flutter create --template module my_flutter

my_flutter/
├── .ios/
├── .android/
├── lib/
│   └── main.dart
├── test/
└── pubspec.yaml

platform :ios, '12.0'
# 添加模塊所在路徑
flutter_application_path = '../my_flutter'
load File.join(flutter_application_path, '.ios', 'Flutter', 'podhelper.rb')
 
target 'FlutterHybridDemo' do
  # Comment the next line if you don't want to use dynamic frameworks
  use_frameworks!
  
  # 安裝Flutter模塊
  install_all_flutter_pods(flutter_application_path)
  
  # Pods for FlutterHybridDemo
end
post_install do |installer|
  flutter_post_install(installer) if defined?(flutter_post_install)
end

import UIKit
import FlutterPluginRegistrant
@main
class AppDelegate: UIResponder, UIApplicationDelegate {
 
    // 1.創(chuàng)建一個(gè)FlutterEngine對(duì)象
    lazy var flutterEngine = FlutterEngine(name:"my flutter engine")
 
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
        // 2 啟動(dòng)
        flutterEngine.run()
        
        return true
    }

import UIKit
import Flutter
class ViewController: UIViewController {
 
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        
        let btn = UIButton(type: UIButton.ButtonType.custom)
        btn.setTitle("加載flutter", for: UIControl.State.normal)
        btn.frame = CGRect(x: 50, y: 50, width: 200, height: 50)
        btn.backgroundColor = UIColor.blue
        btn.addTarget(self, action: #selector(showFlutter), for: UIControl.Event.touchUpInside)
        view.addSubview(btn)
    }
    
    @objc func showFlutter(){
        
        let flutterEngine = (UIApplication.shared.delegate as! AppDelegate).flutterEngine
        
        let flutterController = FlutterViewController(engine:flutterEngine, nibName: nil, bundle: nil)
        
        present(flutterController, animated: true)
        
        
    }
 
}