Android - achartengine annotation rotation

Question

How to rotate annotations on bar chart 90 degrees? I want to set annotations with horizantal BarChart from left to right opposed to top-down.

The numbers are chartvalues but I want to rotate annotations "annot", "test" added by AddAnnotation(annotation,x,y) method.

Answer 1

For this you have edit library code.

Change in BarChart.java in method drawChartValuesText() .

Make 0 to 90.

 if (value >= 0) {
          drawText(canvas, getLabel(renderer.getChartValuesFormat(), value), x, points.get(i + 1)
              - renderer.getChartValuesSpacing(), paint, 90);
        } else {
          drawText(canvas, getLabel(renderer.getChartValuesFormat(), value), x, points.get(i + 1)
              + renderer.getChartValuesTextSize() + renderer.getChartValuesSpacing() - 3, paint, 90);
        }

For Annotation change this in draw() of XYChart.java

drawString(canvas, series.getAnnotationAt(j), xS, yS, paint);

to

 drawText(canvas, series.getAnnotationAt(j), xS, yS, paint,90);