Code Copilot AI生成代码浅测
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引言
评测背景
近年来，人工智能技术在软件开发领域取得了显著的进展，其中包括AI生成代码的应用。AI生成代码是指利用机器学习和自然语言处理等技术，让计算机能够根据给定的问题或需求自动生成代码。
AI生成代码的概念引发了广泛的研究和探索。传统的编码过程需要开发人员具备深入的编程知识和经验，而AI生成代码则提供了一种更加便捷和高效的方式来创建代码。它可以自动化部分编码任务，减少人为的错误和繁琐的重复工作，同时提高开发效率和生产力。
评测目的
评测AI生成代码的目的是为了深入了解该技术在软件开发中的应用和潜力。通过评测，我们可以评估AI生成代码的优势、限制和适用范围。
评测概述
本次评测旨在对AI生成代码技术进行全面评估，探索其在软件开发领域的应用和潜力。我们将对不同的AI生成代码模型和方法进行测试，以评估其生成代码的质量、效率和创新性。
涉及到的工具：
- GitHub Copilot
- GPT3.5
- Bard
- Bing
评测方法
评测维度
-
代码质量评估：
- 我们将对AI生成的代码进行质量评估，包括代码的结构、逻辑、命名规范、注释和可读性等方面。通过比较生成代码与手动编写代码的质量差异，我们可以评估AI生成代码在实际项目中的可用性和实用性。
-
开发效率比较：
- 我们将比较使用AI生成代码和传统手动编写代码的开发效率。通过测量开发时间、工作量和代码重用程度等指标，我们可以评估AI生成代码在加速开发过程和减少开发工作量方面的能力。
-
创新性和多样性分析：
- 我们将关注AI生成代码的创新性和多样性。评估AI系统在生成代码时是否能提供不同的解决方案和代码风格，以促进创新和灵活性。
-
领域适应性测试：
- 我们将测试不同领域和复杂度的编码任务，评估AI生成代码技术在特定领域的适应性和性能表现。
评测场景
- 代码生成
- 生成函数
- 生成API调用
- 类型注释
- UI组件
- 套路代码
- 问题修复
- 类型错误
- 未定义的变量
- 未捕捉的异常
- 未实现的接口方法
- 代码重构
- 合理的变量和函数命名
- 消除重复代码
- 简化条件语句
- 潜在的性能问题
- UT生成
- 纯函数
- 包含UI操作
- 依赖全局变量
- 包含异步操作
- 文档编写
- 纯函数
- UI组件
- 技术方案
评测结果
代码生成
生成函数
GitHub Copilot
/// 用dart生成一个函数把一个数组分成N个数组
List<List<int>> splitList(List<int> list, int n) {
var result = <List<int>>[];
var temp = <int>[];
for (var i = 0; i < list.length; i++) {
temp.add(list[i]);
if ((i + 1) % n == 0) {
result.add(temp);
temp = <int>[];
}
}
if (temp.isNotEmpty) {
result.add(temp);
}
return result;
}
GPT3.5
/// 用dart生成一个函数把一个数组分成N个数组
List<List<T>> splitArray<T>(List<T> array, int N) {
final int totalLength = array.length;
final int chunkSize = (totalLength / N).ceil();
final List<List<T>> result = [];
for (int i = 0; i < totalLength; i += chunkSize) {
final List<T> chunk = array.sublist(i, i + chunkSize);
result.add(chunk);
}
return result;
}
Bard
/// Use dart to generate a function to divide an array into N arrays
List<List<int>> divideArray(List<int> array, int n) {
if (n <= 0) {
throw ArgumentError('n must be positive');
}
List<List<int>> chunks = [];
for (int i = 0; i < array.length; i += n) {
chunks.add(array.sublist(i, min(i + n, array.length)));
}
return chunks;
}
Bing
/// 用dart生成一个函数把一个数组分成N个数组
List<List<T>> splitArray<T>(List<T> array, int n) {
if (n <= 0) throw ArgumentError('n must be positive');
final result = <List<T>>[];
final chunkSize = (array.length / n).ceil();
for (var i = 0; i < array.length; i += chunkSize) {
result.add(array.sublist(i, i + chunkSize));
}
return result;
}
生成API调用
GitHub Copilot
// 使用dio并用生成的rest发起一个POST请求，请求payload参数为 { name: '111',age: 333, } 请求path是 https://api.example.com/api/v1/test/ 把返回的数据打印出来
void postRequest() async {
// 生成的rest
const rest = 'https://api.example.com/api/v1/test/';
// 使用dio发起一个POST请求
// 参数 [rest]: 请求的地址
// 参数 [data]: 请求的数据
final response = await dio.post(rest, data: {
'name': '111',
'age': 333,
});
// 打印返回的数据
print(response.data);
}
GPT3.5
// 使用dio并用生成的rest发起一个POST请求，请求payload参数为 { name: '111',age: 333, } 请求path是 https://api.example.com/api/v1/test/ 把返回的数据打印出来
import 'package:dio/dio.dart';
void main() async {
final dio = Dio();
final payload = {
'name': '111',
'age': 333,
};
final url = 'https://api.example.com/api/v1/test/';
try {
final response = await dio.post(url, data: payload);
print(response.data);
} catch (e) {
print('Error: $e');
}
}
Bard
/// Use dio and use the generated rest to initiate a POST request, the request payload parameter is { name: '111', age: 333, } The request path is https://api.example.com/api/v1/test/ Send the returned data print it out
import 'package:dio/dio.dart';
void main() async {
// Create a Dio instance
Dio dio = Dio();
// Set the request headers
dio.options.headers['Content-Type'] = 'application/json';
// Create the request payload
Map<String, dynamic> data = {
'name': '111',
'age': 333,
};
// Initiate the POST request
Response response = await dio.post('https://api.example.com/api/v1/test/', data: data);
// Check the response status code
if (response.statusCode == 200) {
// Print the returned data
print(response.data);
} else {
// Handle the error
print('Error: ${response.statusCode}');
}
}
Bing
/// 使用dio并用生成的rest发起一个POST请求，请求payload参数为 { name: '111',age: 333, } 请求path是 https://api.example.com/api/v1/test/ 把返回的数据打印出来
import 'package:dio/dio.dart';
void main() async {
final dio = Dio();
final payload = {'name': '111', 'age': 333};
final response = await dio.post(
'https://api.example.com/api/v1/test/',
data: payload,
);
print(response.data);
}
类型注释
// 给下面的dart函数添加注释
String timePeriodCompositor(Map<String, dynamic> timePeriod) {
final bool hasMonday = timePeriod['hasMonday'];
final bool hasTuesday = timePeriod['hasTuesday'];
final bool hasWednesday = timePeriod['hasWednesday'];
final bool hasThursday = timePeriod['hasThursday'];
final bool hasFriday = timePeriod['hasFriday'];
final bool hasSaturday = timePeriod['hasSaturday'];
final bool hasSunday = timePeriod['hasSunday'];
final bool hasLegalHolidays = timePeriod['hasLegalHolidays'];
final int startHour = timePeriod['startHour'];
final int startMinute = timePeriod['startMinute'];
final int endHour = timePeriod['endHour'];
final int endMinute = timePeriod['endMinute'];
final Map<int, String> dayMap = {
1: '周一',
2: '周二',
3: '周三',
4: '周四',
5: '周五',
6: '周六',
7: '周日',
};
final List<int> dayArray = [
hasMonday ? 1 : 0,
hasTuesday ? 2 : 0,
hasWednesday ? 3 : 0,
hasThursday ? 4 : 0,
hasFriday ? 5 : 0,
hasSaturday ? 6 : 0,
hasSunday ? 7 : 0,
];
final String dayDesc = dayArray
.join('')
.split('0')
.map((chunk) {
switch (chunk.length) {
case 0:
return '';
case 1:
return dayMap[int.parse(chunk[0])];
case 2:
return '${dayMap[int.parse(chunk[0])]}、${dayMap[int.parse(chunk[1])]}';
case 7:
return '每天';
default:
return '${dayMap[int.parse(chunk[0])]} ~ ${dayMap[int.parse(chunk[chunk.length - 1])]}}';
}
})
.where((str) => str?.isNotEmpty == true)
.join('、');
final String timeDesc =
'$startHour:$startMinute ~ ${endHour == 23 && endMinute == 59 ? '24:00' : '$endHour:$endMinute'}';
return '$dayDesc，$timeDesc，${hasLegalHolidays ? '' : '除'}法定节假日可用';
}
GitHub Copilot
// 给下面的dart函数添加类型注释
/// Composes a time period string based on the given map of time period data.
