PieSeries setLabelValueToStringConverter not called

[Richard]

I am trying to figure out how to change the labels on my pie chart and there is no way to add a category binding to a pie chart so I tried overiding the setLabelValueToStringConverter() method but it is never called.

 

How do you change the label on a pie chart?

 

Rich

[Victor]

Hello Richard,

Thanks for reporting this.
This is a bug, the PieSeries currently ignore the converter. I have fixed this and the updated version will be available for download shortly.

At the moment you have to inherit from PieSeriesLabelRenderer. For example:

public class CustomLabelRenderer extends PieSeriesLabelRenderer {
    public CustomLabelRenderer(PieSeries owner) {
        super(owner);
    }
    @Override
    protected String getLabelText(DataPoint dataPoint) {
        PieDataPoint piePoint = (PieDataPoint)dataPoint;
        double pieValue = piePoint.getValue();
        // Create label text here
        return Double.toString(pieValue);
        // or return the result of the base implementation.
        // return super.getLabelText(dataPoint);
    }
}

Then you use it like this:

pieSeries.setLabelRenderer(new CustomLabelRenderer(pieSeries));

Please write again if you need further assistance.

Regards,
Victor
Telerik

[Takudzwa]

Hi, can i have the C# version of the above snippet for creating custom label renderer. I want to implement the same concept in Xamarin.Android

[Victor]

Hi Takudzwa,

Thanks for writing.
I answered your question in one of the other threads your posted.

Regards,
Victor
Telerik by Progress