JWT 生成の概要

import UIKit
import SafariServices

class ViewController: UIViewController, SFSafariViewControllerDelegate {
    
    var jwtURL = "https://profile.ayrshare.com?domain=acme&jwt=eyJhbGciOiJ"

    override func viewDidLoad() {
        super.viewDidLoad()
        setupButton()
    }
    
    func setupButton() {
        let button = UIButton(type: .system)
        button.frame = CGRect(x: (view.bounds.width - 200) / 2, y: (view.bounds.height - 50) / 2, width: 200, height: 50)
        button.setTitle("Open URL", for: .normal)
        button.addTarget(self, action: #selector(buttonTapped), for: .touchUpInside)
        view.addSubview(button)
    }

    @objc func buttonTapped() {
        openURLInInAppBrowser()
    }

    func openURLInInAppBrowser() {
        if let url = URL(string: jwtURL) {
            let safariVC = SFSafariViewController(url: url)
            safariVC.delegate = self
            present(safariVC, animated: true, completion: nil)
        }
    }

    // Optional: If you want to handle when the in-app browser is closed
    func safariViewControllerDidFinish(_ controller: SFSafariViewController) {
        controller.dismiss(animated: true, completion: nil)
    }
}

/** yaml dependencies
  dependencies:
    flutter:
      sdk: flutter
    url_launcher: ^6.2.1
*/

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

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'URL Launcher Example',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  final String jwtURL = "https://profile.ayrshare.com?domain=acme&jwt=eyJhbGciOiJ";

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('URL Launcher Example'),
      ),
      body: Center(
        child: ElevatedButton(
          onPressed: () {
            openURLInBrowser(context);
          },
          child: Text('Open URL'),
        ),
      ),
    );
  }

  void openURLInBrowser(BuildContext context) async {
    if (await canLaunch(jwtURL)) {
      await launch(jwtURL);
    } else {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          content: Text('Could not launch $jwtURL'),
        ),
      );
    }
  }
}

/**
• Using the API provided by expo-web-browser,
• which opens a URL in a modal browser window that shares cookies
• with the system browser.

• Learn more about expo: https://reactnative.dev/docs/environment-setup?guide=quickstart
• and running the following command:
• expo install expo-web-browser
*/

import React from 'react';
import { StyleSheet, Button, View } from 'react-native';
import * as WebBrowser from 'expo-web-browser';

export default function App() {
  const jwtURL = 'https://profile.ayrshare.com?domain=acme&jwt=eyJhbGciOiJ';

  const openURLInBrowser = async () => {
    try {
      await WebBrowser.openBrowserAsync(jwtURL);
      // Optional: WebBrowser.openBrowserAsync returns a promise that resolves with an object containing
      // 'type' that can be 'cancelled' or 'dismissed'. You can use this to handle when the browser is closed.
    } catch (error) {
      console.error(error);
    }
  };

  return (
    <View style={styles.container}>
      <Button title="Open URL" onPress={openURLInBrowser} />
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
});