private void OnComboBoxSelectionChanged(object sender, SelectionChangedEventArgs e)
{
ComboBox comboBox = sender as ComboBox;
if (comboBox.SelectedIndex == 1 && financialChart != null)
{
HiLoSeries hiLoSeries = new HiLoSeries();
hiLoSeries.XBindingPath = "Date";
hiLoSeries.High = "High";
hiLoSeries.Low = "Low";
hiLoSeries.ItemsSource = hiLowChart.StockPriceDetails;
hiLoSeries.VisibilityOnLegend = Visibility.Collapsed;
financialChart.PrimaryAxis.ZoomFactor = 1;
financialChart.PrimaryAxis.PlotOffset = 10;
financialChart.SecondaryAxis.ZoomFactor = 1;
financialChart.Series.Clear();
financialChart.Series.Add(hiLoSeries);
}
else if (comboBox.SelectedIndex == 0 && financialChart != null)
{
HiLoOpenCloseSeries hiLoOpenClose = new HiLoOpenCloseSeries();
hiLoOpenClose.XBindingPath = "Date";
hiLoOpenClose.High = "High";
hiLoOpenClose.Low = "Low";
hiLoOpenClose.Open = "Open";
hiLoOpenClose.Close = "Close";
hiLoOpenClose.ItemsSource = hiLowChart.StockPriceDetails;
hiLoOpenClose.VisibilityOnLegend = Visibility.Collapsed;
financialChart.Series.Clear();
financialChart.PrimaryAxis.ZoomFactor = 1;
financialChart.SecondaryAxis.ZoomFactor = 1;
financialChart.Series.Add(hiLoOpenClose);
}
else if (comboBox.SelectedIndex == 2 && financialChart != null)
{
CandleSeries chartSeries = new CandleSeries();
chartSeries.XBindingPath = "Date";
chartSeries.High = "High";
chartSeries.Low = "Low";
chartSeries.Open = "Open";
chartSeries.Close = "Close";
chartSeries.ItemsSource = hiLowChart.StockPriceDetails;
chartSeries.BearFillColor = new SolidColorBrush(Colors.Red);
chartSeries.BullFillColor = new SolidColorBrush(Colors.Green);
chartSeries.VisibilityOnLegend = Visibility.Collapsed;
financialChart.Series.Clear();
financialChart.PrimaryAxis.ZoomFactor = 1;
financialChart.SecondaryAxis.ZoomFactor = 1;
financialChart.Series.Add(chartSeries);
}
}
void ChartView_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
switch (selectedIndicator)
{
case "Accumulation Distribution":
{
HiLoOpenCloseSeries series = StockChart.Series[0] as HiLoOpenCloseSeries;
ColumnSeries series1 = StockChart.Series[1] as ColumnSeries;
AccumulationDistributionIndicator indicator = new AccumulationDistributionIndicator();
NumericalAxis axis1 = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
indicator.YAxis = axis1;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
if (StockChart.TechnicalIndicators.Count > 0)
{
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
}
StockChart.TechnicalIndicators.Add(indicator);
indicator = new AccumulationDistributionIndicator();
NumericalAxis axis = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
UI.Xaml.Charts.SfChart.SetRow(axis, 1);
indicator.YAxis = axis;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
StockChart.TechnicalIndicators.Add(indicator);
}
break;
case "Average True Range":
{
HiLoOpenCloseSeries series = StockChart.Series[0] as HiLoOpenCloseSeries;
ColumnSeries series1 = StockChart.Series[1] as ColumnSeries;
AverageTrueRangeIndicator indicator = new AverageTrueRangeIndicator();
NumericalAxis axis1 = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
indicator.YAxis = axis1;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
if (StockChart.TechnicalIndicators.Count > 0)
{
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
}
StockChart.TechnicalIndicators.Add(indicator);
indicator = new AverageTrueRangeIndicator();
NumericalAxis axis = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
UI.Xaml.Charts.SfChart.SetRow(axis, 1);
indicator.YAxis = axis;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
StockChart.TechnicalIndicators.Add(indicator);
}
break;
case "BollingerBand":
{
HiLoOpenCloseSeries series = StockChart.Series[0] as HiLoOpenCloseSeries;
ColumnSeries series1 = StockChart.Series[1] as ColumnSeries;
BollingerBandIndicator indicator = new BollingerBandIndicator();
NumericalAxis axis1 = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
indicator.YAxis = axis1;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
if (StockChart.TechnicalIndicators.Count > 0)
{
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
}
StockChart.TechnicalIndicators.Add(indicator);
indicator = new BollingerBandIndicator();
NumericalAxis axis = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
UI.Xaml.Charts.SfChart.SetRow(axis, 1);
indicator.YAxis = axis;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
StockChart.TechnicalIndicators.Add(indicator);
}
break;
case "Exponential Average":
{
HiLoOpenCloseSeries series = StockChart.Series[0] as HiLoOpenCloseSeries;
ColumnSeries series1 = StockChart.Series[1] as ColumnSeries;
ExponentialAverageIndicator indicator = new ExponentialAverageIndicator();
NumericalAxis axis1 = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
