Flutter插件another_square的介绍与用途详解

Flutter包another_square是用于Square REST API的。通过此插件，开发者可以轻松地与Square的各种服务进行交互。

Square APIs

下表列出了another_square支持的功能及其对应的API文档链接：

Credentials

为了与Square交互，您需要一个开发者账户以及clientId和clientSecret。您可以从以下链接获取这些信息： https://developer.squareup.com/apps

示例代码

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

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Another Square 示例'),
        ),
        body: Center(
          child: ElevatedButton(
            onPressed: () async {
              // 初始化Square客户端
              final squareClient = SquareClient(
                applicationId: 'YOUR_APPLICATION_ID',
                clientId: 'YOUR_CLIENT_ID',
                clientSecret: 'YOUR_CLIENT_SECRET',
                environmentType: EnvironmentType.Sandbox,
              );
              await squareClient.initialize();

              // 获取授权页面URL
              var authUrl = squareClient.getAuthorizationPageUrl(
                scopes: [Scope.CustomerWrite, Scope.CustomerRead],
                redirectUrl: '<your redirect url>',
                state: "state123",
              );

              // 使用授权码获取访问令牌
              var autoToken = await squareClient.getAuthToken(
                code: '<code from redirect url>',
                redirectUrl: '<redirect url>',
              );

              // 刷新过期的访问令牌
              String token = (await squareClient.refreshToken(
                refreshToken: autoToken.refresh_token,
              )).accessToken;

              print('Access Token: $token');
            },
            child: Text('获取Square访问令牌'),
          ),
        ),
      ),
    );
  }
}