一.创建关联module

1.创建原生项目iOS_demo,找到者自己的iOS工程目录

2.创建flutter_module（2种方式）

2.1.终端命令 cd 到原生项目iOS_demo同级目录下 创建flutter模块如flutter_native

flutter create --template module flutter模块名

2.2.AndroidStudio 创建Modlue

 

此时文件生成flutter_native文件夹 

3.flutter_module的pubspec.yaml下添加自己的依赖库，终端执行flutter pub get拉取依赖库

flutter pub get

4.原生iOS项目下pod init 创建Podfile 文件，Podfile添加flutter_module

# Uncomment the next line to define a global platform for your project
# platform :ios, '9.0'

# 添加模块所在路径
flutter_application_path = '../flutter_native'
load File.join(flutter_application_path, '.ios', 'Flutter', 'podhelper.rb')

target 'flutter_demo' do
  # Comment the next line if you don't want to use dynamic frameworks
  use_frameworks!

  # 安装Flutter模块
  install_all_flutter_pods(flutter_application_path)

end

5.pod install 安装依赖

二. 代码

在iOS是原生项目AppDelegate导入flutter库

import Flutter
import FlutterPluginRegistrant

创建全局的引擎入口

    // 1. 创建 flutterEngine  name: 引擎名称
    lazy var flutterEngine = FlutterEngine(name: "Evan_Engine")


    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {

        // 2.启动引擎
        flutterEngine.run()
        return true
    }

在页面中进行跳转flutter

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = UIColor.brown
        // Do any additional setup after loading the view.
    }

    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        //搜索到了很多中获取控制器跳转的方法，感觉这种获取 控制器跳转最为流畅 （自我感觉）
        let flutterEngine = (UIApplication.shared.delegate as! AppDelegate).flutterEngine
        let flutterViewController = FlutterViewController(engine: flutterEngine, nibName: nil, bundle: nil)
        present(flutterViewController, animated: true, completion: nil)
    }

}

三.flutter热加载编写代码

此时flutter   module里面AndroidStudio 点击下图标，或者vscode终端输入 flutter attach

flutter attach

 后xcode 跑模拟器（1.注意与flutter attach是同一设备，设备处于激活状态 2.APP退出）

修改后注意保存是不能实时更新UI,需要终端输入R进行热更新