Flutter应用中集成Ramp Network的服务插件ramp_flutter的使用

发布于 1周前 作者 phonegap100 最后一次编辑是 5天前 来自 Flutter

Flutter应用中集成Ramp Network的服务插件ramp_flutter的使用

介绍

ramp_flutter 是Ramp Network官方提供的Flutter封装库，用于在Flutter应用中集成Ramp Network的服务。通过这个插件，开发者可以在应用中轻松实现加密货币的买卖（Onramp和Offramp）功能。

使用说明

安装与配置

要使用 ramp_flutter 插件，请按照官方文档进行安装和配置。以下是完整的示例代码，展示了如何在Flutter项目中集成并使用 ramp_flutter。

示例代码

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

import 'package:ramp_flutter/configuration.dart';
import 'package:ramp_flutter/offramp_sale.dart';
import 'package:ramp_flutter/onramp_purchase.dart';
import 'package:ramp_flutter/ramp_flutter.dart';
import 'package:ramp_flutter/send_crypto_payload.dart';

import 'package:flutter_local_notifications/flutter_local_notifications.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  _setupNotifications();
  runApp(const RampFlutterApp());
}

final _localNotificationsPlugin = FlutterLocalNotificationsPlugin();

Future<void> _setupNotifications() async {
  const InitializationSettings settings = InitializationSettings(
    android: AndroidInitializationSettings('@mipmap/ic_launcher'),
    iOS: DarwinInitializationSettings(),
  );

  await _localNotificationsPlugin.initialize(settings).then((_) {
    debugPrint('Local Notifications setup success');
  }).catchError((Object error) {
    debugPrint('Local Notifications setup error: $error');
  });
}

class RampFlutterApp extends StatefulWidget {
  const RampFlutterApp({Key? key}) : super(key: key);

  [@override](/user/override)
  State<RampFlutterApp> createState() => _RampFlutterAppState();
}

class _RampFlutterAppState extends State<RampFlutterApp> {
  final ramp = RampFlutter();
  final Configuration _configuration = Configuration();

  final List<String> _predefinedEnvironments = [
    "https://app.dev.ramp-network.org",
    "https://ri-widget-staging.firebaseapp.com",
    "https://app.ramp.network",
  ];

  int _selectedEnvironment = 1;
  bool _useFullCustomUrl = false;
  String _fullCustomUrl = "";

  [@override](/user/override)
  void initState() {
    // 初始化配置
    _configuration.hostAppName = "Ramp Network Flutter";
    _configuration.url = _predefinedEnvironments[_selectedEnvironment];
    _configuration.enabledFlows = ["ONRAMP", "OFFRAMP"];
    _configuration.useSendCryptoCallback = true;

    // 设置回调函数
    ramp.onOnrampPurchaseCreated = onOnrampPurchaseCreated;
    ramp.onSendCryptoRequested = onSendCryptoRequested;
    ramp.onOfframpSaleCreated = onOfframpSaleCreated;
    ramp.onRampClosed = onRampClosed;

    super.initState();
  }

  void _selectEnvironment(int id) {
    _selectedEnvironment = id;
    _configuration.url = _predefinedEnvironments[_selectedEnvironment];
    setState(() {});
  }

  void onOnrampPurchaseCreated(
    OnrampPurchase purchase,
    String purchaseViewToken,
    String apiUrl,
  ) {
    // 处理Onramp购买创建事件
    _showNotification("Ramp Network Notification", "onramp purchase created");
  }

  void onSendCryptoRequested(SendCryptoPayload payload) {
    // 处理发送加密货币请求事件
    _showNotification("Ramp Network Notification", "send crypto requested");
    ramp.sendCrypto("123");
  }

  void onOfframpSaleCreated(
    OfframpSale sale,
    String saleViewToken,
    String apiUrl,
  ) {
    // 处理Offramp销售创建事件
    _showNotification("Ramp Network Notification", "offramp sale created");
  }

  void onRampClosed() {
    // 处理Ramp关闭事件
    _showNotification("Ramp Network Notification", "ramp closed");
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return PlatformApp(
      home: PlatformScaffold(
        appBar: PlatformAppBar(
          title: const Text('Ramp Network Flutter'),
        ),
        body: Padding(
          padding: const EdgeInsets.fromLTRB(10, 0, 10, 0),
          child: ListView(
            children: _formFields(context),
          ),
        ),
      ),
    );
  }

