Question

我是Flutter的新手，但我无法使用ListView构建布局。

顶部滚动条效果很好。但是我想要一个在下面滚动的GridView，它可以滚动整个页面，而不是单独滚动。仅当我在边缘滚动时才有效。

有人可以帮助我吗？这是代码。

这是我遇到麻烦的小部件

import 'package:flutter/material.dart';
import 'package:ubaia/components/titulo.dart';

class Categorias extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Column(
      children: <Widget>[
        Padding(
          padding: const EdgeInsets.all(8.0),
          child: Titulo(title: "Categorias"),
        ),
        GridView.count(
          shrinkWrap: true,
          crossAxisCount: 2,
          scrollDirection: Axis.vertical,
          children: List.generate(8, (index) {
            return Center(
              child: Container(
                height: 130,
                width: 130,
                color: Colors.brown,
              ),
            );
          }),
        )
      ],
    );
  }
}

这是我登陆小部件的页面

//Homepage

import 'package:flutter/material.dart';
import 'package:ubaia/components/comprados_rencentemente.dart';
import 'package:ubaia/components/categorias.dart';

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text(widget.title),
          actions: <Widget>[
            Padding(
              padding: const EdgeInsets.only(right: 16.0),
              child: Icon(Icons.person),
            ),
          ],
        ),
        body: Container(
          child: ListView(
            padding: EdgeInsets.all(16.0),
            children: <Widget>[
              CompradosRecentemente(), //This is the widget that works nice
              Categorias(),
            ],
          ),
        ),
        bottomSheet: Container(
          height: 50,
          color: Colors.brown,
          child: Center(
              child: Text(
            "Minha Cesta",
            style: TextStyle(color: Colors.white),
          )),
        ));
  }
}

Answer 1

在您的代码中-在physics: ClampingScrollPhysics()中添加GridView.count

GridView.count(
          shrinkWrap: true,
          crossAxisCount: 2,
          physics: ClampingScrollPhysics(), // Add this line

Flutter布局问题（ListView和GridView）

1 个答案: