Flutter单词验证插件isitaword的使用

isitaword

一个用于验证字母组合是否构成单词的Flutter插件！

获取开始

只需在pubspec.yaml文件中添加以下内容：

dependencies:
  isitaword: <VERSION>

或者在终端中运行以下命令：

flutter pub add isitaword

使用方法

要验证一个字符串是否为单词，请尝试以下步骤：

导入包

在将要显示小部件的屏幕文件中导入该包：

import 'package:isitaword/isitaword.dart';

验证字符串

调用此函数来检查字符串是否构成单词：

String letters = 'spark';
bool result = isItAWord(letters);

完整示例代码

以下是一个完整的示例代码，展示了如何在Flutter应用中使用isitaword插件：

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

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        colorScheme: const ColorScheme.dark(),
      ),
      home: const Homepage(),
    );
  }
}

class Homepage extends StatefulWidget {
  const Homepage({super.key});

  [@override](/user/override)
  State<Homepage> createState() => _HomepageState();
}

class _HomepageState extends State<Homepage> {
  String query = "";
  int flag = 0;

  void onSubmit(String word) {
    if (isItAWord(word)) {
      flag = 1; // 这意味着该单词是合法的
    } else {
      flag = -1; // 这意味着该单词不是合法的
    }

    setState(() {});
  }

  OutlineInputBorder outlineInputBorder({Color color = Colors.white}) =>
      OutlineInputBorder(
        borderRadius: BorderRadius.circular(15),
        borderSide: BorderSide(
          color: color,
          width: 5,
        ),
      );

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.black,
      body: Padding(
        padding: const EdgeInsets.all(8.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.center,
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            const Text(
              '请输入一组英文字母！',
              style: TextStyle(fontSize: 22),
              textAlign: TextAlign.center,
            ),
            const SizedBox(height: 10),
            // 文本框以读取用户输入的英文字母
            TextFormField(
              decoration: InputDecoration(
                contentPadding: const EdgeInsets.fromLTRB(15, 15, 15, 0),
                border: outlineInputBorder(),
                errorBorder: outlineInputBorder(),
                enabledBorder: outlineInputBorder(),
                focusedBorder: outlineInputBorder(
                  color: Colors.green,
                ),
                disabledBorder: outlineInputBorder(),
                focusedErrorBorder: outlineInputBorder(),
              ),
              cursorHeight: 22,
              cursorColor: Colors.white,
              style: Theme.of(context).textTheme.headline4!.copyWith(
                    fontSize: 22,
                    color: Colors.white,
                  ),
              autovalidateMode: AutovalidateMode.onUserInteraction,
              cursorWidth: 2,
              keyboardType: TextInputType.text,
              // 当用户通过键盘按钮提交文本框时，将调用此函数
              onFieldSubmitted: onSubmit,
              onChanged: (val) {
                query = val;
              },
              validator: (query) {
                if (query!.isEmpty) {
                  return "此字段不能为空";
                }
                return null;
              },
            ),
            const SizedBox(height: 10),
            (flag == 0)
                ? const SizedBox()
                : Text(
                    (flag == 1)
                        ? '是的！这是一个单词'
                        : '不！这不是一个单词',
                    style: const TextStyle(
                      fontSize: 22,
                    ),
                    textAlign: TextAlign.center,
                  ),
          ],
        ),
      ),
    );
  }
}