protected override void OnResume()
{
base.OnResume();
if (mChartView == null)
{
LinearLayout layout = FindViewById <LinearLayout>(Resource.Id.chart);
mChartView = ChartFactory.GetPieChartView(this, mSeries, mRenderer);
mRenderer.ClickEnabled = true;
mChartView.Click += (e, s) =>
{
SeriesSelection seriesSelection = mChartView.CurrentSeriesAndPoint;
if (seriesSelection == null)
{
Toast.MakeText(this, "No chart element selected", ToastLength.Short).Show();
}
else
{
for (int i = 0; i < mSeries.ItemCount; i++)
{
mRenderer.GetSeriesRendererAt(i).Highlighted = (i == seriesSelection.PointIndex);
}
mChartView.Repaint();
Toast.MakeText(this, "Chart data point index " + seriesSelection.PointIndex + " selected "
+ "point value=" + seriesSelection.Value, ToastLength.Short).Show();
}
};
layout.AddView(mChartView, new Android.Views.ViewGroup.LayoutParams(ViewGroup.LayoutParams.FillParent,
ViewGroup.LayoutParams.FillParent));
}
else
{
mChartView.Repaint();
}
}
/// <summary>
/// Executes the chart demo.
/// </summary>
/// <param name="context"> the context </param>
/// <returns> the built intent </returns>
public override Intent Execute(Context context)
{
double[] values = new double[] { 12, 14, 11, 10, 19 };
int[] colors = new int[] { Color.Blue, Color.Green, Color.Magenta, Color.Yellow, Color.Cyan };
DefaultRenderer renderer = BuildCategoryRenderer(colors);
renderer.ZoomButtonsVisible = true;
renderer.ZoomEnabled = true;
renderer.ChartTitleTextSize = 20;
renderer.DisplayValues = true;
renderer.ShowLabels = false;
SimpleSeriesRenderer r = renderer.GetSeriesRendererAt(0);
r.GradientEnabled = true;
r.SetGradientStart(0, Color.Blue);
r.SetGradientStop(0, Color.Green);
r.Highlighted = true;
Intent intent = ChartFactory.GetPieChartIntent(context, BuildCategoryDataset("Project budget", values), renderer, "Budget");
return(intent);
}