Fill color between two series in a LineGraphSeries of Graphview android

问题

I have created a line graph using GraphView demo.But I need to fill the areas only between the lines with a specific colour.
This is what I want to achieve:

Error band for a linegraphseries. or Fill colour between two series in a LineGraphSeries of Graphview.
Can anybody help?

来源：https://stackoverflow.com/questions/40858555/fill-color-between-two-series-in-a-linegraphseries-of-graphview-android