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Einfach Port IOS-Charts v2.2.3.0 von Xamarin Nuget Paket-Manager.xamarin.ios ios-chart BarChartDataSet
public void BarChart(BarChartModel _barChartModel, BarChartView _barChartView, string _fromView, bool animateChart)
{
try {
barChartModel = _barChartModel;
barChartView = _barChartView;
barChartView.SetDrawBarShadowEnabled (false);
barChartView.SetMaxVisibleValueCount (15);
barChartView.SetPinchZoomEnabled (true);
barChartView.SetDrawGridBackgroundEnabled (false);
barChartView.ScaleYEnabled = false;
// Chart axis' layout configurations
ChartXAxis xAxis = barChartView.XAxis;
xAxis.SetLabelPosition (XAxisLabelPosition.Bottom);
xAxis.SetDrawGridLinesEnabled (false);
xAxis.SetLabelTextColor (chartTextColor);
xAxis.SpaceBetweenLabels = 2;
xAxis.SetAvoidFirstLastClippingEnabled (true);
xAxis.SetLabelWidth (30f);
ChartYAxis leftAxis = barChartView.LeftAxis;
leftAxis.SetLabelCount (10, false);
leftAxis.SetLabelPosition (YAxisLabelPosition.OutsideChart);
leftAxis.SpaceTop = 10f;
leftAxis.SetLabelTextColor (chartTextColor);
leftAxis.ValueFormatter = new NSNumberFormatter();
ChartYAxis rightAxis = barChartView.RightAxis;
rightAxis.SetDrawGridLinesEnabled (false);
rightAxis.SetDrawLabelsEnabled (false);
ChartLegend legend = barChartView.Legend;
legend.SetPosition (ChartLegendPosition.BelowChartCenter);
legend.SetForm (ChartLegendForm.Square);
legend.FormSize = 9f;
legend.SetFormToTextSpace (11f);
legend.XEntrySpace = 15f;
legend.TextColor = chartTextColor;
// X Axis
// -- directly get from dataModel.xAxis;
NSObject[] truncatedXAxis = new NSObject[barChartModel.xAxis.Count];
for (int t = 0; t < barChartModel.xAxis.Count; t++) {
if (barChartModel.xAxis [t].Length > 13)
truncatedXAxis [t] = NSObject.FromObject (barChartModel.xAxis [t].Substring (0, 11) + "..");
else
truncatedXAxis [t] = NSObject.FromObject (barChartModel.xAxis [t]);
}
// Y Axis
BarChartDataSet[] yDataSets = new BarChartDataSet[barChartModel.yAxis.Count];
for (int i = 0; i < barChartModel.yAxis.Count; i++) {
ChartDataEntry[] barEntry = new ChartDataEntry[barChartModel.yAxis [i].Count];
//List<ChartDataEntry> dataEntryList = new List<ChartDataEntry>();
for (int j = 0; j < barChartModel.yAxis [i].Count; j++) {
barEntry[j] = new ChartDataEntry((float)barChartModel.yAxis [i] [j], j);
//dataEntryList.Add(new ChartDataEntry((float)barChartModel.yAxis [i] [j], j));
}
//BarChartDataSet yDataSet = new BarChartDataSet (dataEntryList.ToArray(), barChartModel.dataSetLegend [i].ToString());
// Crashes HERE V
BarChartDataSet yDataSet = new BarChartDataSet (barEntry, barChartModel.dataSetLegend [i].ToString());
yDataSet.SetColor(chartColors [i]);
yDataSets[i] = yDataSet;
}
// Combine xAxis & yAxis
BarChartData data = new BarChartData (truncatedXAxis, yDataSets);
data.SetValueTextColor (chartTextColor);
data.SetHighlightEnabled (false); // Disable highlight selection
barChartView.SetData(data);
barChartView.SetNoDataTextDescription ("");
barChartView.SetDescriptionText (""); // Disable description - barChartData.SetDescription (String.IsNullOrEmpty (dataModel.name) ? "" : dataModel.name);
barChartView.SetNoDataText (""); // Text displayed when no data is given ("You need to provide data for the chart.");
if (animateChart)
barChartView.AnimateWithYAxisDuration (800);
} catch (Exception ex) {
LogHelper.Debug ("iOSChartHelper", ex.Message, ex);
}
}
Die Linie unterhalb dieser Kommentar // Crashes HERE V ist, wo aus mit Absturz mit folgenden Fehlermeldung throw verbindlichen Rahmen.
fatal error: NSArray element failed to match the Swift Array Element type
versucht haben, ändert sich die BarchartDataSet auf andere Variable aber kein Glück. Hat jemand Beispielcode oder eine Lösung zu diesem Problem?