路由错误显示缺少一个参数？ [英] Routing error shows missing one argument?

问题描述

这是我转到下一页的方式，

This is how i am routing to next page ,

   '/ot1': (context) => CustomListView(),

，并且在TAP上运行良好

and it was working fine onTAP

onTap: (){
                  Navigator.pushNamed(context, '/ot1');
                },

但是当我在 Class CustomListView 并通过传递的字段，我收到此错误，此行中缺少一个参数'/ ot1'：（context）=> CustomListView（），

but when i created constructor in class CustomListView and passed field i got this error that one argument is missing in this line '/ot1': (context) => CustomListView(),

这是我下面的类CustomListView 共享的代码

this is the code of my class CustomListView share below

class CustomListView extends StatelessWidget {
  final List<Spacecraft> spacecrafts;
  CustomListView(this.spacecrafts);

  Widget build(context) {
    return ListView.builder(
      itemCount: spacecrafts.length,
      itemBuilder: (context, int currentIndex) {
        return createViewItem(spacecrafts[currentIndex], context);
      },
    );
  }

我已经搜索了很多东西，却没有找到新的解决方案编程和FLUTTER语言，请帮助

I have searched for it for so much and didn't find a solution new to programming and FLUTTER language please HELP

推荐答案

尝试添加方括号[this.spacecrafts]，以使spacecraft参数成为可选参数

Try adding square brackets [this.spacecrafts] so that the spacecraft argument becomes an optional argument.

class CustomListView extends StatelessWidget {
final List<Spacecraft> spacecrafts;
CustomListView([this.spacecrafts]); # <- this is where you use the brackets
...

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