
self.pChartViewB.alpha = 0
self.pChartViewC.alpha = 1
self.pChartViewD.alpha = 0
})
}
else if sender.selectedSegmentIndex == 3 {
UIView.animate(withDuration: 0.5, animations: {
self.pChartViewA.alpha = 0
self.pChartViewB.alpha = 0
self.pChartViewC.alpha = 0
self.pChartViewD.alpha = 1
})
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
Thank you in advance.