IOS Chart Error

[Vasu]

Hi,

We are evaluating Shinobi and Telerik for our upcoming IOS Dashboard app.  I am trying to build a sample graph and am able to generate using Shinobi.  But when I am trying to use Telerik chart, I am getting following error.

2014-11-24 10:02:01.237 CFOInfo[929:262175] Calling method which should be implemented in subclasses! Please FIX!
2014-11-24 10:02:01.238 CFOInfo[929:262175] Calling method which should be implemented in subclasses! Please FIX!

Following is my sample code of the view controller.

import UIKit<br><br>class VCReportData : UIViewController, APIReportDataControllerProtocol {<br>    var strReportName: String?<br>    let kReportFormat: String = "JSON"<br>    var metaDataInfo : [ModelMetaData] =  [ModelMetaData]()<br>    var reportDataInfo: [ModelReportData] = [ModelReportData]()<br>    var chartView: UIView!<br><br>    var api : APIReportDataController?<br><br>    @IBOutlet weak var labelReportName: UILabel!<br>    var chart = TKChart()<br><br>    required init(coder aDecoder: NSCoder) {<br>        super.init(coder: aDecoder)<br>    }<br>    <br>    override func viewDidLoad() {<br>        super.viewDidLoad()<br>        api = APIReportDataController(delegate : self)<br>        api?.getReportData(strReportName: strReportName!, strReportFormat: kReportFormat)<br>        labelReportName.text = strReportName!<br>      <br><br>    }<br><br>    func didReceiveAPIResults(results : NSDictionary) {<br>        var results : NSDictionary  = results<br>        let dataSet : NSDictionary = results["dataset"] as NSDictionary<br>        let metaData : NSDictionary  = dataSet["metadata"] as NSDictionary<br>        let metaDataItems : NSArray = metaData["item"] as NSArray<br>        let arrayItems : Array<NSDictionary> = metaDataItems as Array<NSDictionary><br>        for metaItem in arrayItems {<br>            var m1 = ModelMetaData()<br>            m1.strName = metaItem["@name"] as String<br>            m1.strType = metaItem["@type"] as String<br>            m1.strLength = metaItem["@length"] as String!<br>            m1.strPrecision = metaItem["@precision"] as String!<br>            metaDataInfo.append(m1)<br>        }<br>        let reportData: NSDictionary = dataSet["data"] as NSDictionary<br>        let reportDataRow: NSArray = reportData["row"] as NSArray<br>        let arrayValues : Array<NSDictionary> = reportDataRow as Array<NSDictionary><br>        for rowItem in arrayValues {<br>            var rd1 = ModelReportData(strReportData:rowItem["value"] as NSArray)<br>            reportDataInfo.append(rd1)<br>        }<br>        dispatch_async(dispatch_get_main_queue(), {<br>            //self.drawShinobiChart()<br>            self.drawTelerikChart()<br>            UIApplication.sharedApplication().networkActivityIndicatorVisible = false<br>        })<br>    }<br><br>  <br>    func drawTelerikChart() {<br>        chartView =  UIView(frame: CGRectMake(self.view.bounds.origin.x, self.view.bounds.origin.y, self.view.bounds.width, self.view.bounds.height))<br>        chart = TKChart(frame: CGRectInset(chartView.bounds, 15, 15))<br>        chart.autoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight<br>        chartView.addSubview(chart)<br><br>        let xAxis = TKChartAxis()<br>        xAxis.position = TKChartAxisPosition.Bottom<br>        chart.addAxis(xAxis)<br><br>        let yAxis1 = TKChartNumericAxis()<br>        yAxis1.majorTickInterval = 500_000<br>        yAxis1.position = TKChartAxisPosition.Left<br>        yAxis1.style.lineHidden = false<br>        chart.addAxis(yAxis1)<br><br><br>        var budgetData = [TKChartDataPoint]()<br>        for i in 0..<reportDataInfo.count {<br>            budgetData.append(TKChartDataPoint(x: reportDataInfo[i].strReportData[0], y: reportDataInfo[i].strReportData[1]))<br>        }<br><br>        let series = TKChartColumnSeries(items: budgetData)<br>        series.xAxis = xAxis<br>        series.yAxis = yAxis1<br>        chart.addSeries(series)<br>    }<br>}<br>

import UIKit

class VCReportData : UIViewController, APIReportDataControllerProtocol {
    var strReportName: String?
    let kReportFormat: String = "JSON"
    var metaDataInfo : [ModelMetaData] =  [ModelMetaData]()
    var reportDataInfo: [ModelReportData] = [ModelReportData]()
    var chartView: UIView!

    var api : APIReportDataController?

