Flutter Listview 无法滚动不显示所有列表

Question

我刚开始接触 flutter。就我而言，我想在我的主页上显示 10 个项目列表视图。但该列表视图仅显示 9 个项目。无法滚动列表视图以显示其他项目。你能看出我的代码有什么问题吗？

我一直在通过寻找具有相同标题但没有任何内容的主题来寻找解决此问题的方法。我已经更改了一些代码行，但出现错误“底部溢出 240 像素”

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';


class HomePage extends StatefulWidget {
  const HomePage({Key? key}) : super(key: key);

  @override
  _HomePageState createState() => _HomePageState();
}

Future<Null> _fetchPartner() async {
  print('Please Wait');
}

class _HomePageState extends State<HomePage> {
  @override
  Widget build(BuildContext context) {
    SystemChrome.setSystemUIOverlayStyle(
      SystemUiOverlayStyle(statusBarColor: Colors.transparent),
    );
    return Scaffold(
        resizeToAvoidBottomInset: false,
        body: RefreshIndicator(
          onRefresh: _fetchPartner,
          child: SingleChildScrollView(
            scrollDirection: Axis.vertical,
            physics: AlwaysScrollableScrollPhysics(),
            child: Column(
              children: <Widget>[
                Row(
                  crossAxisAlignment: CrossAxisAlignment.center,
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    Padding(
                      padding:
                          const EdgeInsetsDirectional.only(top: 18, bottom: 18),
                      child: Text("Powered By:",
                          style: new TextStyle(fontSize: 18.0)),
                    )
                  ],
                ),
                ListView.builder(
                    padding: EdgeInsets.zero,
                    shrinkWrap: true,
                    itemCount: 10,
                    itemBuilder: (BuildContext context, int index) {
                      return Card(
                          margin: EdgeInsets.zero,
                          elevation: 0.4,
                          shape: RoundedRectangleBorder(
                            borderRadius: BorderRadius.circular(0),
                          ),
                          child: Container(
                              child: ListTile(
                                  leading: CircleAvatar(
                                      child: Image.network(
                                          "https://via.placeholder.com/150")),
                                  title: Text(
                                    "Coconut Oil",
                                    style: TextStyle(
                                        color: Colors.black87,
                                        fontWeight: FontWeight.bold),
                                  ),
                                  subtitle: Row(
                                    children: <Widget>[
                                      Icon(Icons.linear_scale,
                                          color: Colors.greenAccent),
                                      Text("Go Green!",
                                          style:
                                              TextStyle(color: Colors.black87))
                                    ],
                                  ),
                                  trailing: Icon(Icons.keyboard_arrow_right,
                                      color: Colors.black87, size: 30.0))));
                    })
              ],
            ),
          ),
        ));
  }
}

Answer 1

将此属性添加到 Listivew.Builder

physics : NeverScrollableScrollPhysics()

因为它在 SingleChildScrollView.

里面

Answer 2

将此行添加到您的代码中。

  import 'package:flutter/material.dart';
    import 'package:flutter/services.dart';
    
    
    class HomePage extends StatefulWidget {
      const HomePage({Key? key}) : super(key: key);
    
      @override
      _HomePageState createState() => _HomePageState();
    }
    
    Future<Null> _fetchPartner() async {
      print('Please Wait');
    }
    
    class _HomePageState extends State<HomePage> {
      @override
      Widget build(BuildContext context) {
        SystemChrome.setSystemUIOverlayStyle(
          SystemUiOverlayStyle(statusBarColor: Colors.transparent),
        );
        return Scaffold(
            resizeToAvoidBottomInset: false,
            body: RefreshIndicator(
              onRefresh: _fetchPartner,
              child: SingleChildScrollView(
                scrollDirection: Axis.vertical,
                physics: AlwaysScrollableScrollPhysics(),
                child: Column(
                  children: <Widget>[
                    Row(
                      crossAxisAlignment: CrossAxisAlignment.center,
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: [
                        Padding(
                          padding:
                              const EdgeInsetsDirectional.only(top: 18, bottom: 18),
                          child: Text("Powered By:",
                              style: new TextStyle(fontSize: 18.0)),
                        )
                      ],
                    ),
                    ListView.builder(
                        padding: EdgeInsets.zero,
                         physics : NeverScrollableScrollPhysics() 
                        shrinkWrap: true,
                        itemCount: 10,
                        itemBuilder: (BuildContext context, int index) {
                          return Card(
                              margin: EdgeInsets.zero,
                              elevation: 0.4,
                              shape: RoundedRectangleBorder(
                                borderRadius: BorderRadius.circular(0),
                              ),
                              child: Container(
                                  child: ListTile(
                                      leading: CircleAvatar(
                                          child: Image.network(
                                              "https://via.placeholder.com/150")),
                                      title: Text(
                                        "Coconut Oil",
                                        style: TextStyle(
                                            color: Colors.black87,
                                            fontWeight: FontWeight.bold),
                                      ),
                                      subtitle: Row(
                                        children: <Widget>[
                                          Icon(Icons.linear_scale,
                                              color: Colors.greenAccent),
                                          Text("Go Green!",
                                              style:
                                                  TextStyle(color: Colors.black87))
                                        ],
                                      ),
                                      trailing: Icon(Icons.keyboard_arrow_right,
                                          color: Colors.black87, size: 30.0))));
                        })
                  ],
                ),
              ),
            ));
      }
    }

Answer 3

删除 singleChildScrollview 并在 listview.builder 上添加一个展开的小部件。

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';


class HomePage extends StatefulWidget {
  const HomePage({Key? key}) : super(key: key);

