在Flutter / Dart中创建2D数组 [英] Creating a 2d array in flutter / dart

问题描述

我是扑扑和飞镖的新手。我已经搜索过Google，而我所能找到的就是如何快速建立一维列表。我需要一个值图表。

I'm brand new to flutter and dart. I've searched google and all I can find is how to make 1d lists in flutter. I need a chart of values.

特别是我需要一行12长，一列31长，并用升序填充

Specifically I need a row 12 long and a column 31 long filled with ascending numbers

1,  32,  63,

2,  33,  64, 

3,  34,  65,  etc....

谢谢！

推荐答案

int row = 3;
int col = 4;

var twoDList = List.generate(row, (i) => List(col), growable: false);

//For fill;
twoDList[0][1] = "deneme";

print(twoDList);

// [[null, deneme, null, null], [null, null, null, null], [null, null, null, null]]

您的二维列表具有3行4列。

Your 2D list having 3 rows and 4 columns.

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