    @IBOutlet weak var labelReportName: UILabel!
    var chart = TKChart()

    required init(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        api = APIReportDataController(delegate : self)
        api?.getReportData(strReportName: strReportName!, strReportFormat: kReportFormat)
        labelReportName.text = strReportName!
     

    }

    func didReceiveAPIResults(results : NSDictionary) {
        var results : NSDictionary  = results
        let dataSet : NSDictionary = results["dataset"] as NSDictionary
        let metaData : NSDictionary  = dataSet["metadata"] as NSDictionary
        let metaDataItems : NSArray = metaData["item"] as NSArray
        let arrayItems : Array<NSDictionary> = metaDataItems as Array<NSDictionary>
        for metaItem in arrayItems {
            var m1 = ModelMetaData()
            m1.strName = metaItem["@name"] as String
            m1.strType = metaItem["@type"] as String
            m1.strLength = metaItem["@length"] as String!
            m1.strPrecision = metaItem["@precision"] as String!
            metaDataInfo.append(m1)
        }
        let reportData: NSDictionary = dataSet["data"] as NSDictionary
        let reportDataRow: NSArray = reportData["row"] as NSArray
        let arrayValues : Array<NSDictionary> = reportDataRow as Array<NSDictionary>
        for rowItem in arrayValues {
            var rd1 = ModelReportData(strReportData:rowItem["value"] as NSArray)
            reportDataInfo.append(rd1)
        }
        dispatch_async(dispatch_get_main_queue(), {
            //self.drawShinobiChart()
            self.drawTelerikChart()
            UIApplication.sharedApplication().networkActivityIndicatorVisible = false
        })
    }

 
    func drawTelerikChart() {
        chartView =  UIView(frame: CGRectMake(self.view.bounds.origin.x, self.view.bounds.origin.y, self.view.bounds.width, self.view.bounds.height))
        chart = TKChart(frame: CGRectInset(chartView.bounds, 15, 15))
        chart.autoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight
        chartView.addSubview(chart)

        let xAxis = TKChartAxis()
        xAxis.position = TKChartAxisPosition.Bottom
        chart.addAxis(xAxis)

        let yAxis1 = TKChartNumericAxis()
        yAxis1.majorTickInterval = 500_000
        yAxis1.position = TKChartAxisPosition.Left
        yAxis1.style.lineHidden = false
        chart.addAxis(yAxis1)


        var budgetData = [TKChartDataPoint]()
        for i in 0..<reportDataInfo.count {
            budgetData.append(TKChartDataPoint(x: reportDataInfo[i].strReportData[0], y: reportDataInfo[i].strReportData[1]))
        }

        let series = TKChartColumnSeries(items: budgetData)
        series.xAxis = xAxis
        series.yAxis = yAxis1
        chart.addSeries(series)
    }
}

[Adrian]

Hi Sreenivasa,

Thank you for using our controls.

TKChartAxis is a base class for all axes in TKChart and it should not be instantiated. You should use one of the predefined chart axes instead: TKChartNumericAxis, TKChartDateTimeAxis or TKChartCategoryAxis. TKChart can create its axes automatically after you add a series, based on your data. Here is how you can achieve the described scenario writing less code:

let yAxis1 = TKChartNumericAxis()
yAxis1.majorTickInterval = 500_000
yAxis1.style.lineHidden = false
chart.yAxis = yAxis1

var budgetData = [TKChartDataPoint]()
for i in 0..<reportDataInfo.count {
    budgetData.append(TKChartDataPoint(x: reportDataInfo[i].strReportData[0], y: reportDataInfo[i].strReportData[1]))
}

let series = TKChartColumnSeries(items: budgetData)
chart.addSeries(series)

You can read more about axes in TKChart in our documentation.

I hope this helps. Should you have further questions, do not hesitate to contact us.

Regards,
Adrian
Telerik