  @override
  _HomePageState createState() => _HomePageState();
}

Future<Null> _fetchPartner() async {
  print('Please Wait');
}

class _HomePageState extends State<HomePage> {
  @override
  Widget build(BuildContext context) {
    SystemChrome.setSystemUIOverlayStyle(
      SystemUiOverlayStyle(statusBarColor: Colors.transparent),
    );
    return Scaffold(
        resizeToAvoidBottomInset: false,
        body: RefreshIndicator(
          onRefresh: _fetchPartner,
            child: Column(
              children: <Widget>[
                Row(
                  crossAxisAlignment: CrossAxisAlignment.center,
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    Padding(
                      padding:
                          const EdgeInsetsDirectional.only(top: 18, bottom: 18),
                      child: Text("Powered By:",
                          style: new TextStyle(fontSize: 18.0)),
                    )
                  ],
                ),
                    Expanded(
                    
                    child : ListView.builder(
                    padding: EdgeInsets.zero,
                    shrinkWrap: true,
                    itemCount: 10,
                    itemBuilder: (BuildContext context, int index) {
                      return Card(
                          margin: EdgeInsets.zero,
                          elevation: 0.4,
                          shape: RoundedRectangleBorder(
                            borderRadius: BorderRadius.circular(0),
                          ),
                          child: Container(
                              child: ListTile(
                                  leading: CircleAvatar(
                                      child: Image.network(
                                          "https://via.placeholder.com/150")),
                                  title: Text(
                                    "Coconut Oil",
                                    style: TextStyle(
                                        color: Colors.black87,
                                        fontWeight: FontWeight.bold),
                                  ),
                                  subtitle: Row(
                                    children: <Widget>[
                                      Icon(Icons.linear_scale,
                                          color: Colors.greenAccent),
                                      Text("Go Green!",
                                          style:
                                              TextStyle(color: Colors.black87))
                                    ],
                                  ),
                                  trailing: Icon(Icons.keyboard_arrow_right,
                                      color: Colors.black87, size: 30.0))));
                    })
              ],
            ),
          ),
        ));
  }
}

Answer 4

试试下面的代码：

      SingleChildScrollView(
                child: Column(
                  children: <Widget>[
                    Row(
                      crossAxisAlignment: CrossAxisAlignment.center,
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: [
                        Padding(
                          padding: const EdgeInsetsDirectional.only(
                              top: 18, bottom: 18),
                          child: Text("Powered By:",
                              style: new TextStyle(fontSize: 18.0)),
                        )
                      ],
                    ),
                    ListView.builder(
                        padding: EdgeInsets.zero,
                        shrinkWrap: true,
                        physics:NeverScrollableScrollPhysics(),
                        itemCount: 10,
                        itemBuilder: (BuildContext context, int index) {
                          return Card(
                              margin: EdgeInsets.zero,
                              elevation: 0.4,
                              shape: RoundedRectangleBorder(
                                borderRadius: BorderRadius.circular(0),
                              ),
                              child: Container(
                                  child: ListTile(
                                      leading: CircleAvatar(
                                          child: Image.network(
                                              "https://via.placeholder.com/150")),
                                      title: Text(
                                        "Coconut Oil",
                                        style: TextStyle(
                                            color: Colors.black87,
                                            fontWeight: FontWeight.bold),
                                      ),
                                      subtitle: Row(
                                        children: <Widget>[
                                          Icon(Icons.linear_scale,
                                              color: Colors.greenAccent),
                                          Text("Go Green!",
                                              style: TextStyle(
                                                  color: Colors.black87))
                                        ],
                                      ),
                                      trailing: Icon(
                                          Icons.keyboard_arrow_right,
                                          color: Colors.black87,
                                          size: 30.0))));
                        })
                  ],
                ),
              ),

您的结果屏幕：

Answer 5

请尝试使用此代码用这个替换你的 body 标签并告诉我

Column(
        mainAxisAlignment: MainAxisAlignment.start,
        children: <Widget>[
          
          
          Row(
            crossAxisAlignment: CrossAxisAlignment.center,
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Padding(
                padding: const EdgeInsetsDirectional.only(top: 18, bottom: 18),
                child:
                    Text("Powered By:", style: new TextStyle(fontSize: 18.0)),
              )
            ],
          ) ,
         
         
             Expanded ( child : ListView.builder(
                  padding: EdgeInsets.zero,
                  shrinkWrap: true,
                  itemCount: 13,
                  itemBuilder: (BuildContext context, int index) {
                    return Card(
                        margin: EdgeInsets.zero,
                        elevation: 0.4,
                        shape: RoundedRectangleBorder(
                          borderRadius: BorderRadius.circular(0),
                        ),
                        child: Container(
                            child: ListTile(
                                leading: CircleAvatar(
                                    child: Image.network(
                                        "")),
                                title: Text(
                                  "Coconut Oil",
                                  style: TextStyle(
                                      color: Colors.black87,
                                      fontWeight: FontWeight.bold),
                                ),
                                subtitle: Row(
                                  children: <Widget>[
                                    Icon(Icons.linear_scale,
                                        color: Colors.greenAccent),
                                    Text("Go Green!",
                                        style: TextStyle(color: Colors.black87))
                                  ],
                                ),
                                trailing: Icon(Icons.keyboard_arrow_right,
                                    color: Colors.black87, size: 30.0))));
                  }) )
        
      ]
    )

Flutter Listview 无法滚动不显示所有列表

Flutter Listview can't scroll and not display all list

android

listview

dart

flutter