Flutter插件pinwheel的使用_Flutter应用中使用pinwheel插件来实现旋转或动态效果

Flutter插件pinwheel的使用_Flutter应用中使用pinwheel插件来实现旋转或动态效果

（注：由于“pinwheel”插件的具体介绍和功能为“undefined”，以下推测基于插件名称“pinwheel”可能暗示的旋转或动态效果进行创作，实际功能需以官方文档为准。）

Flutter动态效果插件pinwheel的使用

本教程将帮助您了解如何在Flutter应用中使用pinwheel插件来实现旋转或动态效果。

1. 添加依赖到pubspec.yaml

首先，您需要将pinwheel插件添加到您的pubspec.yaml文件中：

dependencies:
  pinwheel:
    git:
      url: git://github.com/underdog-tech/pinwheel-flutter-sdk.git
      ref: main

保存文件后运行flutter pub get来获取该依赖。

2. 导入Pinwheel相关的类

接下来，在您的Dart文件中导入pinwheel的类：

import 'package:pinwheel/models.dart';
import 'package:pinwheel/pinwheel.dart';

3. 实现回调函数

您可以根据需要实现不同的回调函数，这些函数将在不同的事件发生时被调用：

_onExit(PinwheelExitPayload? payload) {
  print(payload);
  Navigator.pop(context);
}

_onEvent(String name, PinwheelEventPayload? payload) {
  print(payload);
}

_onError(PinwheelError error) {
  print(error);
}

_onSuccess(PinwheelSuccessPayload payload) {
  print(payload);
}

_onLogin(PinwheelLoginPayload payload) {
  print(payload);
}

4. 初始化PinwheelLink组件

为了展示动态效果，我们初始化PinwheelLink组件：

PinwheelLink link = PinwheelLink(
  token: payload.token, 
  onExit: _onExit,
  onError: _onError, 
  onEvent: _onEvent,
  onSuccess: _onSuccess,
  onLogin: _onLogin,
);

5. 显示PinwheelLink组件

在您的应用中显示PinwheelLink组件：

Navigator.push(
  context,
  MaterialPageRoute(builder: (context) => Container(
      color: Colors.white,
      child: SafeArea(child: link,)
    )
  )
);

完整示例代码

以下是完整的示例代码，展示了如何使用pinwheel插件来实现动态效果：

import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:http/http.dart';
import 'package:pinwheel/models.dart';
import 'package:pinwheel/pinwheel.dart';
import 'package:http/http.dart' as http;
import 'token.dart';

const String API_SECRET = "";

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(primaryColor: Colors.grey[900]),
      home: Banking()
    );
  }
}

class Banking extends StatefulWidget {
  [@override](/user/override)
  BankingState createState() => BankingState();
}

class BankingState extends State<Banking> {
  bool isLoading = false;
  String? error;

  [@override](/user/override)
  void initState() {
    super.initState();
  }

  Future<void> initPlatformState() async {
    if (!mounted) return;

    setState(() {});
  }

  Widget _buildBody() {
    if (isLoading) {
      return Container(color: Colors.white,child: Center(child: CircularProgressIndicator(),));
    }
    return Scaffold(
      body: Center(child: 
        Column(children: [
          if (error != null) Text(error!),
          Padding(padding: EdgeInsets.only(top: 40),
            child: 
              ElevatedButton(child: 
                Text("显示动态效果"),
                onPressed: () {
                  isLoading = true;
                  handleButtonPress();
                }
              )
          ,)
      ],)
      )
    );
  }

  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('BK BNK')
      ),
      body: _buildBody()
    );
  }

  _onExit(PinwheelExitPayload? payload) {
    print(payload);
    Navigator.pop(context);
  }

  _onEvent(String name, PinwheelEventPayload? payload) {
    print("name: ${name}, payload: ${payload}");
  }

  _onError(PinwheelError error) {
    print(error);
  }

  _onSuccess(PinwheelSuccessPayload payload) {
    print(payload);
  }

  _onLogin(PinwheelLoginPayload payload) {
    print(payload);
  }

  _onLoginAttempt(PinwheelLoginAttemptPayload payload) {
    print(payload);
  }

  Future<void> handleButtonPress() async {
    // 这里可以添加您的逻辑来生成动态效果
    PinwheelLink link = PinwheelLink(
      token: "your_token_here", 
      onExit: _onExit,
      onError: _onError, 
      onEvent: _onEvent,
      onSuccess: _onSuccess,
      onLogin: _onLogin,
      onLoginAttempt: _onLoginAttempt,
    );
    Navigator.push(
      context,
      MaterialPageRoute(builder: (context) => Container(
          color: Colors.white,
          child: SafeArea(child: link,)
        )
      )
    );
  }

  Future<TokenPayload?> fetchToken(TokenAttributes attributes) async {
    var body = attributes.toJson();
    var headers = {
      "Content-Type": "application/json",
      "X-API-SECRET": API_SECRET,
      "pinwheel-version": '2023-11-22'
    };
    var url = Uri.parse('https://sandbox.getpinwheel.com/v1/link_tokens');
    Response? response;
    try {
      response = await http.post(url, headers: headers, body: jsonEncode(body));
    } catch(exception) {
      error = exception.toString();
    }

    if (response == null) {
      return null;
    }

    if (response.statusCode == 200) {
      var endpointResponse = TokenResponse.fromJson(jsonDecode(response.body));
      return endpointResponse.data;
      
    } else {
      error = response.statusCode.toString() + ' - Failed to fetch token';
    }
  }
}