Annotation in stacked bar chart -achartengine

Question

1. I m willing to draw a aChartEngine Stacked bar chart and everthing works fine but the annotation below in bar[green color] is ligter and is not represented properly..i need custom label in middlt of the bar so used annotations
2. when i make lable color as white it is not shown also since background is white , how to make textlable formating of annotations in achartengine?
3. Anyidea how to add textview at x y position in achrtengine?

Answer 1

For annotations properties .

 XYSeriesRenderer r = new XYSeriesRenderer();

 r.setAnnotationsColor(Color.RED);
 r.setAnnotationsTextSize(20);