Object reference not set to an instance of an object
报错信息
NullReferenceException: Object reference not set to an instance of an object TileManage.Start () (at Assets/Scriput/TileManage.cs:65)
原因
List<Goods>
goodsList;
//定义goods的数据类型
public struct Goods
{
public int goods_id;
public int grid_x;
public int grid_y;
}
Goods goods1, goods2, goods3;
List<Goods> goodsList;
private void Start()
{
goods1 = new Goods();
goods1.goods_id = 0;
goods1.grid_x = 2;
goods1.grid_y = 2;
goods2 = new Goods();
goods2.goods_id = 1;
goods2.grid_x = 2;
goods2.grid_y = 2;
goods3 = new Goods();
goods3.goods_id = 2;
goods3.grid_x = 1;
goods3.grid_y = 1;
goodsList.Add(goods1);
goodsList.Add(goods2);
goodsList.Add(goods3);
print(goodsList);
}
解决方法
List<Goods> goodsList;
改为
List<Goods> goodsList = new List<Goods>();