  List<Widget> _formFields(BuildContext context) {
    List<Widget> widgets = [];
    widgets.add(_useFullCustomUrlToggle());
    if (_useFullCustomUrl) {
      widgets.addAll(_customUrlForm());
    } else {
      widgets.addAll(_configurationForm());
    }
    widgets.add(_showRampButton());
    widgets.add(_appInfo());
    return widgets;
  }

  Widget _appInfo() {
    return PlatformText("App version: Flutter");
  }

  List<Widget> _customUrlForm() {
    return [
      _textField(
        "Full custom URL",
        (text) => _fullCustomUrl = text,
        _fullCustomUrl,
      )
    ];
  }

  List<Widget> _configurationForm() {
    return [
      _segmentedControl(
        "Env:",
        ["dev", "staging", "prod"],
        _selectEnvironment,
      ),
      PlatformText(
        _predefinedEnvironments[_selectedEnvironment],
        style: const TextStyle(
          color: Color.fromRGBO(46, 190, 117, 1),
        ),
      ),
      _textField(
        "User email address",
        (text) => _configuration.userEmailAddress = text,
        _configuration.userEmailAddress,
      ),
      _textField(
        "Fiat value",
        (text) => _configuration.fiatValue = text,
        _configuration.fiatValue,
      ),
      _textField(
        "Fiat currency",
        (text) => _configuration.fiatCurrency = text,
        _configuration.fiatCurrency,
      ),
      _textField(
        "Default asset",
        (text) => _configuration.defaultAsset = text,
        _configuration.defaultAsset,
      ),
      _textField(
        "User address",
        (text) => _configuration.userAddress = text,
        _configuration.userAddress,
      ),
      _textField(
        "Host app name",
        (text) => _configuration.hostAppName = text,
        _configuration.hostAppName,
      ),
      _textField(
        "Host API key",
        (text) => _configuration.hostApiKey = text,
        _configuration.hostApiKey,
      ),
      _segmentedControl(
        "Default flow:",
        ["ONRAMP", "OFFRAMP"],
        (index) {
          if (index == 0) {
            _configuration.defaultFlow = "ONRAMP";
          }
          if (index == 1) {
            _configuration.defaultFlow = "OFFRAMP";
          }
        },
      ),
      _enabledFlows(),
    ];
  }

  Widget _enabledFlows() {
    List<String> flows = _configuration.enabledFlows ?? [];
    PlatformSwitch onRamp = PlatformSwitch(
      value: flows.contains("ONRAMP"),
      onChanged: (enabled) {
        if (enabled) {
          flows.add("ONRAMP");
        } else {
          flows.remove("ONRAMP");
        }
        _configuration.enabledFlows = flows;
        setState(() {});
      },
    );
    PlatformSwitch offRamp = PlatformSwitch(
      value: flows.contains("OFFRAMP"),
      onChanged: (enabled) {
        if (enabled) {
          flows.add("OFFRAMP");
        } else {
          flows.remove("OFFRAMP");
        }
        _configuration.enabledFlows = flows;
        setState(() {});
      },
    );
    return Row(children: [
      PlatformText("Enabled: "),
      PlatformText("ONRAMP"),
      onRamp,
      PlatformText("OFFRAMP"),
      offRamp,
    ]);
  }

  Widget _showRampButton() {
    return PlatformTextButton(
      onPressed: () {
        if (_useFullCustomUrl) {
          Configuration c = Configuration();
          c.url = _fullCustomUrl;
          ramp.showRamp(c);
        } else {
          ramp.showRamp(_configuration);
        }
      },
      child: PlatformText("Show Ramp"),
    );
  }

  Widget _useFullCustomUrlToggle() {
    return Row(
      children: [
        PlatformText("Use full custom URL"),
        const Spacer(),
        PlatformSwitch(
          value: _useFullCustomUrl,
          onChanged: (value) => setState(() => _useFullCustomUrl = value),
        )
      ],
    );
  }

