Question

我是 flutter 的新手，我尝试使用网格视图，但它显示渲染 flex 在底部溢出了 21 个像素。在 GridView 中，我使用的是图片，但显示错误。谁知道怎么修它？谢谢

我在互联网上搜索，它使用 SingleChildScrollView，但我不想使用它，因为它对于 Grid 视图来说看起来很奇怪

这是我的代码

import 'package:flutter/material.dart';
import 'package:monger_app/page/detail.dart';

class BudgetSettings extends StatefulWidget {
  @override
  _BudgetSettingsState createState() => _BudgetSettingsState();
}

class _BudgetSettingsState extends State<BudgetSettings> {
  List<Container> categorylist = new List();

  var character=[
    {"name":"Food", "image":"food.png"},
    {"name":"Social-Life", "image":"travel.png"},
    {"name":"Transportation", "image":"transportation.png"},
    {"name":"Beauty", "image":"makeup.png"},
    {"name":"Household", "image":"household.png"},
    {"name":"Education", "image":"education.png"},
    {"name":"Health", "image":"health.png"},
    {"name":"Gift", "image":"gift.png"},
    {"name":"Other", "image":"other.png"},
  ];
  _makelist() async {
    for (var i = 0; i < character.length; i++) {
      final newcharacter = character[i];
      final String image = newcharacter["image"];
      categorylist.add(
        new Container(
          padding: new EdgeInsets.all(20.0),
          child: new Card( child:
            new Column(
                  children: <Widget>[
                    new Image.asset('assets/$image', fit: BoxFit.cover,),
                    new Padding(padding: new EdgeInsets.all(5.0),),
                    new Text(newcharacter['name'], style: new TextStyle(fontSize: 18.0),),
                  ],
                ),
            ),
            )
        );
    }
  }

  @override
  void initState() {
    _makelist();
    super.initState();
  }
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Budget Setting'),
      ),

      body: new GridView.count(
          crossAxisCount: 2,
          children: categorylist,
      ),
    );
  }
}

这里是我的输出

Answer 1

解决您问题的一个简单方法是将您的图像小部件包装在一个灵活的小部件中，就像这样：

Flexible(
  child: Image.asset('assets/$image', fit: BoxFit.cover,),
),

A RenderFlex 在底部溢出了 21 个像素

1 个答案: