Flutter财务管理插件invoiceninja的使用
Flutter财务管理插件invoiceninja的使用
描述
通过Flutter应用创建PDF发票并接受付款。
功能
- 在移动、Web和桌面Flutter应用中接受在线支付。
- 支持多种支付网关,包括Stripe、PayPal等。
- 创建专业的PDF发票。
- 包含一个自助服务客户端门户。
- 更多功能…
安装
在pubspec.yaml
文件中添加以下依赖:
dependencies:
invoiceninja: ^0.0.10
导入
在你的Dart文件中导入包:
import 'package:invoiceninja/invoiceninja.dart';
该包提供了两个主要类:
InvoiceNinja
: 支持公共“店面”路由,允许读取产品列表并创建/查找客户和发票。使用此类时访问权限受限。InvoiceNinjaAdmin
: 支持REST Admin API,使用基于令牌的安全机制。使用此类需要API令牌来访问账户。
Storefront API配置
// 配置公司密钥和URL
InvoiceNinja.configure(
'KEY', // 设置您的公司密钥或使用'KEY'进行测试
url: 'https://demo.invoiceninja.com', // 设置您自己的应用程序URL
debugEnabled: true, // 启用调试模式
);
加载产品列表
final products = await InvoiceNinja.products.load(); // 异步加载产品列表
按键查找产品
final product = await InvoiceNinja.products.findByKey('product_key'); // 根据产品键查找产品
创建/保存客户
var client = Client.forContact(email: 'test@example.com'); // 创建客户对象
client = await InvoiceNinja.clients.save(client); // 保存客户到服务器
创建/保存发票
var invoice = Invoice.forClient(client, products: [product]); // 创建发票对象
invoice = await InvoiceNinja.invoices.save(invoice); // 保存发票到服务器
显示PDF发票
launch(
'https://docs.google.com/gview?embedded=true&url=${invoice.pdfUrl}',
forceWebView: true,
); // 打开PDF发票链接
接受付款
var invoiceKey = invoice.key;
launch(invoice.url);
// ...
final invoice = await InvoiceNinja.invoices.findByKey(invoiceKey);
if (invoice.isPaid) {
// 处理已支付的发票逻辑
}
Admin API配置
// 配置API令牌和URL
InvoiceNinjaAdmin.configure(
'TOKEN', // 设置您的API令牌或使用'TOKEN'进行测试
url: 'https://demo.invoiceninja.com', // 设置您自己的应用程序URL
debugEnabled: true, // 启用调试模式
);
按电子邮件查找客户
final client = await InvoiceNinjaAdmin.clients.findByEmail(email); // 根据电子邮件查找客户
加载所有发票
final payments = await InvoiceNinjaAdmin.payments.load(); // 加载所有支付记录
加载支付列表
final payments = await InvoiceNinjaAdmin.payments.load(); // 加载支付列表
按ID查找支付
final payment = await InvoiceNinjaAdmin.payments.findById(id); // 根据ID查找支付
创建/保存发票并自动计费
var invoice = Invoice.forClient(client, products: [product]);
invoice = await InvoiceNinjaAdmin.invoices.save(invoice, action: InvoiceAction.autoBill); // 创建并保存发票,同时自动计费
示例代码
以下是完整的示例代码,展示了如何使用invoiceninja
插件创建和管理发票:
import 'package:flutter/material.dart';
import 'package:invoiceninja/invoiceninja.dart';
import 'package:invoiceninja/models/client.dart';
import 'package:invoiceninja/models/invoice.dart';
import 'package:invoiceninja/models/product.dart';
import 'package:url_launcher/url_launcher.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
[@override](/user/override)
Widget build(BuildContext context) {
return MaterialApp(
title: 'Invoice Ninja',
theme: ThemeData(
brightness: Brightness.dark,
),
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key? key}) : super(key: key);
[@override](/user/override)
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> with WidgetsBindingObserver {
List<Product> _products = [];
String _email = '';
Product? _product;
Invoice? _invoice;
[@override](/user/override)
initState() {
super.initState();
WidgetsBinding.instance.addObserver(this);
// 配置Invoice Ninja
InvoiceNinja.configure(
'KEY', // 设置您的公司密钥或使用'KEY'进行测试
url: 'https://demo.invoiceninja.com', // 设置您自己的应用程序URL
debugEnabled: true,
);
// 加载产品列表
InvoiceNinja.products.load().then((products) {
setState(() {
_products = products;
});
});
}
void _createInvoice() async {
if (_product == null) {
return;
}
// 创建并保存客户
var client = Client.forContact(email: _email);
client = await InvoiceNinja.clients.save(client);
// 创建并保存发票
var invoice = Invoice.forClient(client, products: [_product!]);
invoice = await InvoiceNinja.invoices.save(invoice);
setState(() {
_invoice = invoice;
});
}
void _viewPdf() {
if (_invoice == null) {
return;
}
// 查看PDF发票
launch(
'https://docs.google.com/gview?embedded=true&url=${_invoice!.pdfUrl}',
forceWebView: true,
);
}
void _viewPortal() {
if (_invoice == null) {
return;
}
final invitation = _invoice!.invitations.first;
launch(invitation.url);
}
[@override](/user/override)
void didChangeAppLifecycleState(AppLifecycleState state) async {
if (_invoice == null || state != AppLifecycleState.resumed) {
return;
}
final invoice = await InvoiceNinja.invoices.findByKey(_invoice!.key);
if (invoice.isPaid) {
// 处理已支付的发票逻辑
}
}
[@override](/user/override)
void dispose() {
WidgetsBinding.instance.removeObserver(this);
super.dispose();
