Question

这是代码：（请回复我似乎找不到的错误

import 'package:flutter/material.dart';

void main() => runApp(MaterialApp(
  home: Scaffold(
    appBar: AppBar(
      title: Text('MyApp'),
      centerTitle: true,
      backgroundColor: Colors.cyan[300],
    ),
    body: Center(
      child: Text(
        'This is MyApp',
        style: TextStyle(
          fontSize: 20.0,
            fontWeight: FontWeight.bold,
          letterSpacing: 2.0,
          color: Colors.blueGrey,
          fontFamily:
        ),
      ),
    ),
    floatingActionButton: FloatingActionButton(
      onPressed: () {},
      child: Text('  CLICK!'),
      backgroundColor: Colors.cyan[300],
    ),
  ),
));

Answer 1

您忘记添加字体系列值。

示例：fontFamily: 'Raleway'

更新代码

import 'package:flutter/material.dart';

void main() => runApp(MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('MyApp'),
          centerTitle: true,
          backgroundColor: Colors.cyan[300],
        ),
        body: Center(
          child: Text(
            'This is MyApp',
            style: TextStyle(
              fontSize: 20.0,
              fontWeight: FontWeight.bold,
              letterSpacing: 2.0,
              color: Colors.blueGrey,
              fontFamily: 'Raleway',
            ),
          ),
        ),
        floatingActionButton: FloatingActionButton(
          onPressed: () {},
          child: Text(' CLICK!'),
          backgroundColor: Colors.cyan[300],
        ),
      ),
    ));

Use a custom font - Flutter

Answer 2

您尚未定义 fontFamily 值。您必须先导入字体，然后才能定义它。用于设置自定义字体。

按照以下步骤添加自定义字体 - https://flutter.dev/docs/cookbook/design/fonts

并且请让您的代码看起来干净简单，或者像这样发布。

颤振给我错误（不知道为什么）（使用颤振和 Android Studio）

2 个答案: