Android Piechart是空的

Question

如果aChartengine饼图为空，如何显示自定义TextView？我注意到你不能做ListView，你有什么建议吗？

我在LinearLayout中显示图表：

chartContainer = (LinearLayout)view.findViewById(R.id.chart_container);

// Getting PieChartView to add to the custom layout 
mChartView = ChartFactory.getPieChartView(getActivity(),distributionSeries, defaultRenderer); 
// Adding the pie chart to the custom layout 
chartContainer.addView(mChartView);