我需要使用Flutter创建全屏表格。由于我无法使用Table/DataTable这样做,所以我尝试使用Flex/Expanded

Everithing可以按预期工作,但是我无法设置Expandedchild的样式,因此例如看来我无法设置填充。

到目前为止,这是我的代码。
main.dart:

import 'package:flutter/material.dart';

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Flutter Demo',
      home: Calendar2(),
    );
  }
}
calendar2.dart:
import 'package:flutter/material.dart';

class Calendar2 extends StatefulWidget {
  @override
  State<StatefulWidget> createState() => _Calendar2State();

}

class _Calendar2State extends State<Calendar2> {

  @override
  Widget build(BuildContext context) {
    List<CalendarRow> tableRows = buildTable();
    print(tableRows);

    return Scaffold(
      body: Flex(
        direction: Axis.vertical,
        children: tableRows,
      )
    );
  }

  List<CalendarRow> buildTable() {
    List<CalendarRow> rows = <CalendarRow>[];

    for(int i=0; i<4; i++) {
      List<Widget> children = [];
      for(int j=0; j<7; j++) {
        children.add(
          CalendarCell(
            child: Text((i * 7 + j + 1).toString())
          )
        );
      }
      rows.add(
        CalendarRow(
          children: children
        )
      );
    }
    return rows;
  }

}

class CalendarCell extends StatelessWidget {
  Widget child;

  CalendarCell({this.child}) {}

  @override
  Widget build(BuildContext context) {
    return Expanded (
      flex: 1,
      child: Padding(
        child: child,
        padding: EdgeInsets.all(0.0), // this doesn't work for top and bottom
      )
    );
  }
}

class CalendarRow extends StatelessWidget {
  List<Widget> children = <Widget>[];

  CalendarRow({this.children}) {}

  @override
  Widget build(BuildContext context) {
    return Expanded(
      flex: 1,
      child: Flex(
          direction: Axis.horizontal,
          children: children
      )
    );
  }
}

如何在child中设置Expanded的样式?

最佳答案

这是在flutter中用Expanded小部件完成填充的方式

    class DicePage extends StatelessWidget {
    @override
     Widget build(BuildContext context) {
      return Center(
       child: Row(
        children: <Widget>[
         Expanded(
          child: Padding(
           padding: const EdgeInsets.all(16.0),
          child: Image.asset('images/dice1.png'),
        ),
      ),
      Expanded(
        child: Padding(
          padding: const EdgeInsets.all(16.0),
          child: Image.asset('images/dice1.png'),
        ),
      ),
    ],
  ),
);

关于android - 内部填充展开,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/52642665/

10-09 06:58