LegendModifier callback function available for check and uncheck the series

There is no LegendModifier CheckedChanged callback for SciChart Android, however legendmodifier checkbox is bound to series visibility, so you can get the same callback by listening to series visibility changes.

Check out RenderableSeries.addIsVisibleChangedListener().

This method allows you to attach a listener to a series which will be called when its visibility changes. This can occur when the setIsVisible() method is called. See the RenderableSeriesChangeListener interface for more details.

Best regards,
Andrew