@Override
    public void setColumnChartData(ColumnChartData data) {
        if (BuildConfig.DEBUG) {
            Log.d(TAG, "Setting data for ColumnChartView");
        }

        if (null == data) {
            this.data = ColumnChartData.generateDummyData();
        } else {
            this.data = data;
        }

        super.onChartDataChange();

    }
ColumnChart/BarChart, supports subcolumns, stacked collumns and negative values.

@author Leszek Wach
hellocharts-library/src/lecho/lib/hellocharts/view/ColumnChartView.java