///
/// The time period data should contain the following keys:
/// - hasMonday: a boolean indicating whether the time period includes Mondays
/// - hasTuesday: a boolean indicating whether the time period includes Tuesdays
/// - hasWednesday: a boolean indicating whether the time period includes Wednesdays
/// - hasThursday: a boolean indicating whether the time period includes Thursdays
/// - hasFriday: a boolean indicating whether the time period includes Fridays
/// - hasSaturday: a boolean indicating whether the time period includes Saturdays
/// - hasSunday: a boolean indicating whether the time period includes Sundays
/// - hasLegalHolidays: a boolean indicating whether the time period includes legal holidays
/// - startHour: an integer indicating the starting hour of the time period
/// - startMinute: an integer indicating the starting minute of the time period
/// - endHour: an integer indicating the ending hour of the time period
/// - endMinute: an integer indicating the ending minute of the time period
///
/// Returns a string describing the time period in the format:
/// "{dayDesc}，{timeDesc}，{availabilityDesc}"
///
/// where:
/// - dayDesc: a string describing the days of the week the time period is available
/// - timeDesc: a string describing the time range of the time period
/// - availabilityDesc: a string indicating whether the time period is available during legal holidays
String timePeriodCompositor(Map<String, dynamic> timePeriod) {
final bool hasMonday = timePeriod['hasMonday'];
final bool hasTuesday = timePeriod['hasTuesday'];
final bool hasWednesday = timePeriod['hasWednesday'];
final bool hasThursday = timePeriod['hasThursday'];
final bool hasFriday = timePeriod['hasFriday'];
final bool hasSaturday = timePeriod['hasSaturday'];
final bool hasSunday = timePeriod['hasSunday'];
final bool hasLegalHolidays = timePeriod['hasLegalHolidays'];
final int startHour = timePeriod['startHour'];
final int startMinute = timePeriod['startMinute'];
final int endHour = timePeriod['endHour'];
final int endMinute = timePeriod['endMinute'];
final Map<int, String> dayMap = {
1: '周一',
2: '周二',
3: '周三',
4: '周四',
5: '周五',
6: '周六',
7: '周日',
};
final List<int> dayArray = [
hasMonday ? 1 : 0,
hasTuesday ? 2 : 0,
hasWednesday ? 3 : 0,
hasThursday ? 4 : 0,
hasFriday ? 5 : 0,
hasSaturday ? 6 : 0,
hasSunday ? 7 : 0,
];
final String dayDesc = dayArray
.join('')
.split('0')
.map((chunk) {
switch (chunk.length) {
case 0:
return '';
case 1:
return dayMap[int.parse(chunk[0])];
case 2:
return '${dayMap[int.parse(chunk[0])]}、${dayMap[int.parse(chunk[1])]}';
case 7:
return '每天';
default:
return '${dayMap[int.parse(chunk[0])]} ~ ${dayMap[int.parse(chunk[chunk.length - 1])]}}';
}
})
.where((str) => str?.isNotEmpty == true)
.join('、');
final String timeDesc =
'$startHour:$startMinute ~ ${endHour == 23 && endMinute == 59 ? '24:00' : '$endHour:$endMinute'}';
return '$dayDesc，$timeDesc，${hasLegalHolidays ? '' : '除'}法定节假日可用';
}
GPT3.5
/// Composes a time period description based on the provided [timePeriod] data.
///
/// The [timePeriod] should be a map with the following keys:
/// - 'hasMonday': bool, indicating if Monday is included in the time period.
/// - 'hasTuesday': bool, indicating if Tuesday is included in the time period.
/// - 'hasWednesday': bool, indicating if Wednesday is included in the time period.
/// - 'hasThursday': bool, indicating if Thursday is included in the time period.
/// - 'hasFriday': bool, indicating if Friday is included in the time period.
/// - 'hasSaturday': bool, indicating if Saturday is included in the time period.
/// - 'hasSunday': bool, indicating if Sunday is included in the time period.
/// - 'hasLegalHolidays': bool, indicating if legal holidays are included in the time period.
/// - 'startHour': int, the starting hour of the time period.
/// - 'startMinute': int, the starting minute of the time period.
/// - 'endHour': int, the ending hour of the time period.
/// - 'endMinute': int, the ending minute of the time period.
///
/// Returns a composed time period description string.
String timePeriodCompositor(Map<String, dynamic> timePeriod) {
final bool hasMonday = timePeriod['hasMonday'];
final bool hasTuesday = timePeriod['hasTuesday'];
final bool hasWednesday = timePeriod['hasWednesday'];
final bool hasThursday = timePeriod['hasThursday'];
final bool hasFriday = timePeriod['hasFriday'];
final bool hasSaturday = timePeriod['hasSaturday'];
final bool hasSunday = timePeriod['hasSunday'];
final bool hasLegalHolidays = timePeriod['hasLegalHolidays'];
final int startHour = timePeriod['startHour'];
final int startMinute = timePeriod['startMinute'];
final int endHour = timePeriod['endHour'];
final int endMinute = timePeriod['endMinute'];
final Map<int, String> dayMap = {
1: '周一',
2: '周二',
3: '周三',
4: '周四',
5: '周五',
6: '周六',
7: '周日',
};
final List<int> dayArray = [
hasMonday ? 1 : 0,
hasTuesday ? 2 : 0,
hasWednesday ? 3 : 0,
hasThursday ? 4 : 0,
hasFriday ? 5 : 0,
hasSaturday ? 6 : 0,
hasSunday ? 7 : 0,
];
final String dayDesc = dayArray
.join('')
.split('0')
.map((chunk) {
switch (chunk.length) {
case 0:
return '';
case 1:
return dayMap[int.parse(chunk[0])];
case 2:
return '${dayMap[int.parse(chunk[0])]}、${dayMap[int.parse(chunk[1])]}';
case 7:
return '每天';
default:
return '${dayMap[int.parse(chunk[0])]} ~ ${dayMap[int.parse(chunk[chunk.length - 1])]}}';
}
})
.where((str) => str?.isNotEmpty == true)
.join('、');
final String timeDesc =
'$startHour:$startMinute ~ ${endHour == 23 && endMinute == 59 ? '24:00' : '$endHour:$endMinute'}';
return '$dayDesc，$timeDesc，${hasLegalHolidays ? '' : '除'}法定节假日可用';
}
Bard
// Add comments to the following dart functions
/// This function composes a string that represents the time period.
///
/// The time period is represented by a map with the following keys:
///
/// * `hasMonday`: Whether Monday is included in the time period.
/// * `hasTuesday`: Whether Tuesday is included in the time period.
/// * `hasWednesday`: Whether Wednesday is included in the time period.
/// * `hasThursday`: Whether Thursday is included in the time period.
/// * `hasFriday`: Whether Friday is included in the time period.
/// * `hasSaturday`: Whether Saturday is included in the time period.
/// * `hasSunday`: Whether Sunday is included in the time period.
/// * `hasLegalHolidays`: Whether the time period includes legal holidays.
/// * `startHour`: The start hour of the time period.
/// * `startMinute`: The start minute of the time period.
/// * `endHour`: The end hour of the time period.
/// * `endMinute`: The end minute of the time period.
///
/// The function returns a string that has the following format:
///
/// `周一、周二 ~ 周五，10:00 ~ 12:00，法定节假日可用`
///
/// The string represents the time period as a list of days, start and end time, and whether legal holidays are included.
///
/// For example, the string `周一、周二 ~ 周五，10:00 ~ 12:00，法定节假日可用` represents a time period that includes Monday, Tuesday, Wednesday, Thursday, from 10:00 to 12:00, and is also available on legal holidays.
String timePeriodCompositor(Map<String, dynamic> timePeriod) {
final bool hasMonday = timePeriod['hasMonday'];
final bool hasTuesday = timePeriod['hasTuesday'];
final bool hasWednesday = timePeriod['hasWednesday'];
final bool hasThursday = timePeriod['hasThursday'];
final bool hasFriday = timePeriod['hasFriday'];
final bool hasSaturday = timePeriod['hasSaturday'];
final bool hasSunday = timePeriod['hasSunday'];
final bool hasLegalHolidays = timePeriod['hasLegalHolidays'];
final int startHour = timePeriod['startHour'];
final int startMinute = timePeriod['startMinute'];
final int endHour = timePeriod['endHour'];
final int endMinute = timePeriod['endMinute'];
final Map<int, String> dayMap = {
1: '周一',
2: '周二',
3: '周三',
4: '周四',
5: '周五',
6: '周六',
7: '周日',
};
final List<int> dayArray = [
hasMonday ? 1 : 0,
hasTuesday ? 2 : 0,
hasWednesday ? 3 : 0,
hasThursday ? 4 : 0,
hasFriday ? 5 : 0,
hasSaturday ? 6 : 0,
hasSunday ? 7 : 0,
];
final String dayDesc = dayArray
.join('')
.split('0')
.map((chunk) {
switch (chunk.length) {
case 0:
return '';
case 1:
return dayMap[int.parse(chunk[0])];
case 2:
return '${dayMap[int.parse(chunk[0])]}、${dayMap[int.parse(chunk[1])]}';
case 7:
return '每天';
default:
return '${dayMap[int.parse(chunk[0])]} ~ ${dayMap[int.parse(chunk[chunk.length - 1])]}}';
}
})
.where((str) => str?.isNotEmpty == true)
.join('、');
final String timeDesc =
'$startHour:$startMinute ~ ${endHour == 23 && endMinute == 59 ? '24:00' : '$endHour:$endMinute'}';
return '$dayDesc，$timeDesc，${hasLegalHolidays ? '' : '除'}法定节假日可用';
}
Bing
/// 组合时间段描述
///
/// [timePeriod] 是一个包含时间段信息的Map，它应该包含以下键值对：
/// - 'hasMonday'：bool类型，表示是否包含周一
/// - 'hasTuesday'：bool类型，表示是否包含周二
/// - 'hasWednesday'：bool类型，表示是否包含周三
/// - 'hasThursday'：bool类型，表示是否包含周四
/// - 'hasFriday'：bool类型，表示是否包含周五
/// - 'hasSaturday'：bool类型，表示是否包含周六
/// - 'hasSunday'：bool类型，表示是否包含周日
/// - 'hasLegalHolidays'：bool类型，表示是否包含法定节假日
/// - 'startHour'：int类型，表示开始时间的小时数
/// - 'startMinute'：int类型，表示开始时间的分钟数
/// - 'endHour'：int类型，表示结束时间的小时数
/// - 'endMinute'：int类型，表示结束时间的分钟数
///
/// 返回一个字符串，描述给定的时间段。
String timePeriodCompositor(Map<String, dynamic> timePeriod) {
// 从timePeriod中提取各个值
final bool hasMonday = timePeriod['hasMonday'];
final bool hasTuesday = timePeriod['hasTuesday'];
final bool hasWednesday = timePeriod['hasWednesday'];
final bool hasThursday = timePeriod['hasThursday'];
final bool hasFriday = timePeriod['hasFriday'];
final bool hasSaturday = timePeriod['hasSaturday'];
final bool hasSunday = timePeriod['hasSunday'];
final bool hasLegalHolidays = timePeriod['hasLegalHolidays'];
final int startHour = timePeriod['startHour'];
final int startMinute = timePeriod['startMinute'];
final int endHour = timePeriod['endHour'];
final int endMinute = timePeriod['endMinute'];
// 定义一个星期几的映射表
final Map<int, String> dayMap = {
1: '周一',
2: '周二',
3: '周三',
4: '周四',
5: '周五',
6: '周六',
7: '周日',
};
// 根据timePeriod中的值创建一个星期几的数组
final List<int> dayArray = [
hasMonday ? 1 : 0,
hasTuesday ? 2 : 0,
hasWednesday ? 3 : 0,
hasThursday ? 4 : 0,
hasFriday ? 5 : 0,
hasSaturday ? 6 : 0,
hasSunday ? 7 : 0,
];
// 将dayArray转换为一个字符串，然后根据0来分割它
// 对于每个分割后的字符串，根据它的长度来生成描述
final String dayDesc = dayArray
.join('')
.split('0')
.map((chunk) {
switch (chunk.length) {
case 0:
return '';
case 1:
return dayMap[int.parse(chunk[0])];
case 2:
return '${dayMap[int.parse(chunk[0])]}、${dayMap[int.parse(chunk[1])]}';
case 7:
return '每天';
default:
return '${dayMap[int.parse(chunk[0])]} ~ ${dayMap[int.parse(chunk[chunk.length - 1])]}}';
}
})
.where((str) => str?.isNotEmpty == true)
.join('、');
// 组合开始和结束时间的描述
final String timeDesc =
'$startHour:$startMinute ~ ${endHour == 23 && endMinute == 59 ? '24:00' : '$endHour:$endMinute'}';
// 返回最终的描述
return '$dayDesc，$timeDesc，${hasLegalHolidays ? '' : '除'}法定节假日可用';
}
UI组件
GitHub Copilot
/// 用dart实现一个登录界面，有两种模式，验证码登录和密码登录 验证码登录时有两个输入项，手机号和验证码，输入的手机号合法后才可发送验证码，60秒内只可以发送一次验证码
import 'dart:async';
import 'package:flutter/material.dart';
class LoginScreen extends StatefulWidget {
@override
_LoginScreenState createState() => _LoginScreenState();
}
class _LoginScreenState extends State<LoginScreen> {
final _formKey = GlobalKey<FormState>();
final _phoneController = TextEditingController();
final _codeController = TextEditingController();
bool _isPasswordLogin = true;
bool _isSendingCode = false;
bool _canSendCode = true;
Timer? _timer;
int _countdown = 60;
@override
void dispose() {
_timer?.cancel();
_phoneController.dispose();
_codeController.dispose();
super.dispose();
}
void _startTimer() {
_timer = Timer.periodic(Duration(seconds: 1), (timer) {
setState(() {
_countdown--;
});
if (_countdown == 0) {
_timer?.cancel();
setState(() {
_canSendCode = true;
});
}
});
}
void _sendCode() {
setState(() {
_isSendingCode = true;
_canSendCode = false;
_countdown = 60;
});
_startTimer();
}
void _submit() {
if (_formKey.currentState!.validate()) {
// TODO: Perform login
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Login'),
),
body: Padding(
padding: const EdgeInsets.all(16.0),
child: Form(
key: _formKey,
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
SizedBox(height: 16.0),
Row(
children: [
Expanded(
child: ElevatedButton(
onPressed: () {
setState(() {
_isPasswordLogin = true;
});
},
child: Text('Password Login'),
style: ElevatedButton.styleFrom(
primary: _isPasswordLogin ? Colors.blue : null,
),
),
),
SizedBox(width: 16.0),
Expanded(
child: ElevatedButton(
onPressed: () {
setState(() {
_isPasswordLogin = false;
});
},
child: Text('Verification Code Login'),
style: ElevatedButton.styleFrom(
primary: !_isPasswordLogin ? Colors.blue : null,
),
),
),
],
),
SizedBox(height: 16.0),
TextFormField(
controller: _phoneController,
keyboardType: TextInputType.phone,
decoration: InputDecoration(
labelText: 'Phone Number',
),
validator: (value) {
if (value == null || value.isEmpty) {
return 'Please enter your phone number';
}
// TODO: Add phone number validation
return null;
},
),
SizedBox(height: 16.0),
if (_isPasswordLogin)
TextFormField(
obscureText: true,
decoration: InputDecoration(
labelText: 'Password',
),
validator: (value) {
if (value == null || value.isEmpty) {
return 'Please enter your password';
}
// TODO: Add password validation
return null;
},
),
if (!_isPasswordLogin)
Row(
children: [
Expanded(
child: TextFormField(
controller: _codeController,
keyboardType: TextInputType.number,
decoration: InputDecoration(
labelText: 'Verification Code',
),
validator: (value) {
if (value == null || value.isEmpty) {
return 'Please enter the verification code';
}
// TODO: Add verification code validation
return null;
},
),
),
SizedBox(width: 16.0),
ElevatedButton(
onPressed: _canSendCode ? _sendCode : null,
child: Text(_canSendCode ? 'Send Code' : '$_countdown s'),
),
],
),
SizedBox(height: 16.0),
ElevatedButton(
onPressed: _submit,
child: Text('Login'),
),
],
),
),
),
);
}
}
GPT3.5
/// 用dart实现一个登录界面，有两种模式，验证码登录和密码登录 验证码登录时有两个输入项，手机号和验证码，输入的手机号合法后才可发送验证码，60秒内只可以发送一次验证码
import 'dart:async';
import 'package:flutter/material.dart';
class LoginPage extends StatefulWidget {
@override
_LoginPageState createState() => _LoginPageState();
}
class _LoginPageState extends State<LoginPage> {
bool _isCodeLogin = true;
bool _isSendingCode = false;
bool _isCodeSent = false;
Timer? _codeTimer;
int _remainingSeconds = 0;
final TextEditingController _phoneController = TextEditingController();
final TextEditingController _codeController = TextEditingController();
@override
void dispose() {
_codeTimer?.cancel();
super.dispose();
}
void _startCodeTimer() {
_codeTimer?.cancel();
_remainingSeconds = 60;
_codeTimer = Timer.periodic(Duration(seconds: 1), (Timer timer) {
setState(() {
if (_remainingSeconds > 0) {
_remainingSeconds--;
} else {
timer.cancel();
}
});
});
}
void _sendCode() {
// Simulate sending code
setState(() {
_isSendingCode = true;
});
// Simulate API request delay
Future.delayed(Duration(seconds: 2), () {
setState(() {
_isSendingCode = false;
_isCodeSent = true;
});
_startCodeTimer();
});
}
void _login() {
// Perform login logic here
String phoneNumber = _phoneController.text;
String code = _codeController.text;
// Print the login information
print('Phone Number: $phoneNumber');
print('Code: $code');
// Reset the input fields
_phoneController.clear();
_codeController.clear();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Login'),
),
body: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
SizedBox(height: 20),
ToggleButtons(
isSelected: [_isCodeLogin, !_isCodeLogin],
onPressed: (index) {
setState(() {
_isCodeLogin = index == 0;
});
},
children: [
Padding(
padding: const EdgeInsets.all(8.0),
child: Text('验证码登录'),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Text('密码登录'),
),
],
),
SizedBox(height: 20),
TextField(
controller: _phoneController,
decoration: InputDecoration(
labelText: '手机号',
),
),
SizedBox(height: 10),
if (_isCodeLogin) ...[
TextField(
controller: _codeController,
decoration: InputDecoration(
labelText: '验证码',
),
),
SizedBox(height: 10),
Row(
children: [
Expanded(
child: ElevatedButton(
onPressed: _isSendingCode || _remainingSeconds > 0
? null
: () {
_sendCode();
},
child: _isSendingCode
? CircularProgressIndicator(
valueColor:
AlwaysStoppedAnimation<Color>(Colors.white),
)
: Text('发送验证码'),
),
),
SizedBox(width: 10),
Text(
_remainingSeconds > 0
? '$_remainingSeconds秒后重新发送'
: '',
style: TextStyle(color: Colors.grey),
),
],
),
] else ...[
TextField(
decoration: InputDecoration(
labelText: '密码',
),
obscureText: true,
),
],
SizedBox(height: 20),
ElevatedButton(
onPressed: _isCodeLogin && !_isCodeSent
? null
: () {
_login();
},
child: Text('登录'),
),
],
),
),
);
}
}
void main() {
runApp(MaterialApp(
title: 'Login Demo',
theme: ThemeData(primarySwatch: Colors.blue),
home: LoginPage(),
));
}
Bard
/// Implement a login interface with dart, there are two modes, verification code login and password login verification code login, there are two input items, mobile phone number and verification code, the verification code can only be sent after the entered mobile phone number is legal, 60 seconds The verification code can only be sent once within
import 'dart:async';
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Login',
home: LoginPage(),
);
}
}
class LoginPage extends StatefulWidget {
@override
State<LoginPage> createState() => _LoginPageState();
}
class _LoginPageState extends State<LoginPage> {
final TextEditingController _mobileController = TextEditingController();
final TextEditingController _verificationCodeController =
TextEditingController();
bool _isVerificationCodeSent = false;
Timer _timer;
@override
void initState() {
super.initState();
_timer = Timer(Duration(seconds: 60), () {
setState(() {
_isVerificationCodeSent = false;
});
});
}
@override
void dispose() {
_timer.cancel();
super.dispose();
}
void _sendVerificationCode() async {
if (_mobileController.text.isEmpty) {
return;
}
setState(() {
_isVerificationCodeSent = true;
});
// TODO: Send verification code to the mobile phone number.
