BarChartData GenerateBarData()
{
List <BarChartDataEntry> greenEntries = new List <BarChartDataEntry>();
List <BarChartDataEntry> blueEntries = new List <BarChartDataEntry>();
List <BarChartDataEntry> yellowEntries = new List <BarChartDataEntry>();
List <BarChartDataEntry> orangeEntries = new List <BarChartDataEntry>();
List <BarChartDataEntry> redEntries = new List <BarChartDataEntry>();
//Green
greenEntries.Add(new BarChartDataEntry(0, 8f));
greenEntries.Add(new BarChartDataEntry(1, 3));
greenEntries.Add(new BarChartDataEntry(2, 1));
greenEntries.Add(new BarChartDataEntry(3, -1));
BarChartDataSet set1 = new BarChartDataSet(greenEntries.ToArray(), string.Empty);
set1.DrawValuesEnabled = false;
set1.SetColor(UIColor.Green);
set1.ValueTextColor = UIColor.White;
set1.ValueFont = UIFont.SystemFontOfSize(15);
//Blue
blueEntries.Add(new BarChartDataEntry(3, -1f));
blueEntries.Add(new BarChartDataEntry(4, -7f));
blueEntries.Add(new BarChartDataEntry(5, -2f));
blueEntries.Add(new BarChartDataEntry(6, -3f));
blueEntries.Add(new BarChartDataEntry(7, -4f));
BarChartDataSet set2 = new BarChartDataSet(blueEntries.ToArray(), string.Empty);
set2.DrawValuesEnabled = false;
set2.SetColor(UIColor.Red);
set2.ValueTextColor = UIColor.White;
set2.ValueFont = UIFont.SystemFontOfSize(15);
//Yellow
List <IInterfaceChartDataSet> dataSets = new List <IInterfaceChartDataSet>();
dataSets.Add(set1);
dataSets.Add(set2);
BarChartData barData = new BarChartData(dataSets.ToArray());
barData.BarWidth = 0.7f;
return(barData);
}
private void InitializeChart()
{
if (supportChart != null && supportChart.ChartData != null && chartOriginal != null)
{
SupportChart.OnInitializeChart(supportChart, chartOriginal);
var data = supportChart.ChartData;
var dataSetItems = new List <BarChartDataSet>();
foreach (var itemChild in data.IF_GetDataSet())
{
var entryOriginal = itemChild.IF_GetEntry().Select(item => new iOSCharts.BarChartDataEntry(item.GetXPosition(), item.GetYPosition()));
BarChartDataSet lineDataSet = new BarChartDataSet(entryOriginal.ToArray(), itemChild.IF_GetTitle());
lineDataSet.SetColor(itemChild.IF_GetDataColor().ToUIColor());
lineDataSet.DrawValuesEnabled = (itemChild.IF_GetDrawValue());
dataSetItems.Add(lineDataSet);
}
BarChartData lineData = new BarChartData(dataSetItems.ToArray());
chartOriginal.Data = lineData;
}
}
public override UICollectionViewCell GetCell(UICollectionView collectionView, NSIndexPath indexPath)
{
var resultCell = collectionView.DequeueReusableCell(ResultViewController.resultCellId, indexPath) as ResultCollectionViewCell;
resultCell.BackgroundColor = UIColor.White;
var reportDataSet = this.reportsDatasets[indexPath.Row];
if (ReportType.Overall.Equals(reports[indexPath.Row]))
{
resultCell.sectionLabel.Text = reports[indexPath.Row].ToString();
if (reportDataSet.totalVotes > 0)
{
var dataEntries = new List <PieChartDataEntry>();
for (int i = 0; i < reportDataSet.dataSets[0].Count; i++)
{
if (Convert.ToInt32(reportDataSet.dataSets[0][i]) > 0)
{
dataEntries.Add(new PieChartDataEntry(reportDataSet.dataSets[0][i], reportDataSet.labels[i]));
}
}
var dataSet = new PieChartDataSet(dataEntries.ToArray(), "");
dataSet.ValueFormatter = new ChartDefaultValueFormatter(new NSNumberFormatter()
{
MinimumFractionDigits = 0
});
dataSet.SliceSpace = 2;
//dataSet.Colors = ChartColorTemplates.Joyful;
dataSet.Colors = this.chartColors.ToArray();
dataSet.ValueTextColor = UIColor.FromRGB(90, 89, 89);
dataSet.ValueLineColor = UIColor.FromRGB(90, 89, 89);
dataSet.EntryLabelColor = UIColor.FromRGB(90, 89, 89);
dataSet.XValuePosition = PieChartValuePosition.OutsideSlice;
dataSet.YValuePosition = PieChartValuePosition.OutsideSlice;
resultCell.pieChartView.Data = new PieChartData(new PieChartDataSet[] { dataSet });
}
resultCell.pieChartView.AnimateWithXAxisDuration(1.4, ChartEasingOption.EaseOutBack);
resultCell.pieChartView.ChartDescription.Text = "";
var colorAttributes = new UIStringAttributes
{
ForegroundColor = UIColor.FromRGB(90, 89, 89)
};
resultCell.pieChartView.CenterAttributedText = new NSAttributedString(string.Format("Total {0} votes", reportDataSet.totalVotes, colorAttributes));
resultCell.pieChartView.Legend.Enabled = false;
resultCell.pieChartView.NoDataText = "No results to show";
resultCell.AddSubview(resultCell.pieChartView);
resultCell.AddConstraints(NSLayoutConstraint.FromVisualFormat("H:|[v0]|", new NSLayoutFormatOptions(), "v0", resultCell.pieChartView));
