achartengine折线图 分段颜色

String[] titles = new String[] { "Crete", "Corfu"};
List<double[]> x = new ArrayList<double[]>();
x.add(new double[] { 1, 2, 3, 4, 5, 6, 7, 8, 9,10 });
x.add(new double[] {10, 11, 12 });

List<double[]> values = new ArrayList<double[]>();

values.add(new double[] { 12.3, 12.5, 13.8, 16.8, 20.4, 24.4, 26.4, 26.1, 23.6 ,18 });
values.add(new double[] { 18, 14, 11 });


/* values.add(new double[] { 12.3, 12.5, 13.8, 16.8, 20.4, 24.4, 26.4, 26.1, 23.6});
values.add(new double[] { 20.3, 17.2,
13.9 });*/

// values.add(new double[] { 12.3, 12.5, 13.8, 16.8, 20.4, 24.4, 26.4, 26.1, 23.6, 18, 14, 11 });
// values.add(new double[] { 10, 10, 12, 15, 20, 24, 26, 26, 23, 18, 14, 11 });
/*
values.add(new double[] { 5, 5.3, 8, 12, 17, 22, 24.2, 24, 19, 15, 9, 6 });
values.add(new double[] { 9, 10, 11, 15, 19, 23, 26, 25, 22, 18, 13, 10 });*/
int[] colors = new int[] { Color.BLUE, Color.GREEN };
PointStyle[] styles = new PointStyle[] { PointStyle.CIRCLE, PointStyle.DIAMOND
};
// PointStyle.TRIANGLE, PointStyle.SQUARE
XYMultipleSeriesRenderer renderer = buildRenderer(colors, styles);
int length = renderer.getSeriesRendererCount();
for (int i = 0; i < length; i++) {
((XYSeriesRenderer) renderer.getSeriesRendererAt(i)).setFillPoints(true);
}
setChartSettings(renderer, "Average temperature", "Month", "Temperature", 0.5, 12.5, -10, 40,
Color.LTGRAY, Color.LTGRAY);
renderer.setXLabels(12);
renderer.setYLabels(10);
renderer.setShowGrid(true);
renderer.setXLabelsAlign(Align.RIGHT);
renderer.setYLabelsAlign(Align.RIGHT);
renderer.setZoomButtonsVisible(true);
renderer.setPanLimits(new double[] { -10, 20, -10, 40 });
renderer.setZoomLimits(new double[] { -10, 20, -10, 40 });

XYMultipleSeriesDataset dataset = buildDataset(titles, x, values);
XYSeries series = dataset.getSeriesAt(0);
series.addAnnotation("Vacation", 6, 30);
Intent intent = ChartFactory.getLineChartIntent(context, dataset, renderer,
"Average temperature");
return intent;