}
void _login() async {
if (_mobileController.text.isEmpty ||
_verificationCodeController.text.isEmpty) {
return;
}
// TODO: Login with the mobile phone number and verification code.
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text('Login')),
body: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
children: [
TextField(
controller: _mobileController,
decoration: InputDecoration(labelText: 'Mobile Phone Number'),
),
SizedBox(height: 16.0),
_isVerificationCodeSent
? RaisedButton(
child: Text('Resend Verification Code'),
onPressed: _sendVerificationCode,
)
: RaisedButton(
child: Text('Send Verification Code'),
onPressed: _sendVerificationCode,
),
SizedBox(height: 16.0),
TextField(
controller: _verificationCodeController,
decoration: InputDecoration(labelText: 'Verification Code'),
),
SizedBox(height: 16.0),
RaisedButton(
child: Text('Login'),
onPressed: _login,
),
],
),
),
);
}
}
Bing
/// 用dart实现一个登录界面，有两种模式，验证码登录和密码登录 验证码登录时有两个输入项，手机号和验证码，输入的手机号合法后才可发送验证码，60秒内只可以发送一次验证码
import 'package:flutter/material.dart';
class LoginPage extends StatefulWidget {
@override
_LoginPageState createState() => _LoginPageState();
}
class _LoginPageState extends State<LoginPage> {
final _phoneController = TextEditingController();
final _codeController = TextEditingController();
bool _canSendCode = true;
String _sendCodeButtonText = '发送验证码';
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('登录'),
),
body: Column(
children: [
TextField(
controller: _phoneController,
decoration: InputDecoration(
labelText: '手机号',
),
keyboardType: TextInputType.phone,
),
TextField(
controller: _codeController,
decoration: InputDecoration(
labelText: '验证码',
),
keyboardType: TextInputType.number,
),
RaisedButton(
onPressed: _canSendCode ? _sendCode : null,
child: Text(_sendCodeButtonText),
),
],
),
);
}
void _sendCode() {
if (_isPhoneValid(_phoneController.text)) {
setState(() {
_canSendCode = false;
_sendCodeButtonText = '60秒后重新发送';
});
// 发送验证码
// ...
Future.delayed(Duration(seconds: 60), () {
setState(() {
_canSendCode = true;
_sendCodeButtonText = '发送验证码';
});
});
} else {
// 手机号不合法
// ...
}
}
bool _isPhoneValid(String phone) {
// 使用正则表达式验证手机号的合法性
// ...
return true;
}
}
套路代码
GitHub Copilot
/// 用dart 写一个model类 包含 name age city 可序列化和反序列化成json
import 'dart:convert';
class Person {
String name;
int age;
String city;
Person({required this.name, required this.age, required this.city});
factory Person.fromJson(Map<String, dynamic> json) {
return Person(
name: json['name'],
age: json['age'],
city: json['city'],
);
}
Map<String, dynamic> toJson() {
return {
'name': name,
'age': age,
'city': city,
};
}
String toString() {
return jsonEncode(toJson());
}
}
GPT3.5
/// 用dart 写一个model类 包含 name age city 可序列化和反序列化成json
import 'dart:convert';
class Person {
String name;
int age;
String city;
Person({required this.name, required this.age, required this.city});
factory Person.fromJson(String jsonString) {
Map<String, dynamic> jsonMap = json.decode(jsonString);
return Person(
name: jsonMap['name'],
age: jsonMap['age'],
city: jsonMap['city'],
);
}
String toJson() {
Map<String, dynamic> jsonMap = {
'name': name,
'age': age,
'city': city,
};
return json.encode(jsonMap);
}
}
void main() {
// 创建一个 Person 对象
Person person = Person(name: 'John Doe', age: 30, city: 'New York');
// 将 Person 对象序列化为 JSON 字符串
String jsonString = person.toJson();
print('Serialized JSON: $jsonString');
// 将 JSON 字符串反序列化为 Person 对象
Person decodedPerson = Person.fromJson(jsonString);
print('Deserialized Person:');
print('Name: ${decodedPerson.name}');
print('Age: ${decodedPerson.age}');
print('City: ${decodedPerson.city}');
}
Bard
/// Write a model class with dart, including name age city, which can be serialized and deserialized into json
import 'dart:convert';
class Person {
String name;
int age;
String city;
Person({this.name, this.age, this.city});
factory Person.fromJson(Map<String, dynamic> json) {
return Person(
name: json['name'],
age: json['age'],
city: json['city'],
);
}
Map<String, dynamic> toJson() {
return {
'name': name,
'age': age,
'city': city,
};
}
}
Bing
/// 用dart 写一个model类 包含 name age city 可序列化和反序列化成json
class UserModel {
String name;
int age;
String city;
UserModel({this.name, this.age, this.city});
// 将model对象序列化成JSON字符串
String toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['name'] = this.name;
data['age'] = this.age;
data['city'] = this.city;
return json.encode(data);
}
// 将JSON字符串反序列化成model对象
factory UserModel.fromJson(String jsonString) {
final jsonMap = json.decode(jsonString);
return UserModel(
name: jsonMap['name'],
age: jsonMap['age'],
city: jsonMap['city'],
);
}
}
- 问题修复
- 类型错误
- 未定义的变量
- 未捕捉的异常
- 未实现的接口方法
- 代码重构
- 合理的变量和函数命名
- 消除重复代码
- 简化条件语句
- 使用现代语言特性
- 改进错误处理
- 代码审查
- 可能导致运行时错误的代码
- 低质量代码
- 风格问题
- 未遵循最佳实践
- 潜在的性能问题
- UT生成
- 纯函数
- 包含UI操作
- 依赖全局变量
- 包含异步操作
- 文档编写
- 纯函数
- UI组件
问题修复
类型错误
void greet(String name) {
print('Hello, $name!');
}
void main() {
greet(123);
}
GitHub Copilot
void greet(String name) {
print('Hello, $name!');
}
void main() {
greet('123');
}
GPT3.5
void greet(String name) {
print('Hello, $name!');
}
void main() {
greet('123');
}
Bard
void greet(String name) {
print('Hello, $name!');
}
void main() {
greet(123.toString());
}
Bing
void greet(String name) {
print('Hello, $name!');
}
void main() {
greet('123');
}
未定义的变量
int calculateArea(int radius) {
return pi * radius * radius;
}
GitHub Copilot
import 'dart:math';
double calculateArea(int radius) {
return pi * radius * radius;
}
GPT3.5
import 'dart:math';
double calculateArea(int radius) {
return pi * radius * radius;
}
void main() {
int radius = 5;
double area = calculateArea(radius);
print('The area is: $area');
}
Bard
import 'dart:math';
int calculateArea(int radius) {
return pi * radius * radius;
}
Bing
import 'dart:math';
double calculateArea(int radius) {
return pi * radius * radius;
}
未捕捉的异常
void fetchData() {
final dio = Dio();
final response = await dio.get('https://api.example.com/data');
final data = response.data;
print('$data');
}
GitHub Copilot
import 'package:dio/dio.dart';
Future<void> fetchData() async {
final dio = Dio();
final response = await dio.get('https://api.example.com/data');
final data = response.data;
print('$data');
}
GPT3.5
import 'package:dio/dio.dart';
Future<void> fetchData() async {
try {
final dio = Dio();
final response = await dio.get('https://api.example.com/data');
final data = response.data;
print(data);
} catch (e) {
print('Error: $e');
}
}
void main() {
fetchData();
}
Bard
import 'package:dio/dio.dart';
Future<Map<String, dynamic>> fetchData() async {
final dio = Dio();
final response = await dio.get('https://api.example.com/data');
return response.data;
}
void main() {
Map<String, dynamic> data = await fetchData();
print(data);
}
Bing
import 'package:dio/dio.dart';
Future<void> fetchData() async {
final dio = Dio();
final response = await dio.get('https://api.example.com/data');
final data = response.data;
print('$data');
}
未实现的接口方法
abstract class Animal {
void eat();
void sleep();
}
class Dog implements Animal {
eat() {
print('Dog is eating...');
}
}
GitHub Copilot
abstract class Animal {
void eat();
void sleep();
}
class Dog implements Animal {
@override
void eat() {
print('Dog is eating...');
}
@override
void sleep() {
print('Dog is sleeping...');
}
}
GPT3.5
abstract class Animal {
void eat();
void sleep();
}
class Dog implements Animal {
@override
void eat() {
print('Dog is eating...');
}
@override
void sleep() {
print('Dog is sleeping...');
}
}
Bard
abstract class Animal {
void eat();
void sleep();
}
class Dog extends Animal {
@override
void eat() {
print('Dog is eating...');
}
}
Bing
abstract class Animal {
void eat();
void sleep();
}
class Dog implements Animal {
@override
void eat() {
print('Dog is eating...');
}
@override
void sleep() {
print('Dog is sleeping...');
}
}
代码重构
合理的变量和函数命名
int fn(int a,int b){
return a + b;
}
GitHub Copilot
int sum(int a, int b) {
return a + b;
}
GPT3.5
int calculateSum(int a, int b) {
return a + b;
}
Bard
int add(int a, int b) {
return a + b;
}
Bing
int add(int a, int b) {
return a + b;
}
消除重复代码
void printInvoice(invoice) {
print('Invoice Number: ${invoice.number}');
print('Invoice Date: ${invoice.date}');
print('Invoice Amount: ${invoice.amount}');
}
void printReceipt(receipt) {
print('Receipt Number: ${receipt.number}');
print('Receipt Date: ${receipt.date}');
print('Receipt Amount: ${receipt.amount}');
}
GitHub Copilot
void printInvoice(Map<String, dynamic> invoice) {
print('Invoice Number: ${invoice['number']}');
print('Invoice Date: ${invoice['date']}');
print('Invoice Amount: ${invoice['amount']}');
}
void printReceipt(Map<String, dynamic> receipt) {
print('Receipt Number: ${receipt['number']}');
print('Receipt Date: ${receipt['date']}');
print('Receipt Amount: ${receipt['amount']}');
}
GPT3.5
void printInvoice(dynamic invoice) {
final number = invoice.number;
final date = invoice.date;
final amount = invoice.amount;
print('Invoice Number: $number');
print('Invoice Date: $date');
print('Invoice Amount: $amount');
}
void printReceipt(dynamic receipt) {
final number = receipt.number;
final date = receipt.date;
final amount = receipt.amount;
print('Receipt Number: $number');
print('Receipt Date: $date');
print('Receipt Amount: $amount');
}
Bard
void printInvoiceOrReceipt(document) {
print('Document Number: ${document.number}');
print('Document Date: ${document.date}');
print('Document Amount: ${document.amount}');
}
Bing
void printDocument(document) {
print('Document Number: ${document.number}');
print('Document Date: ${document.date}');
print('Document Amount: ${document.amount}');
}
简化条件语句
void doSomething(user) {
if ((user.isLoggedIn && user.hasPermission) || user.isAdmin || user.isOwner) {
// do something...
