如何在ListView中的flutter中创建一行可滚动的文本框或小部件？

Question

1.请允许有人告诉我如何创建一行文本框,这些文本框可以在ListView内向左或向右滚动.我可以看到我试图在有限宽度Li​​stView中定义无限宽度.但是,无法弄清楚这个的任何解决方法.

如果只是在customscrollview中注释scrolldirection属性(即,将scrolldirection更改为vertical),下面提到的代码就可以正常工作.但是,我正在寻找一个横向滚动.我试图解决这个问题,但没有运气.

有人可以帮忙,让我知道我做错了什么.

2. 另外,我们如何创建或夸大布局,就像我们在Android中一样？我已经包含了我正在创建的布局截图供参考:

我已经发布了下面的代码来重现相同的错误;

此致,Mahi

  import 'package:flutter/material.dart';
  import 'package:flutter/rendering.dart';
   import 'package:flutter/widgets.dart';
       void main(){
       runApp(new AddNewBlock());
       }

 class AddNewBlock extends StatefulWidget{

@override
State<StatefulWidget> createState() {
return new _AddNewBlockState();
    }
  }

   class _AddNewBlockState extends State<AddNewBlock>{


    @override
   Widget build(BuildContext context) {
   return new MaterialApp(
            title: 'Add New Block',
  debugShowCheckedModeBanner: false,

  home: new Scaffold(

    body: new ListView(
      shrinkWrap: true,

      children: <Widget>[
        new Container(
          margin: const EdgeInsets.only(
            left: 16.0,top: 24.0, bottom: 8.0,
          ),
          child: new Text(
            'Add New Block',
          style: new TextStyle(
            fontSize: 18.0,
            fontWeight: FontWeight.bold,
            color: Colors.teal[300],
    ),
          ),
        ),
        new Container(
          margin: const EdgeInsets.only(left: 16.0, top: 16.0, bottom: 8.0),
          child: new Text ('Block Name'),
        ),

        new Container(
          margin: const EdgeInsets.fromLTRB(16.0, 8.0, 0.0, 8.0),
          child: new Text ('Block A1',
          style: new TextStyle(
            fontSize: 16.0,
            fontWeight: FontWeight.bold
          ),),
        ),
        new Divider(color: Colors.grey,),
        new Container(
          margin: const EdgeInsets.only(left: 16.0, top: 8.0,bottom: 8.0),
          child: new Text('NO. OF FLOORS',
          style: new TextStyle(
            fontSize: 12.0,
          ),
          ),
        ),



       new Container(
                    child: new Row(
                      children: <Widget>[
                        new Flexible(
                          child: new CustomScrollView(
                            shrinkWrap: true,
                            scrollDirection: Axis.horizontal,
                            slivers: <Widget>[
                          new SliverPadding(
                          padding: const EdgeInsets.all(20.0),
                          sliver: new SliverList(
                            delegate: new SliverChildListDelegate(
                              <Widget>[
                                const Text('this'),
                                const Text('is'),
                                const Text('scroll'),
                                const Text('view'),
                                const Text('inside'),
                                const Text('list'),
                                const Text('view'),
                                const Text('in'),
                                const Text('horizontal'),
                                const Text('direction')
                              ],
                            ),
                          ),
                        ),
                      ],
                          ),
                        ),
                      ],
                    ),
                  ),





      ],

    ),
  ),


  );
   }
}

Answer 1

只要你在水平方向放一个固定高度的容器,我认为这很简单ListView.但也许我不理解你的问题.如果这不起作用,请发布您的代码和您收到的错误消息.

import 'package:flutter/material.dart';
import 'package:flutter/gestures.dart';
import 'dart:collection';

void main() {
  runApp(new MaterialApp(home: new DemoApp()));
}

class DemoApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(title: new Text('Nested ListView Example')),
      body: new Center(
        child: new ListView(
          children: <Widget>[
            new Container(
              height: 80.0,
              child: new ListView(
                scrollDirection: Axis.horizontal,
                children: new List.generate(10, (int index) {
                  return new Card(
                    color: Colors.blue[index * 100],
                    child: new Container(
                      width: 50.0,
                      height: 50.0,
                      child: new Text("$index"),
                    ),
                  );
                }),
              ),
            ),
          ],
        ),
      ),
    );
  }
}

Answer 2

我这样做是为了使我的 Row 小部件可滚动：

Text("Debilidades",
    style: TextStyle(fontWeight: FontWeight.bold)),
SingleChildScrollView(
  scrollDirection: Axis.horizontal,
  padding: EdgeInsets.fromLTRB(10.0, 0.0, 10.0, 0.0),
  child: Row(
      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
      children: pokemon.weaknesses == null
          ? <Widget>[
              Text(
                "No tiene debilidades",
                style: TextStyle(color: Colors.grey),
              )
            ]
          : pokemon.weaknesses
              .map((weakness) => FilterChip(
                  backgroundColor: Colors.red,
                  label: Text(
                    weakness,
                    style: TextStyle(color: Colors.white),
                  ),

                  onSelected: (b) {}))
              .toList()),
),

Answer 3

对于要滚动的行/列，您可以简单地使用该SingleChildScrollView功能并根据需要提及方向。

SingleChildScrollView(
    scrollDirection: Axis.horizontal,
    child: Row(
        children: [
            //provide all the things u want to horizontally scroll here
        ]
    ),
);