}
[@override](/user/override)
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Invoice Ninja Example'),
),
body: SingleChildScrollView(
child: Padding(
padding: const EdgeInsets.all(16),
child: Card(
child: Padding(
padding: const EdgeInsets.all(16),
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
TextFormField(
decoration: InputDecoration(
labelText: 'Email',
suffixIcon: Icon(Icons.email),
),
onChanged: (value) => setState(() => _email = value),
keyboardType: TextInputType.emailAddress,
),
DropdownButtonFormField<Product>(
decoration: InputDecoration(
labelText: 'Product',
),
onChanged: (value) => setState(() => _product = value),
items: _products
.map((product) => DropdownMenuItem(
child: Text(product.productKey),
value: product,
))
.toList(),
),
SizedBox(height: 16),
OutlinedButton(
child: Text('Create Invoice'),
onPressed: (_email.isNotEmpty && _product != null)
? () => _createInvoice()
: null,
),
OutlinedButton(
child: Text('View PDF'),
onPressed: (_invoice != null) ? () => _viewPdf() : null,
),
OutlinedButton(
child: Text('View Portal'),
onPressed: (_invoice != null) ? () => _viewPortal() : null,
),
],
),
),
),
),
),
);
}
}
更多关于Flutter财务管理插件invoiceninja的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
更多关于Flutter财务管理插件invoiceninja的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
当然,关于在Flutter项目中使用Invoiceninja财务管理插件,下面是一个简单的代码示例,展示如何集成和使用该插件(假设Invoiceninja有一个官方的Flutter插件或者可以通过HTTP API进行交互)。由于Invoiceninja主要是一个SaaS服务,更多时候我们可能通过其API进行集成。以下是一个通过HTTP请求与Invoiceninja API交互的示例。
首先,确保在pubspec.yaml
文件中添加必要的依赖项,比如http
用于发送网络请求:
dependencies:
flutter:
sdk: flutter
http: ^0.13.3 # 确保使用最新版本
然后,运行flutter pub get
来安装依赖。
接下来,创建一个Dart文件来处理与Invoiceninja API的交互。例如,创建一个名为invoiceninja_api.dart
的文件:
import 'dart:convert';
import 'package:http/http.dart' as http;
class InvoiceninjaApi {
static const String apiUrl = 'https://your-invoiceninja-instance.com/api/v1';
static const String apiKey = 'your-api-key-here'; // 请替换为你的API密钥
Future<Map<String, dynamic>> getClient(String clientId) async {
final response = await http.get(
Uri.parse('$apiUrl/clients/$clientId'),
headers: <String, String>{
'Content-Type': 'application/json',
'Authorization': 'Bearer $apiKey',
},
);
if (response.statusCode == 200) {
return jsonDecode(response.body);
} else {
throw Exception('Failed to fetch client: ${response.statusCode}');
}
}
Future<Map<String, dynamic>> createInvoice({
required String clientId,
required String number,
required double amount,
required String date,
}) async {
final body = jsonEncode(<String, dynamic>{
'client_id': clientId,
'number': number,
'amount': amount,
'date': date,
});
final response = await http.post(
Uri.parse('$apiUrl/invoices'),
headers: <String, String>{
'Content-Type': 'application/json',
'Authorization': 'Bearer $apiKey',
},
body: body,
);
if (response.statusCode == 201) {
return jsonDecode(response.body);
} else {
throw Exception('Failed to create invoice: ${response.statusCode}');
}
}
}
在Flutter应用的某个地方,比如一个按钮点击事件中,你可以调用上述API方法来获取客户或创建发票:
import 'package:flutter/material.dart';
import 'invoiceninja_api.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text('Invoiceninja Integration'),
),
body: Center(
child: MyHomePage(),
),
),
);
}
}
class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final InvoiceninjaApi _api = InvoiceninjaApi();
void _fetchClient() async {
try {
final client = await _api.getClient('client-id-here'); // 替换为实际的客户端ID
print('Fetched client: $client');
} catch (e) {
print('Error: $e');
}
}
void _createInvoice() async {
try {
final invoice = await _api.createInvoice(
clientId: 'client-id-here', // 替换为实际的客户端ID
number: 'INV001',
amount: 100.0,
date: '2023-10-10',
);
print('Created invoice: $invoice');
} catch (e) {
print('Error: $e');
}
}
@override
Widget build(BuildContext context) {
return Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
ElevatedButton(
onPressed: _fetchClient,
child: Text('Fetch Client'),
),
SizedBox(height: 20),
ElevatedButton(
onPressed: _createInvoice,
child: Text('Create Invoice'),
),
],
);
}
}
请注意,以上代码中的API URL和API密钥需要替换为你自己的Invoiceninja实例和API密钥。此外,确保你已经在Invoiceninja后台为你的应用生成了API密钥,并且API密钥具有执行这些操作的权限。
这个例子仅展示了基本的HTTP请求。如果Invoiceninja提供了官方的Flutter插件,那么集成方式可能会有所不同,通常会更简单且更符合Flutter的开发习惯。请参考官方文档以获取更多信息和最新的API端点。