}
}
GitHub Copilot
void doSomething(User user) {
if (user.canDoSomething()) {
// do something...
}
}
class User {
bool isLoggedIn = false;
bool hasPermission = false;
bool isAdmin = false;
bool isOwner = false;
bool canDoSomething() {
return (isLoggedIn && hasPermission) || isAdmin || isOwner;
}
}
GPT3.5
void doSomething(User user) {
final isLoggedIn = user.isLoggedIn;
final hasPermission = user.hasPermission;
final isAdmin = user.isAdmin;
final isOwner = user.isOwner;
if ((isLoggedIn && hasPermission) || isAdmin || isOwner) {
// do something...
}
}
Bard
void doSomething(User user) {
if (user.isLoggedIn && user.hasPermission || user.isAdmin || user.isOwner) {
// do something...
}
}
Bing
bool canDoSomething(user) {
return (user.isLoggedIn && user.hasPermission) || user.isAdmin || user.isOwner;
}
void doSomething(user) {
if (canDoSomething(user)) {
// do something...
}
}
潜在的性能问题
for (var i = 0; i < arr.length; i++) {
for (var j = 0; j < arr.length; j++) {
for (var k = 0; k < arr.length; k++) {
// do something...
}
}
}
GitHub Copilot
for (var i = 0; i < arr.length; i++) {
for (var j = 0; j < arr.length; j++) {
for (var k = j + 1; k < arr.length; k++) {
// do something...
}
}
}
GPT3.5
final length = arr.length;
for (var i = 0; i < length; i++) {
for (var j = 0; j < length; j++) {
for (var k = 0; k < length; k++) {
// do something...
}
}
}
Bard
for (var i = 0; i < arr.length; i++) {
for (var j = i + 1; j < arr.length; j++) {
for (var k = j + 1; k < arr.length; k++) {
// do something...
}
}
}
void main() {
List<int> arr = [1, 2, 3, 4, 5];
doSomething(arr);
}
Bing
您好！这段代码中使用了三层嵌套的循环来遍历一个数组。这种做法的时间复杂度为O(n^3)，其中n为数组的长度。如果数组的长度很大，这段代码的运行时间可能会非常长。
要优化这段代码，您需要根据具体情况来确定最佳方案。如果您能够提供更多关于这段代码的背景信息和目的，我将能够为您提供更具体的建议。
例如，如果您希望在数组中查找某个特定的元素，您可以使用更高效的算法，如二分查找。如果您希望对数组进行排序，您可以使用更高效的排序算法，如快速排序或归并排序。
希望这个解释能够帮助您理解如何优化这段代码。如果您需要更多帮助，欢迎继续提问。
UT生成
纯函数
import 'dart:convert';
import 'dart:typed_data';
Blob dataURItoBlob(String dataURI) {
final byteString = utf8.decode(base64.decode(dataURI.split(',')[1]));
final mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0];
final ab = Uint8List(byteString.length).buffer;
final ia = Uint8List.view(ab);
for (var i = 0; i < byteString.length; i++) {
ia[i] = byteString.codeUnitAt(i);
}
return Blob([ab], mimeString);
}
GitHub Copilot
import 'package:test/test.dart';
import 'package:example/test.dart';
void main() {
group('dataURItoBlob', () {
test('should convert a data URI to a Blob', () {
final dataURI =
'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUA'
'AAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO'
'9TXL0Y4OHwAAAABJRU5ErkJggg==';
final blob = dataURItoBlob(dataURI);
expect(blob.type, equals('image/png'));
expect(blob.size, equals(68));
});
});
}
GPT3.5
import 'package:test/test.dart';
void main() {
test('Convert Data URI to Bytes', () {
final dataURI = 'data:image/png;base64,iVBORw0KGg...';
final expectedBytes = [105, 86, 66, 79, 82, 119, 48, 75, 71, 103, ...]; // 以实际数据为准
final bytes = dataURItoBytes(dataURI);
expect(bytes, equals(expectedBytes));
});
}
Bard
import 'dart:convert';
import 'dart:typed_data';
import 'package:test/test.dart';
void main() {
test('dataURItoBlob', () {
String dataURI = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQImWNgYGBgAAAABQABh6FCQAAAAB';
Blob blob = dataURItoBlob(dataURI);
expect(blob.type, equals('image/png'));
expect(blob.size, equals(1305));
Uint8List bytes = blob.bytes;
expect(bytes.length, equals(1305));
});
}
Bing
import 'dart:convert';
import 'dart:typed_data';
import 'package:test/test.dart';
void main() {
test('dataURItoBlob should convert data URI to Blob', () {
final dataURI =
'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==';
final blob = dataURItoBlob(dataURI);
expect(blob.type, equals('image/png'));
expect(blob.size, equals(85));
});
}
包含UI操作
import 'package:flutter/material.dart';
void main() => runApp(CounterApp());
class CounterApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Counter App',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: CounterScreen(),
);
}
}
class CounterScreen extends StatefulWidget {
@override
_CounterScreenState createState() => _CounterScreenState();
}
class _CounterScreenState extends State<CounterScreen> {
int _counter = 0;
void _incrementCounter() {
setState(() {
_counter++;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Counter App'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
'Counter:',
style: TextStyle(fontSize: 24),
),
Text(
'$_counter',
style: TextStyle(fontSize: 48, fontWeight: FontWeight.bold),
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
}
GitHub Copilot
import 'package:flutter_test/flutter_test.dart'; import 'package:example/main.dart';
void main() {
test('Counter value should increment', () {
final counterScreen = CounterScreen(); expect(counterScreen._counter, 0); counterScreen._incrementCounter(); expect(counterScreen._counter, 1); });
}
GPT3.5
import 'package:flutter_test/flutter_test.dart';
import 'package:your_app_name/counter_screen.dart';
void main() {
group('CounterScreen', () {
testWidgets('should display initial counter value of 0', (WidgetTester tester) async {
await tester.pumpWidget(CounterScreen());
expect(find.text('0'), findsOneWidget);
});
testWidgets('should increment counter when FloatingActionButton is pressed', (WidgetTester tester) async {
await tester.pumpWidget(CounterScreen());
// Find FloatingActionButton
final incrementButton = find.byType(FloatingActionButton);
// Tap the FloatingActionButton twice
await tester.tap(incrementButton);
await tester.tap(incrementButton);
await tester.pump();
// Verify that the counter value has increased to 2
expect(find.text('2'), findsOneWidget);
});
});
}
Bard
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
testWidgets('CounterApp increments the counter', (WidgetTester tester) async {
// Build the app
await tester.pumpWidget(CounterApp());
// Check that the counter starts at 0
expect(find.text('Counter:'), findsOneWidget);
expect(find.text('0'), findsOneWidget);
// Tap the button to increment the counter
await tester.tap(find.widgetWithIcon(Icons.add));
await tester.pump();
// Check that the counter has incremented
expect(find.text('Counter:'), findsOneWidget);
expect(find.text('1'), findsOneWidget);
});
}
Bing
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
testWidgets('CounterApp increments the counter', (WidgetTester tester) async {
// Build the app
await tester.pumpWidget(CounterApp());
// Check that the counter starts at 0
expect(find.text('Counter:'), findsOneWidget);
expect(find.text('0'), findsOneWidget);
// Tap the button to increment the counter
await tester.tap(find.byIcon(Icons.add));
await tester.pump();
// Check that the counter has incremented
expect(find.text('Counter:'), findsOneWidget);
expect(find.text('1'), findsOneWidget);
});
}
依赖全局变量
class GlobalData {
static GlobalData? _instance;
String? globalVariable;
GlobalData._internal();
factory GlobalData() {
if (_instance == null) {
_instance = GlobalData._internal();
}
return _instance!;
}
}
void dependentFunction() {
final globalData = GlobalData();
if (globalData.globalVariable != null) {
// 在这里使用全局变量进行操作
print(globalData.globalVariable);
} else {
print('全局变量未设置');
}
}
GitHub Copilot
import 'package:test/test.dart';
import '../lib/test.dart';
void main() {
group('GlobalData', () {
test('should create only one instance', () {
final instance1 = GlobalData();
final instance2 = GlobalData();
expect(instance1, equals(instance2));
});
test('should set and get globalVariable', () {
final globalData = GlobalData();
globalData.globalVariable = 'test';
expect(globalData.globalVariable, equals('test'));
});
});
group('dependentFunction', () {
test('should print globalVariable if set', () {
final globalData = GlobalData();
globalData.globalVariable = 'test';
expect(dependentFunction(), equals('test'));
});
test('should print "全局变量未设置" if globalVariable is null', () {
final globalData = GlobalData();
expect(dependentFunction(), equals('全局变量未设置'));
});
});
}
GPT3.5
import 'package:test/test.dart';
import 'package:example/main.dart';
void main() {
test('Dependent function should handle global variable', () {
final globalData = GlobalData();
final dependent = DependentFunction();
expect(globalData.globalVariable, isNull);
expect(dependent.process(), equals('Global variable not set'));
globalData.globalVariable = 'Hello World';
expect(globalData.globalVariable, equals('Hello World'));
expect(dependent.process(), equals('Processing: Hello World'));
});
}
Bard
import 'package:flutter_test/flutter_test.dart';
