private void initLabelChat(View rootView) {

        NumberFormat nf = new DecimalFormat("#.# 小时");

        final DefaultRenderer renderer = new DefaultRenderer();

        final CategorySeries series = new CategorySeries("");

        LinearLayout layout = (LinearLayout) rootView

                .findViewById(R.id.pie_statistic_by_label);

        final GraphicalView chartView = ChartFactory.getPieChartView(

                getActivity(), series, renderer);

        chartView.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                SeriesSelection seriesSelection = chartView

                        .getCurrentSeriesAndPoint();

                if (seriesSelection == null) {

                    /*

                     * Toast.makeText(getActivity(),

                     * "No chart element selected", Toast.LENGTH_SHORT) .show();

                     */

                } else {

                    for (int i = 0; i < series.getItemCount(); i++) {

                        renderer.getSeriesRendererAt(i).setHighlighted(

                                i == seriesSelection.getPointIndex());

                    }

                    chartView.repaint();

                }

            }

        });

        renderer.setClickEnabled(true);

        renderer.setPanEnabled(false);

        renderer.setDisplayValues(false);

        layout.addView(chartView, new LayoutParams(700, 700));

        renderer.setZoomButtonsVisible(false);

        renderer.setZoomEnabled(false);

        renderer.setDisplayValues(true);

        renderer.setShowLegend(false);

        renderer.setLabelsTextSize(30f);

        renderer.setLabelsColor(Color.DKGRAY);

        renderer.setShowGrid(true);

        renderer.setAntialiasing(true);

        series.add("样本1", 5);

        SimpleSeriesRenderer seriesRenderer = new SimpleSeriesRenderer();

        seriesRenderer.setGradientEnabled(true);

        seriesRenderer.setChartValuesFormat(nf);

        seriesRenderer.setGradientStart(0, Color.rgb(0x04, 0xa3, 0xff));

        seriesRenderer.setGradientStop(0.8, Color.rgb(0x00, 0x89, 0xd8));

        seriesRenderer.setDisplayChartValues(false);

        renderer.addSeriesRenderer(seriesRenderer);

        series.add("样本2", 8);

        seriesRenderer = new SimpleSeriesRenderer();

        seriesRenderer.setGradientEnabled(true);

        seriesRenderer.setChartValuesFormat(nf);

        seriesRenderer.setGradientStart(0, Color.rgb(0xff, 0xb0, 0x0d));

        seriesRenderer.setGradientStop(0.8, Color.rgb(0xce, 0x97, 0x00));

        seriesRenderer.setDisplayChartValues(false);

        renderer.addSeriesRenderer(seriesRenderer);

        series.add("样本3", 6);

        seriesRenderer = new SimpleSeriesRenderer();

        seriesRenderer.setGradientEnabled(true);

        seriesRenderer.setChartValuesFormat(nf);

        seriesRenderer.setGradientStart(0, Color.rgb(0x00, 0xbc, 0x66));

        seriesRenderer.setGradientStop(0.8, Color.rgb(0x01, 0x80, 0x46));

        seriesRenderer.setDisplayChartValues(false);

        renderer.addSeriesRenderer(seriesRenderer);

        series.add("样本4", 3);

        seriesRenderer = new SimpleSeriesRenderer();

        seriesRenderer.setGradientEnabled(true);

        seriesRenderer.setChartValuesFormat(nf);

        seriesRenderer.setGradientStart(0, Color.rgb(0xff, 0x6e, 0xf6));

        seriesRenderer.setGradientStop(0.8, Color.rgb(0xff, 0x00, 0xde));

        seriesRenderer.setDisplayChartValues(false);

        renderer.addSeriesRenderer(seriesRenderer);

        chartView.repaint();

    }