如何访问刚刚单击的小部件或按钮的文本?

How to access the widget or the text of the button that was just clicked?

我想将被点击的按钮添加到列表中,但我不知道如何访问被点击的按钮本身。

这是我的current list of Buttons。 通过以下方式创建:

for (var stand in stands) StandCreation(stand)

这是我要填写的列表:

List<String||Widget> SelectedStandList = []

这就是我创建每个 'Button':

import 'package:flutter/material.dart';
class StandCreation extends StatelessWidget {
  final String stand;
  StandCreation(this.stand);

  @override
  Widget build(BuildContext context) {
    return InkWell(
      onTap: () {}, // Here i would like to do something like SelectedStandList.add(tappedInkWell)
      child: Container(
        width: double.infinity,
        margin: const EdgeInsets.only(
          top: 5,
          bottom: 5,
        ),
        padding: const EdgeInsets.all(3.0),
        color: Colors.blue,
        child: Text(
          stand,
          textAlign: TextAlign.center,
          style: TextStyle(
            color: Colors.white,
            fontSize: 23,
            fontWeight: FontWeight.bold,
          ),
        ),
      ),
    );
  }
}

然后我想使用列表创建一个仅包含所选项目的新屏幕。 感谢任何帮助!

使用 ListView.builder 而不是 For 循环。将您的 StandCreation 更改为:

final VoidCallback onPressed;
StandCreation({this.stand, this.onPressed});

并将 onTap 更改为:

onTap: onPressed

最后将您的 For 循环更改为:

ListView.builder(
  itemCount: 6, // how many buttons you want
  itemBuilder: (context, index) {
    return StandCreation(stand: stand,
       onPressed:(){
            // Here is your onclick, do whatever you want with it  
        }
    )
   },
)

如果您希望每个 onPressed 函数都有不同的操作,那么您可以简单地在其中放置一个 If 语句:

   onPressed:(){
        if(index==0) //do something with first button
    }