void main() {
test('GlobalData initializes the global variable', () {
// Create a new instance of GlobalData
final globalData = GlobalData();
// Check that the global variable is not null
expect(globalData.globalVariable, isNull);
// Set the global variable
globalData.globalVariable = 'Hello, world!';
// Check that the global variable is not null
expect(globalData.globalVariable, isNotNull);
expect(globalData.globalVariable, equals('Hello, world!'));
});
}
Bing
import 'package:test/test.dart';
void main() {
test('dependentFunction should print the value of globalVariable', () {
final globalData = GlobalData();
globalData.globalVariable = 'test';
expect(() => dependentFunction(), prints('test\n'));
});
test('dependentFunction should print "not settings" if globalVariable is null', () {
final globalData = GlobalData();
globalData.globalVariable = null;
expect(() => dependentFunction(), prints('not settings\n'));
});
}
class GlobalData {
static GlobalData? _instance;
String? globalVariable;
GlobalData._internal();
factory GlobalData() {
if (_instance == null) {
_instance = GlobalData._internal();
}
return _instance!;
}
}
void dependentFunction() {
final globalData = GlobalData();
if (globalData.globalVariable != null) {
print(globalData.globalVariable);
} else {
print('not settings');
}
}
包含异步操作
Future<void> fetchData() async {
try {
// 模拟异步获取数据的操作
await Future.delayed(Duration(seconds: 2));
// 异步操作完成后的逻辑
print('Data fetched successfully!');
} catch (error) {
// 异常处理逻辑
print('Error occurred while fetching data: $error');
}
}
GitHub Copilot
import 'package:test/test.dart';
import 'package:example/test.dart';
void main() {
group('fetchData', () {
test('should fetch data successfully', () async {
await expectLater(fetchData(), completes);
});
test('should throw an error if fetching data fails', () async {
final errorMessage = 'Failed to fetch data';
expect(() => fetchData(errorMessage), throwsA(errorMessage));
});
});
}
GPT3.5
import 'package:test/test.dart';
Future<void> main() async {
group('fetchData', () {
test('should fetch data successfully', () async {
// Arrange
final expectedMessage = 'Data fetched successfully!';
// Act
await fetchData();
// Assert
expect(
testOutputs.last,
equals(expectedMessage),
reason: 'Expected message: $expectedMessage',
);
});
test('should handle error while fetching data', () async {
// Arrange
final expectedErrorMessage = 'Error occurred while fetching data: Test error';
// Act
await fetchDataWithError();
// Assert
expect(
testOutputs.last,
equals(expectedErrorMessage),
reason: 'Expected error message: $expectedErrorMessage',
);
});
});
}
final testOutputs = <String>[];
Future<void> fetchData() async {
try {
// 模拟异步获取数据的操作
await Future.delayed(Duration(seconds: 2));
// 异步操作完成后的逻辑
testOutputs.add('Data fetched successfully!');
} catch (error) {
// 异常处理逻辑
testOutputs.add('Error occurred while fetching data: $error');
}
}
Future<void> fetchDataWithError() async {
throw 'Test error';
}
Bard
import 'package:flutter_test/flutter_test.dart';
void main() {
test('fetchData fetches data successfully', () async {
// Create a mock of the Future class
final mockFuture = MockFuture<void>();
// Stub the mockFuture to return a value after 2 seconds
when(mockFuture.then()).thenAnswer((_) async => {});
// Call the fetchData() function
await fetchData(mockFuture);
// Verify that the mockFuture was called
verify(mockFuture.then());
// Verify that the print statement was called
verify(print('Data fetched successfully!'));
});
test('fetchData throws an error', () async {
// Create a mock of the Future class
final mockFuture = MockFuture<void>();
// Stub the mockFuture to throw an error
when(mockFuture.then()).thenThrow(Exception('Error'));
// Call the fetchData() function
try {
await fetchData(mockFuture);
} catch (error) {
// Verify that the error is correct
expect(error, isA<Exception>());
expect(error.message, equals('Error'));
}
// Verify that the print statement was not called
verifyNever(print('Data fetched successfully!'));
});
}
Bing
import 'dart:async';
import 'package:test/test.dart';
void main() {
test('fetchData should print "Data fetched successfully!"', () async {
expect(() async => await fetchData(), prints('Data fetched successfully!\n'));
});
}
Future<void> fetchData() async {
try {
// 模拟异步获取数据的操作
await Future.delayed(Duration(seconds: 2));
// 异步操作完成后的逻辑
print('Data fetched successfully!');
} catch (error) {
// 异常处理逻辑
print('Error occurred while fetching data: $error');
}
}
文档编写
纯函数
import 'dart:convert';
import 'dart:typed_data';
Blob dataURItoBlob(String dataURI) {
final byteString = utf8.decode(base64.decode(dataURI.split(',')[1]));
final mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0];
final ab = Uint8List(byteString.length).buffer;
final ia = Uint8List.view(ab);
for (var i = 0; i < byteString.length; i++) {
ia[i] = byteString.codeUnitAt(i);
}
return Blob([ab], mimeString);
}
GitHub Copilot
这是一个将数据URI转换为Blob对象的函数。它接受一个数据URI作为参数，并返回一个Blob对象。在函数内部，它首先将数据URI分解为字节字符串和mime字符串。然后，它将字节字符串解码为Uint8List，并将其存储在ArrayBuffer中。最后，它将ArrayBuffer转换为Blob对象，并将mime字符串作为参数传递给Blob构造函数。
GPT3.5
dataURItoBlob 函数用于将 Data URI 转换为 Blob 对象。以下是对该函数的翻译文档：
- 函数说明 将 Data URI 转换为 Blob 对象。
Blob dataURItoBlob(String dataURI)
-
dataURI: 要转换的 Data URI 字符串。 -
返回值 返回转换后的 Blob 对象。
-
参数
-
dataURI: Data URI 字符串，包含数据的编码信息和 MIME 类型。 -
示例
final dataURI = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUA'
'AAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO'
'9TXL0Y4OHwAAAABJRU5ErkJggg==';
final blob = dataURItoBlob(dataURI);
print(blob.type); // 输出：image/png
print(blob.size); // 输出：68
注意：需要在使用之前导入 dart:convert 和 dart:typed_data 包。
希望这个文档对你有帮助！
Bard
The dataURItoBlob() function converts a data URI string to a Blob object. A data URI string is a string that represents a piece of binary data in a URL-safe format. The dataURItoBlob() function takes a data URI string as input and returns a Blob object. The Blob object can then be used to store the data or to display it in an image.
The dataURItoBlob() function works by first decoding the base64-encoded data in the data URI string. The decoded data is then converted to a Uint8List. The Uint8List is then wrapped in a Blob object and returned.
The following code shows how to use the dataURItoBlob() function:
import 'dart:convert'; import 'dart:typed_data';
void main() { String dataURI = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQImWNgYGBgAAAABQABh6FCQAAAAB';
Blob blob = dataURItoBlob(dataURI); }
This code will create a Blob object from the data in the dataURI string. The Blob object can then be used to store the data or to display it in an image.
The dataURItoBlob() function is a useful function for converting data URI strings to Blob objects. This can be useful for storing data in a URL-safe format or for displaying data in an image.
Bing
dataURItoBlob函数用于将数据URI转换为Blob对象。它接受一个字符串类型的参数dataURI，该参数表示要转换的数据URI。
函数首先使用split方法将数据URI分割为两部分：MIME类型和Base64编码的数据。然后，使用base64.decode方法将Base64编码的数据解码为字节数组，再使用utf8.decode方法将字节数组转换为字符串。
接下来，函数创建了一个Uint8List对象，并使用buffer属性获取其底层的字节缓冲区。然后，使用Uint8List.view方法创建一个新的Uint8List对象，该对象与原始的字节缓冲区共享内存。
接下来，函数使用循环将解码后的字符串中的每个字符的Unicode码点复制到新创建的Uint8List对象中。最后，函数使用Blob构造函数创建一个新的Blob对象，并将其返回。
下面是一个简单的示例，演示了如何使用dataURItoBlob函数将数据URI转换为Blob对象：
final dataURI =
'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==';
final blob = dataURItoBlob(dataURI);
print(blob.type); // 输出：image/png
print(blob.size); // 输出：85
在上面的代码中，我们首先创建了一个包含PNG图像数据的数据URI，然后调用dataURItoBlob函数将数据URI转换为一个Blob对象。最后，我们打印出了转换后的Blob对象的类型和大小。
dataURItoBlob函数提供了一种简单的方法，用于将数据URI转换为Blob对象。您可以在需要处理数据URI的地方使用这个函数。
希望这个文档能够帮助您理解dataURItoBlob函数的功能和用法。如果您需要更多帮助，欢迎继续提问。
UI组件
import 'package:flutter/material.dart';
void main() => runApp(CounterApp());
class CounterApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Counter App',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: CounterScreen(),
);
}
}
class CounterScreen extends StatefulWidget {
@override
_CounterScreenState createState() => _CounterScreenState();
}
class _CounterScreenState extends State<CounterScreen> {
int _counter = 0;
void _incrementCounter() {
setState(() {
_counter++;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Counter App'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
'Counter:',
style: TextStyle(fontSize: 24),
),
Text(
'$_counter',
style: TextStyle(fontSize: 48, fontWeight: FontWeight.bold),
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
}
GitHub Copilot
This file contains the implementation of a simple Flutter app that displays a counter.
