股票行情分时图绘制，flutter折线图

调用方法：

Container(
              height: 200,
              width: MediaQuery
                  .of(context)
                  .size
                  .width * 0.9 * (8 / 12),

              child: new Sparkline(
                data: lineValuesList,
                allLength: lineCount,
                fillMode: FillMode.below,
                fillColor: Colors.grey,
                lineColor: Colors.deepOrangeAccent,
                lineWidth: 1.0,
                yMax: yMax,
                yMin: yMin,
              )
          )

代码地址https://github.com/sky1990/flutter_sparkline