resultCell.AddConstraints(NSLayoutConstraint.FromVisualFormat("V:|[v0(24)][v1]|", new NSLayoutFormatOptions(), "v0", resultCell.sectionLabel, "v1", resultCell.pieChartView));
}
else
{
resultCell.sectionLabel.Text = "By " + reports[indexPath.Row].ToString();
resultCell.barChartView.Legend.Enabled = true;
resultCell.barChartView.Legend.HorizontalAlignment = ChartLegendHorizontalAlignment.Right;
resultCell.barChartView.Legend.VerticalAlignment = ChartLegendVerticalAlignment.Top;
resultCell.barChartView.Legend.Orientation = ChartLegendOrientation.Vertical;
resultCell.barChartView.Legend.DrawInside = true;
resultCell.barChartView.Legend.YOffset = 10.0f;
resultCell.barChartView.Legend.XOffset = 10.0f;
resultCell.barChartView.Legend.YEntrySpace = 0.0f;
resultCell.barChartView.Legend.TextColor = UIColor.FromRGB(90, 89, 89);
resultCell.barChartView.XAxis.DrawGridLinesEnabled = true;
resultCell.barChartView.XAxis.LabelPosition = XAxisLabelPosition.Bottom;
resultCell.barChartView.XAxis.CenterAxisLabelsEnabled = true;
resultCell.barChartView.XAxis.ValueFormatter = new ChartIndexAxisValueFormatter(TranslateReportGroups(reportDataSet.groups.ToArray()));
resultCell.barChartView.XAxis.Granularity = 1;
resultCell.barChartView.XAxis.LabelTextColor = UIColor.FromRGB(90, 89, 89);
resultCell.barChartView.XAxis.GridColor = UIColor.FromRGB(90, 89, 89);
resultCell.barChartView.XAxis.AxisLineColor = UIColor.FromRGB(90, 89, 89);
resultCell.barChartView.LeftAxis.SpaceTop = 0.35f;
resultCell.barChartView.LeftAxis.AxisMinimum = 0;
resultCell.barChartView.LeftAxis.DrawGridLinesEnabled = false;
resultCell.barChartView.LeftAxis.Granularity = 1;
resultCell.barChartView.LeftAxis.ValueFormatter = new ChartDefaultAxisValueFormatter(new NSNumberFormatter()
{
MinimumFractionDigits = 0
});
resultCell.barChartView.LeftAxis.LabelTextColor = UIColor.FromRGB(90, 89, 89);
resultCell.barChartView.LeftAxis.GridColor = UIColor.FromRGB(90, 89, 89);
resultCell.barChartView.LeftAxis.AxisLineColor = UIColor.FromRGB(90, 89, 89);
resultCell.barChartView.LeftAxis.ZeroLineColor = UIColor.FromRGB(90, 89, 89);
resultCell.barChartView.RightAxis.Enabled = false;
if (reportDataSet.totalVotes > 0)
{
var groupCount = reportDataSet.groups.Count;
var optionsCount = reportDataSet.labels.Count;
var dataEntriesList = new List <List <BarChartDataEntry> >();
for (int i = 0; i < optionsCount; i++)
{
var dataEntries = new List <BarChartDataEntry>();
for (int j = 0; j < groupCount; j++)
{
if (Convert.ToInt32(reportDataSet.dataSets[i][j]) > 0)
{
dataEntries.Add(new BarChartDataEntry(i, reportDataSet.dataSets[i][j]));
}
}
dataEntriesList.Add(dataEntries);
}
var chartDataSetList = new List <BarChartDataSet>();
var k = 0;
for (int i = 0; i < dataEntriesList.Count; i++)
{
var barChartDataSet = new BarChartDataSet(dataEntriesList[i].ToArray(), reportDataSet.labels[i]);
if (dataEntriesList[i].ToArray().Length > 0)
{
barChartDataSet.SetColor(this.chartColors[k++]);
}
else
{
barChartDataSet.SetColor(UIColor.Clear);
}
barChartDataSet.ValueFormatter = new ChartDefaultValueFormatter(new NSNumberFormatter()
{
MinimumFractionDigits = 0, ZeroSymbol = ""
});
barChartDataSet.ValueTextColor = UIColor.FromRGB(90, 89, 89);
barChartDataSet.BarBorderColor = UIColor.FromRGB(90, 89, 89);
chartDataSetList.Add(barChartDataSet);
}
var dataSets = chartDataSetList.ToArray();
var chartData = new BarChartData(dataSets);
var initialXValue = 0;
var groupSpace = 0.3;
var barSpace = 0.05;
var barWidth = (0.7 - (0.05 * optionsCount)) / optionsCount; // (barWidth + 0.05) * optionsCount + 0.3 = 1.00 -> interval per "group"
chartData.BarWidth = barWidth;
resultCell.barChartView.XAxis.AxisMinimum = initialXValue;
resultCell.barChartView.XAxis.AxisMaximum = initialXValue + chartData.GroupWidthWithGroupSpace(groupSpace, barSpace) * groupCount;
chartData.GroupBarsFromX(initialXValue, groupSpace, barSpace);
resultCell.barChartView.Data = chartData;
}
resultCell.barChartView.AnimateWithXAxisDuration(1.4, ChartEasingOption.Linear);
resultCell.barChartView.ChartDescription.Text = "";
resultCell.barChartView.NoDataText = "No results to show";
resultCell.AddSubview(resultCell.barChartView);
resultCell.AddConstraints(NSLayoutConstraint.FromVisualFormat("H:|[v0]|", new NSLayoutFormatOptions(), "v0", resultCell.barChartView));
resultCell.AddConstraints(NSLayoutConstraint.FromVisualFormat("V:|[v0(24)][v1]|", new NSLayoutFormatOptions(), "v0", resultCell.sectionLabel, "v1", resultCell.barChartView));
}
return(resultCell);
}