  Row _segmentedControl(
      String title, List<String> options, void Function(int) itemSelected) {
    List<Widget> segments = options.asMap().entries.map((entry) {
      return PlatformTextButton(
        onPressed: () => itemSelected(entry.key),
        child: PlatformText(entry.value),
      );
    }).toList();
    List<Widget> children = [PlatformText(title)];
    children.addAll(segments);
    return Row(children: children);
  }

  PlatformTextField _textField(
    String placeholder,
    void Function(String) onChanged,
    String? defaultValue,
  ) {
    return PlatformTextField(
      hintText: placeholder,
      onChanged: onChanged,
      controller: TextEditingController(text: defaultValue),
    );
  }

  Future<void> _showNotification(String title, String message) async {
    const AndroidNotificationDetails android =
        AndroidNotificationDetails("channelId", "channelName");
    const NotificationDetails details = NotificationDetails(android: android);
    await _localNotificationsPlugin.show(
      1,
      title,
      message,
      details,
    );
  }
}

更多关于Flutter应用中集成Ramp Network的服务插件ramp_flutter的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html

Harmonyos Next教程
1 回复

更多关于Flutter应用中集成Ramp Network的服务插件ramp_flutter的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html


在探索和使用Flutter中的未知功能插件ramp_flutter时，我们首先需要确保该插件已经正确集成到我们的Flutter项目中。由于ramp_flutter并非Flutter官方或广泛知名的插件，以下步骤和代码示例将基于一般的Flutter插件集成和使用流程，并假设ramp_flutter插件遵循标准的Flutter插件开发规范。

步骤 1: 添加插件依赖

首先，在你的pubspec.yaml文件中添加ramp_flutter插件的依赖。请注意，由于这是一个未知插件，你需要知道其正确的依赖项名称和版本号（这里用占位符代替）：

dependencies:
  flutter:
    sdk: flutter
  ramp_flutter: ^x.y.z  # 替换为实际的版本号

然后运行flutter pub get来安装插件。

步骤 2: 导入插件

在你的Dart文件中，导入ramp_flutter插件以便使用其功能。通常，插件会提供一个主包名，你可以通过它来访问插件的功能：

import 'package:ramp_flutter/ramp_flutter.dart';

步骤 3: 使用插件功能

由于ramp_flutter的具体功能未知，以下示例将展示如何假设性地调用一个名为initialize和performAction的方法（这些方法名应替换为插件实际提供的方法名）：

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

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Ramp Flutter Plugin Example'),
        ),
        body: Center(
          child: RampFlutterExample(),
        ),
      ),
    );
  }
}

class RampFlutterExample extends StatefulWidget {
  @override
  _RampFlutterExampleState createState() => _RampFlutterExampleState();
}

class _RampFlutterExampleState extends State<RampFlutterExample> {
  String result = '';

  @override
  void initState() {
    super.initState();
    _initializeRampFlutter();
  }

  Future<void> _initializeRampFlutter() async {
    try {
      // 假设插件有一个初始化方法
      await RampFlutter.initialize();
      setState(() {
        result = 'Ramp Flutter initialized!';
      });
      // 调用其他方法
      _performAction();
    } catch (e) {
      setState(() {
        result = 'Failed to initialize Ramp Flutter: $e';
      });
    }
  }

  Future<void> _performAction() async {
    try {
      // 假设插件有一个执行动作的方法
      var response = await RampFlutter.performAction();
      setState(() {
        result = 'Action performed with response: $response';
      });
    } catch (e) {
      setState(() {
        result = 'Failed to perform action: $e';
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      mainAxisAlignment: MainAxisAlignment.center,
      children: <Widget>[
        Text(result),
        ElevatedButton(
          onPressed: () => _performAction(),
          child: Text('Perform Action'),
        ),
      ],
    );
  }
}

注意事项

  1. 插件文档：查阅ramp_flutter插件的官方文档或仓库，了解其具体API和功能。
  2. 权限：如果插件需要特定的Android或iOS权限，确保在AndroidManifest.xml或Info.plist中声明这些权限。
  3. 平台特定代码：如果插件包含平台特定代码（如原生方法调用），可能需要编写额外的平台通道代码。
  4. 错误处理：在生产代码中，增加更详细的错误处理和用户反馈机制。

由于ramp_flutter是一个未知插件，上述代码和步骤是基于一般Flutter插件使用的假设性示例。在实际使用中，请务必参考插件的官方文档和示例代码。

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