aChartEngine

平方X

创建方法
① public static final GraphicalView getBarChartView(Context context,
      XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, Type type)
②dataset
        XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
XYMultipleSeriesDataset.addSeries(XYSeries series)
③renderer
        XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer();
addSeriesRenderer(SimpleSeriesRenderer renderer)
④type不知道呢

平方X

        //Dataset and renderer should be not null and should have the same number of series