The app consists of two main components: a [CounterApp] widget and a [CounterScreen] widget.
The [CounterApp] widget is a [StatelessWidget] that sets up the app's theme and initial screen.
The [CounterScreen] widget is a [StatefulWidget] that manages the app's state and displays the counter.
The counter can be incremented by tapping the floating action button.
GPT3.5
下面是将Flutter计数器应用程序转换为文档的格式化版本：
- Counter App
这是一个简单的计数器应用程序，允许用户递增一个计数器的值。
- 使用方法
- 在Flutter环境中创建一个新的Flutter应用程序。
- 将以下代码复制并替换
lib/main.dart文件中的内容。 - 运行应用程序，您将看到一个具有计数器和增加按钮的界面。
- 每次点击增加按钮时，计数器的值将增加。
- 代码
import 'package:flutter/material.dart';
void main() => runApp(CounterApp());
class CounterApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Counter App',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: CounterScreen(),
);
}
}
class CounterScreen extends StatefulWidget {
@override
_CounterScreenState createState() => _CounterScreenState();
}
class _CounterScreenState extends State<CounterScreen> {
int _counter = 0;
void _incrementCounter() {
setState(() {
_counter++;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Counter App'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
'Counter:',
style: TextStyle(fontSize: 24),
),
Text(
'$_counter',
style: TextStyle(fontSize: 48, fontWeight: FontWeight.bold),
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
}
-
说明
-
CounterApp是应用程序的入口点，它使用MaterialApp作为根组件，并设置应用程序的主题和主页。 -
CounterScreen是一个有状态的小部件，用于显示计数器和增加按钮。 -
_CounterScreenState维护计数器的当前值，并通过调用setState方法来更新界面。 -
界面包含一个
AppBar，显示应用程序的标题；一个居中的Column小部件，包含一个用于显示文本标签和计数器值的Text小部件；以及一个浮动操作按钮(FloatingActionButton)，用于增加计数器的值。 -
每次点击浮动操作按钮时，将调用
_incrementCounter方法，该方法通过调用setState方法来更新计数器的值，并重新构建界面以反映新的值。
希望这个格式化的文档对您有所帮助！
Bard
The CounterApp class is a Flutter class that creates a simple counter app. The app has a counter that can be incremented by pressing the floating action button. The counter is displayed in the center of the app.
The CounterApp class extends the StatelessWidget class. This means that the class does not have any state. The state of the counter is managed by the _CounterScreenState class.
The CounterApp class has a build() method that returns a MaterialApp widget. The MaterialApp widget is the root widget of the app. The MaterialApp widget has a title property that is set to "Counter App". The MaterialApp widget also has a theme property that is set to a ThemeData object with the primarySwatch property set to Colors.blue.
The CounterApp class also has a home property that is set to a CounterScreen widget. The CounterScreen widget is the home screen of the app.
The CounterScreen class is a Flutter class that creates a screen with a counter. The counter is displayed in the center of the screen. The counter can be incremented by pressing the floating action button.
The CounterScreen class extends the StatefulWidget class. This means that the class has state. The state of the counter is stored in the _counter property.
The CounterScreen class has a build() method that returns a Scaffold widget. The Scaffold widget is a layout widget that provides a basic structure for an app. The Scaffold widget has an appBar property that is set to an AppBar widget with the title property set to "Counter App". The Scaffold widget also has a body property that is set to a Center widget with a Column widget as its child. The Column widget has two children: a Text widget with the text "Counter:" and a Text widget with the value of the counter.
The CounterScreen class also has a _incrementCounter() method that increments the counter by 1. The _incrementCounter() method is called when the floating action button is pressed.
The CounterApp class is a simple Flutter class that creates a simple counter app. The app has a counter that can be incremented by pressing the floating action button. The counter is displayed in the center of the app.
Bing
这段代码演示了如何使用Flutter框架构建一个简单的计数器应用程序。应用程序包含两个类：CounterApp和CounterScreen。
CounterApp类继承自StatelessWidget，它是应用程序的根组件。在build方法中，它创建了一个MaterialApp组件，并设置了应用程序的标题、主题和主页。
CounterScreen类继承自StatefulWidget，它表示应用程序的主页。它包含一个名为_CounterScreenState的内部类，该类继承自State<CounterScreen>，用于管理应用程序的状态。
在_CounterScreenState类中，我们定义了一个名为_counter的整数变量，用于存储计数器的当前值。我们还定义了一个名为_incrementCounter的方法，该方法使用setState方法来递增计数器的值。
在build方法中，我们创建了一个包含若干组件的界面。首先，我们创建了一个Scaffold组件，并设置了应用程序栏的标题。然后，在界面的中央，我们创建了一个垂直排列的列（Column），并在其中添加了两个文本（Text）组件，分别显示“Counter:”和计数器的当前值。最后，我们创建了一个浮动操作按钮（FloatingActionButton），并设置了按钮的图标、提示文本和点击事件处理函数。
当用户点击浮动操作按钮时，会调用按钮的点击事件处理函数（即上面定义的_incrementCounter方法）。在这个方法中，我们使用setState方法来递增计数器的值，并通知框架重建界面。
这就是这段代码的基本功能和工作原理。它演示了如何使用Flutter框架构建一个简单的计数器应用程序，包括如何定义组件、管理状态、处理用户交互等。
希望这个文档能够帮助您理解这段代码的功能和用法。如果您需要更多帮助，欢迎继续提问。
技术方案
- 关于JS 与 webview_flutter交互
GitHub Copilot
在Flutter中，我们可以使用webview_flutter插件来嵌入Web视图。这个插件提供了一个WebView Widget，它可以在Flutter应用程序中显示Web内容。在某些情况下，我们可能需要在WebView中加载JavaScript，并与Flutter应用程序进行交互。下面是一些技术方案，可以帮助我们实现这个目标。
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使用JavaScriptChannel JavaScriptChannel是一个Flutter类，它允许我们在WebView中注册一个JavaScript函数，该函数可以与Flutter应用程序进行交互。在Flutter中，我们可以使用WebView的onWebViewCreated回调来获取WebViewController。然后，我们可以使用JavaScriptChannel的setMethodCallHandler方法来注册一个JavaScript函数，该函数可以在WebView中调用。在Flutter中，我们可以使用invokeMethod方法来调用JavaScript函数。
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使用evalJavascript WebView提供了一个evalJavascript方法，它可以在WebView中执行JavaScript代码。在Flutter中，我们可以使用WebView的onWebViewCreated回调来获取WebViewController。然后，我们可以使用evalJavascript方法来执行JavaScript代码。在JavaScript代码中，我们可以使用window.flutter_inject方法来调用Flutter应用程序中的方法。在Flutter中，我们可以使用WebView的onJavascriptMessage回调来接收来自JavaScript的消息。
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使用Flutter Webview Plugin Flutter Webview Plugin是一个Flutter插件，它提供了一个WebView Widget，它可以在Flutter应用程序中显示Web内容。该插件提供了一些方法，可以帮助我们实现JavaScript与Flutter应用程序之间的交互。例如，我们可以使用evaluateJavascript方法来执行JavaScript代码。我们还可以使用onStateChanged回调来接收来自WebView的状态更改事件。
总的来说，以上这些技术方案都可以帮助我们实现JavaScript与Flutter应用程序之间的交互。我们可以根据自己的需求选择适合自己的方案。无论我们选择哪种方案，我们都应该注意安全性和性能，以确保我们的应用程序能够正常运行。
GPT3.5
- JS与webview_flutter交互技术方案
在移动应用开发中，webview_flutter是一个常用的插件，它提供了在Flutter应用中嵌入Web视图的功能。通过使用webview_flutter，我们可以加载网页内容、展示Web应用、实现混合开发等。
与Web视图进行交互是很常见的需求，可以通过JS与webview_flutter之间进行通信，实现数据传递和方法调用。下面是一种常见的技术方案，用于实现JS与webview_flutter的交互。
- 步骤
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加载网页内容：使用webview_flutter加载需要展示的网页内容。可以通过指定URL加载网页，或者使用
WebView.initialUrl属性加载本地HTML文件。 -
JS调用Flutter代码：在webview_flutter中，可以通过注入JavaScript代码来调用Flutter的方法。通过使用
JavascriptChannel，我们可以在Flutter中注册一个JavaScript通道，JavaScript可以通过该通道向Flutter发送消息。// 在webview_flutter中注册一个JavaScript通道 WebView( ... javascriptChannels: <JavascriptChannel>[ JavascriptChannel( name: 'MyChannel', onMessageReceived: (JavascriptMessage message) { // 处理JavaScript发来的消息 String jsData = message.message; // 调用Flutter方法 // ... }, ), ].toSet(), ... ) -
Flutter代码调用JS：在Flutter中，可以通过webview_flutter的
WebViewController执行JavaScript代码。我们可以通过WebViewController.evaluateJavascript方法执行任意的JavaScript代码。// 获取WebViewController WebViewController _controller; // 调用JavaScript代码 _controller.evaluateJavascript('your javascript code'); -
传递数据：通过JavaScript和Flutter之间的通信，可以传递数据。可以使用JSON格式在两者之间传递数据。在JavaScript中，可以使用
JSON.stringify将数据转换为JSON字符串，在Flutter中，可以使用jsonEncode将数据转换为JSON字符串。// JavaScript中将数据转换为JSON字符串 var jsonData = JSON.stringify(data); // Flutter中将数据转换为JSON字符串 String jsonString = jsonEncode(data);在JavaScript中，可以使用
JSON.parse将JSON字符串转换为JavaScript对象；在Flutter中，可以使用jsonDecode将JSON字符串转换为Dart对象。// JavaScript中将JSON字符串转换为JavaScript对象 var data = JSON.parse(jsonData); // Flutter中将JSON字符串转换为Dart对象 var data = jsonDecode(jsonString);
以上是一种常见的JS与webview_flutter交互的技术方案。通过使用JavaScript通道和WebViewController，我们可以实现双向通信，从而在JS和Flutter之间传递数据和调用方法。这种技术方案使得在webview_flutter中嵌入Web内容并与Flutter应用进行交互变得更加灵活和强大。
希望这个技术
方案对您在JS与webview_flutter交互方面的开发有所帮助！
Bard
The webview_flutter plugin allows Flutter apps to display web content in a native view. This plugin provides a bridge between Dart and JavaScript, which allows the two languages to interact with each other.
