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dart - 如何在 Flutter 中将 PointMode 传递给 Canvas.drawPoints(..)?

我正在如下调用函数drawPoints,它遵循API-docfinalpaint=newPaint()..color=Colors.blue[400]..strokeCap=StrokeCap.round;varoffsetList=[newOffset(2.0,5.0),newOffset(50.0,100.0)];canvas.drawPoints(constPointMode(1),offsetList,paint);当我将constPointMode(1)传入canvas.drawPoints时,它会抛出编译器错误。将PointMode传递给此函数的正确方法是什么?