indicator.YAxis = axis1;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
if (StockChart.TechnicalIndicators.Count > 0)
{
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
}
StockChart.TechnicalIndicators.Add(indicator);
indicator = new ExponentialAverageIndicator();
NumericalAxis axis = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
UI.Xaml.Charts.SfChart.SetRow(axis, 1);
indicator.YAxis = axis;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
StockChart.TechnicalIndicators.Add(indicator);
}
break;
case "MACDTechnical":
{
HiLoOpenCloseSeries series = StockChart.Series[0] as HiLoOpenCloseSeries;
ColumnSeries series1 = StockChart.Series[1] as ColumnSeries;
MACDTechnicalIndicator indicator = new MACDTechnicalIndicator();
NumericalAxis axis1 = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
indicator.YAxis = axis1;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
if (StockChart.TechnicalIndicators.Count > 0)
{
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
}
StockChart.TechnicalIndicators.Add(indicator);
indicator = new MACDTechnicalIndicator();
NumericalAxis axis = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
UI.Xaml.Charts.SfChart.SetRow(axis, 1);
indicator.YAxis = axis;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
StockChart.TechnicalIndicators.Add(indicator);
}
break;
case "Momentum Technical":
{
HiLoOpenCloseSeries series = StockChart.Series[0] as HiLoOpenCloseSeries;
ColumnSeries series1 = StockChart.Series[1] as ColumnSeries;
MomentumTechnicalIndicator indicator = new MomentumTechnicalIndicator();
NumericalAxis axis1 = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
indicator.YAxis = axis1;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
if (StockChart.TechnicalIndicators.Count > 0)
{
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
}
StockChart.TechnicalIndicators.Add(indicator);
indicator = new MomentumTechnicalIndicator();
NumericalAxis axis = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
UI.Xaml.Charts.SfChart.SetRow(axis, 1);
indicator.YAxis = axis;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
StockChart.TechnicalIndicators.Add(indicator);
}
break;
case "RSITechnical":
{
HiLoOpenCloseSeries series = StockChart.Series[0] as HiLoOpenCloseSeries;
ColumnSeries series1 = StockChart.Series[1] as ColumnSeries;
RSITechnicalIndicator indicator = new RSITechnicalIndicator();
NumericalAxis axis1 = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
indicator.YAxis = axis1;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
if (StockChart.TechnicalIndicators.Count > 0)
{
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
}
StockChart.TechnicalIndicators.Add(indicator);
indicator = new RSITechnicalIndicator();
NumericalAxis axis = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
UI.Xaml.Charts.SfChart.SetRow(axis, 1);
indicator.YAxis = axis;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
StockChart.TechnicalIndicators.Add(indicator);
}
break;
case "Simple Average":
{
HiLoOpenCloseSeries series = StockChart.Series[0] as HiLoOpenCloseSeries;
ColumnSeries series1 = StockChart.Series[1] as ColumnSeries;
SimpleAverageIndicator indicator = new SimpleAverageIndicator();
NumericalAxis axis1 = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
indicator.YAxis = axis1;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
if (StockChart.TechnicalIndicators.Count > 0)
{
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
}
StockChart.TechnicalIndicators.Add(indicator);
indicator = new SimpleAverageIndicator();
NumericalAxis axis = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
UI.Xaml.Charts.SfChart.SetRow(axis, 1);
indicator.YAxis = axis;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
StockChart.TechnicalIndicators.Add(indicator);
}
break;
case "Triangular Average":
{
HiLoOpenCloseSeries series = StockChart.Series[0] as HiLoOpenCloseSeries;
ColumnSeries series1 = StockChart.Series[1] as ColumnSeries;
TriangularAverageIndicator indicator = new TriangularAverageIndicator();
NumericalAxis axis1 = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
indicator.YAxis = axis1;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
if (StockChart.TechnicalIndicators.Count > 0)
{
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
StockChart.TechnicalIndicators.Remove(StockChart.TechnicalIndicators[0]);
}
StockChart.TechnicalIndicators.Add(indicator);
indicator = new TriangularAverageIndicator();
NumericalAxis axis = new NumericalAxis()
{
Visibility = Visibility.Collapsed, ShowGridLines = false
};
UI.Xaml.Charts.SfChart.SetRow(axis, 1);
indicator.YAxis = axis;
indicator.ItemsSource = series.ItemsSource;
indicator.High = series.High;
indicator.Low = series.Low;
indicator.Open = series.Open;
