String[] legendLabels= { "Bugs" };
Paint[] paints= new Paint[]{ Color.blue.darker() };
BarChartProperties barChartProperties= new BarChartProperties();
//---paints over the background of every other bar area.
BackgroundRenderer backgroundRenderer = new BackgroundRenderer( new Color( 20, 20, 20, 50 ) );
barChartProperties.addPreRenderEventListener( backgroundRenderer );
AxisChartDataSet axisChartDataSet= new AxisChartDataSet( data, legendLabels, paints, ChartType.BAR, barChartProperties );
dataSeries.addIAxisPlotDataSet( axisChartDataSet );