To interact with JS from Flutter, you can use the JavascriptChannel class. The JavascriptChannel class provides a way to send messages to and from JavaScript. You can use the JavascriptChannel class to call JavaScript functions, pass data to JavaScript, and receive data from JavaScript.
To call a JavaScript function from Flutter, you can use the invokeMethod() method of the JavascriptChannel class. The invokeMethod() method takes the name of the JavaScript function as its first argument and the arguments to the function as its remaining arguments.
For example, the following code calls the alert() function from JavaScript:
Code snippet
final javascriptChannel = JavascriptChannel(
name: 'myJavascriptChannel',
onMessageReceived: (message) {
print(message);
},
);
webView.addJavascriptChannel(javascriptChannel);
javascriptChannel.invokeMethod('alert', ['Hello, world!']);
This code will call the alert() function from JavaScript and pass the string "Hello, world!" as an argument. The alert() function will then display an alert dialog with the message "Hello, world!".
To pass data to JavaScript, you can use the postMessage() method of the JavascriptChannel class. The postMessage() method takes the data to be passed to JavaScript as its first argument.
For example, the following code passes the number 10 to JavaScript:
Code snippet
final javascriptChannel = JavascriptChannel(
name: 'myJavascriptChannel',
onMessageReceived: (message) {
print(message);
},
);
webView.addJavascriptChannel(javascriptChannel);
javascriptChannel.postMessage(10);
This code will pass the number 10 to JavaScript. JavaScript can then access the number 10 by using the window.myJavascriptChannel.data property.
To receive data from JavaScript, you can use the onMessageReceived() callback of the JavascriptChannel class. The onMessageReceived() callback will be called when JavaScript sends a message to Flutter.
For example, the following code defines a callback that will be called when JavaScript sends a message to Flutter:
Code snippet
final javascriptChannel = JavascriptChannel(
name: 'myJavascriptChannel',
onMessageReceived: (message) {
print(message);
},
);
webView.addJavascriptChannel(javascriptChannel);
When JavaScript sends a message to Flutter, the onMessageReceived() callback will be called and the message will be passed to the callback as its only argument.
The webview_flutter plugin provides a powerful way to interact with JS from Flutter. This plugin can be used to call JavaScript functions, pass data to JavaScript, and receive data from JavaScript.
Bing
在Flutter应用程序中，您可以使用webview_flutter插件来嵌入一个WebView组件，用于显示网页内容。此外，您还可以使用JavaScript与WebView组件进行交互，以实现更丰富的功能。
下面是一个简单的技术方案，介绍了如何在Flutter应用程序中使用webview_flutter插件与JavaScript进行交互。
首先，您需要在Flutter应用程序中安装webview_flutter插件。您可以在pubspec.yaml文件中添加如下依赖项：
dependencies:
webview_flutter: ^2.3.1
然后，您可以在应用程序中创建一个WebView组件，并使用initialUrl属性指定要加载的网页URL。例如：
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
class WebViewScreen extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('WebView Demo'),
),
body: WebView(
initialUrl: 'https://example.com',
),
);
}
}
接下来，您可以使用WebView组件的javascriptMode属性来启用JavaScript支持。例如：
WebView(
initialUrl: 'https://example.com',
javascriptMode: JavascriptMode.unrestricted,
)
现在，您可以在网页中使用JavaScript代码了。但是，如果您希望Flutter应用程序与网页中的JavaScript代码进行交互，您还需要使用JavascriptChannel类来定义一个JavaScript通道。
例如，下面的代码演示了如何定义一个名为MessageHandler的JavaScript通道，并在网页中调用它：
WebView(
initialUrl: 'https://example.com',
javascriptMode: JavascriptMode.unrestricted,
javascriptChannels: {
JavascriptChannel(
name: 'MessageHandler',
onMessageReceived: (JavascriptMessage message) {
// 处理从网页中接收到的消息
print('Received message from web page: ${message.message}');
},
),
},
)
在上面的代码中，我们定义了一个名为MessageHandler的JavaScript通道，并指定了当从网页中接收到消息时调用的回调函数。在这个回调函数中，我们可以处理从网页中接收到的消息。
最后，在网页中，您可以使用下面的JavaScript代码来向Flutter应用程序发送消息：
window.MessageHandler.postMessage('Hello from web page!');
在上面的代码中，我们使用了window.MessageHandler.postMessage方法来向Flutter应用程序发送一条消息。当Flutter应用程序接收到这条消息时，它会调用上面定义的回调函数来处理这条消息。
这就是一个简单的技术方案，介绍了如何在Flutter应用程序中使用webview_flutter插件与JavaScript进行交互。通过使用JavaScript通道，您可以实现Flutter应用程序与网页之间的双向通信。
希望这个技术方案能够帮助您理解如何在Flutter应用程序中与JavaScript进行交互。如果您需要更多帮助，欢迎继续提问。
评测总结
- 代码生成
- 生成函数（都不错，Bard 优点为最新代码）
- 生成API调用 （都能用，不过需要人工审核下，GPT3.5 优点是加了异常捕捉）
- 类型注释（都有注释，Bing 优点是精确注释）
- UI组件（都不错，需要人工校验，补下其余代码）
- 套路代码（都可以拿来直接用，特别是用来写json类，非常方便）
- 问题修复
- 类型错误（都可以识别并解决）
- 未定义的变量（都能识别，不够Bard 没有解决int和double的问题）
- 未捕捉的异常（ 只有GPT3.5加了try catch）
- 未实现的接口方法（除了Bard 其他都补了实现）
- 代码重构
- 合理的变量和函数命名（都可以重命名，不过GPT3.5 补的最优）
- 消除重复代码（Bard/Bing 去除了重复代码）
- 简化条件语句 （都没啥简化）
- 潜在的性能问题（bing给了说明，GPT3.5微优化）
- UT生成
- 纯函数（都没啥问题）
- 包含UI操作（都没啥问题）
- 依赖全局变量（都没啥问题）
- 包含异步操作（都没啥问题）
- 文档编写
- 纯函数（GPT3.5写的最好，生成的是md格式）
- UI组件（GPT3.5写的最好，生成的是md格式）
- 技术方案（GPT3.5写的最好，生成的是md格式）
个人结论
- GitHub Copilot
- 使用vscode 的哥可以冲，不过100美刀/年，可以免费用1个月
- GPT-3.5
- 如果有钱直接上GPT-4，否则的话GPT-3.5也想当不错，综合能力出色。唯一缺点就是不是最新的。
- Bard
- 优点最新的，缺点英文的，总体感觉没GPT-3.5舒服，偶尔搜下新库的代码
- Bing
- 免费，一天可以用30次/每个号，注释挺惊艳，不过有时候代码过长可能需要不停的让它，继续
综上，小弟更倾向于GPT-3.5/GPT-4，其他都是辅助
参考资料
-
GitHub Copilot:
- 官方文档: GitHub Copilot
- GitHub Copilot 是一款由 OpenAI 开发的人工智能代码助手，它使用了类似 GPT-3.5 的语言模型，可以为开发者提供代码补全、自动完成和建议等功能。
-
GPT-3.5:
- OpenAI Blog: GPT-3.5: Language Models are Few-Shot Learners
- GPT-3.5 是 OpenAI 开发的基于 GPT-3 架构的一种语言模型。它具有强大的自然语言处理和生成能力，可以用于文本生成、对话模型等各种任务。
-
Bard:
- GitHub 仓库: Bard
- Bard 是一个开源的基于 GPT-3.5 的代码生成工具，它可以根据给定的描述生成相应的代码。Bard 主要用于自动化软件工程领域的任务，如根据自然语言描述生成程序代码。
-
Bing:
- Bing Search Services: Bing Search Services 开发人员文档
- Bing 提供了多种开发者工具和服务，包括 Bing 搜索 API、Bing Maps API、Bing 图像搜索 API 等。