indicator.Close = series.Close;
indicator.XBindingPath = series.XBindingPath;
indicator.Volume = series.Open;
StockChart.TechnicalIndicators.Add(indicator);
}
break;
}
}
public override View GetSampleContent(Context context)
{
chart = new SfChart(context);
chart.SetPadding(0, 10, 0, 0);
chart.Behaviors.Add(new ChartTrackballBehavior());
DateTimeAxis dateTimeAxis = new DateTimeAxis();
dateTimeAxis.LabelStyle.LabelFormat = "MM/yyyy";
chart.PrimaryAxis = dateTimeAxis;
NumericalAxis numericalAxis = new NumericalAxis();
chart.SecondaryAxis = numericalAxis;
HiLoOpenCloseSeries candleSeries = new HiLoOpenCloseSeries();
candleSeries.ItemsSource = MainPage.GetTechnicalIndicatorData();
candleSeries.XBindingPath = "XValue";
candleSeries.Open = "Open";
candleSeries.Close = "Close";
candleSeries.High = "High";
candleSeries.Low = "Low";
candleSeries.EnableAnimation = true;
candleSeries.Name = "Series";
chart.Series.Add(candleSeries);
SimpleMovingAverageIndicator sMA = new SimpleMovingAverageIndicator();
sMA.SeriesName = "Series";
sMA.XBindingPath = "XValue";
sMA.Open = "Open";
sMA.Close = "Close";
sMA.High = "High";
sMA.Low = "Low";
sMA.EnableAnimation = true;
chart.TechnicalIndicators.Add(sMA);
TextView labelDisplayMode = new TextView(context);
labelDisplayMode.TextSize = 20;
labelDisplayMode.Text = "Technical Indicator type";
Spinner selectLabelMode = new Spinner(context, SpinnerMode.Dialog);
adapter = new List <String>()
{
"Simple Moving Average Indicator", "Average True Indicator", "Exponential Moving Averge Indicator", "Momentum Indicator",
"Accumulation Distribution Indicator", "RSI Indicator", "Triangular Moving Average Indicator",
"MACD Indicator", "Stochastic Indicator", "Bollinger Band Indicator"
};
ArrayAdapter <String> dataAdapter = new ArrayAdapter <String>
(context, Android.Resource.Layout.SimpleSpinnerItem, adapter);
dataAdapter.SetDropDownViewResource(Android.Resource.Layout.SimpleDropDownItem1Line);
selectLabelMode.Adapter = dataAdapter;
selectLabelMode.ItemSelected += SelectLabelMode_ItemSelected;
LinearLayout linearLayout = new LinearLayout(context);
linearLayout.SetPadding(20, 0, 20, 30);
linearLayout.SetBackgroundColor(Color.Rgb(236, 235, 242));
linearLayout.LayoutParameters = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WrapContent,
LinearLayout.LayoutParams.WrapContent);
linearLayout.Orientation = Orientation.Vertical;
linearLayout.SetBackgroundColor(Color.White);
linearLayout.AddView(selectLabelMode);
linearLayout.AddView(chart);
return(linearLayout);
}
override protected void DrawPath(SeriesBase series, System.Drawing.Pen pen)
{
if (series is LineSeries || series is HiLoSeries || series is HiLoOpenCloseSeries)
{
var points = new PointCollection();
var lowPoints = new PointCollection();
var pointCount = 0;
PartsCollection partsCollection = new PartsCollection();
if (series is LineSeries)
{
LineSeries lineSeries = series as LineSeries;
points = lineSeries.LinePoints;
pointCount = lineSeries.LinePoints.Count;
partsCollection = lineSeries.Parts;
}
else if (series is HiLoSeries)
{
HiLoSeries lineSeries = series as HiLoSeries;
points = lineSeries.HighPoints;
lowPoints = lineSeries.LowPoints;
pointCount = lineSeries.HighPoints.Count;
partsCollection = lineSeries.Parts;
}
else if (series is HiLoOpenCloseSeries)
{
HiLoOpenCloseSeries lineSeries = series as HiLoOpenCloseSeries;
points = lineSeries.HighPoints;
lowPoints = lineSeries.LowPoints;
pointCount = lineSeries.HighPoints.Count;
partsCollection = lineSeries.Parts;
}
if (RenderingMode == RenderingMode.Default)
{
for (int i = 0; i < partsCollection.Count; i++)
{
UIElement renderElement = partsCollection[i].CreatePart();
if (renderElement != null && !PartsCanvas.Children.Contains(renderElement))
{
PartsCanvas.Children.Add(renderElement);
}
}
}
else
{
if (series is LineSeries)
{
for (int i = 0; i < pointCount - 1; i++)
{
switch (RenderingMode)
{
case RenderingMode.GDIRendering:
GDIGraphics.DrawLine(pen, points[i].AsDrawingPointF(), points[i + 1].AsDrawingPointF());
break;
case RenderingMode.Default:
break;
case RenderingMode.WritableBitmap:
this.WritableBitmap.Lock();
WritableBitmapGraphics.DrawLine(pen, points[i].AsDrawingPointF(), points[i + 1].AsDrawingPointF());
this.WritableBitmap.Unlock();
break;
default:
break;
}
}
}
else
{
for (int i = 0; i < pointCount; i++)
{
switch (RenderingMode)
{
case RenderingMode.GDIRendering:
GDIGraphics.DrawLine(pen, points[i].AsDrawingPointF(), lowPoints[i].AsDrawingPointF());
break;
case RenderingMode.Default:
break;
case RenderingMode.WritableBitmap:
this.WritableBitmap.Lock();
WritableBitmapGraphics.DrawLine(pen, points[i].AsDrawingPointF(), lowPoints[i].AsDrawingPointF());
this.WritableBitmap.Unlock();
break;
default:
break;
}
}
}
this.Collection.InvalidateBitmap();
}
}
}
