flutter通过通道调用原生方法

/// 只有是iOS设备才显示苹果登陆
if (Platform.isIOS){
      list.add(GestureDetector(
        child: Image.asset(
          QPictureManager.instance.getAssetsImage(QAssets.icon_apple),
          gaplessPlayback: true,
          width: 48.rpx,
          height: 48.rpx,
        ),
        onTap: loginApple,
      ));
    }

/// 请求登陆与原生交互
loginApple() async {
      const platform = const MethodChannel("login");
      var result;

      Map<dynamic, dynamic> params;

      try {
        result = await platform.invokeMethod("login_apple", []);

        params = result as Map<dynamic, dynamic>;

        
      }catch(e){
         QLog("苹果登陆失败！${e}", StackTrace.current);
      }

      if (params == null){
        QLog("苹果登陆获取OpenId失败！", StackTrace.current);
         return;
      }

      final openId = params["openId"];

      if (openId.isEmpty){
        QLog("苹果登陆获取OpenId为空！", StackTrace.current);
        return;
      }

      QLog("苹果登陆开始请求数据！", StackTrace.current);

  }

iOS Swift原生注册

import UIKit

import AuthenticationServices

class QLoginFlutterPlugin: NSObject, FlutterPlugin, ASAuthorizationControllerDelegate, ASAuthorizationControllerPresentationContextProviding {
   
    
    static let instance = QLoginFlutterPlugin()
    
    static func register(with registrar: FlutterPluginRegistrar) {

        let channel = FlutterMethodChannel.init(name: "login", binaryMessenger: registrar.messenger())
        registrar.addMethodCallDelegate(instance, channel: channel)
    }
    
    var resultLogin : FlutterResult?
    
    func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
        if call.method.elementsEqual("login_apple") {
            if #available(iOS 13.0, *) {
                
                resultLogin = result
                
                let request = ASAuthorizationAppleIDProvider().createRequest()
                
                request.requestedScopes = [.fullName, .email]
                 
                let authController = ASAuthorizationController(authorizationRequests: [request])
                
                authController.delegate = self
                authController.presentationContextProvider =  self
                authController.performRequests()//启动授权
            }
        }
    }
    
    
    @available(iOS 13.0, *)
    func presentationAnchor(for controller: ASAuthorizationController) -> ASPresentationAnchor {
        return UIApplication.shared.keyWindow!
    }
    
    @available(iOS 13.0, *)
    func authorizationController(controller: ASAuthorizationController, didCompleteWithAuthorization authorization: ASAuthorization) {
        guard let credential = authorization.credential as? ASAuthorizationAppleIDCredential else {
           
            return
        }
      
        let params = ["openId": credential.user]
        
        resultLogin?(params)
    }
    
    @available(iOS 13.0, *)
    func authorizationController(controller: ASAuthorizationController, didCompleteWithError error: Error) {
        
    }

}

AppDelegate注册

 override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    GeneratedPluginRegistrant.register(with: self)
    
    QLoginFlutterPlugin.register(with: registrar(forPlugin: "QLoginFlutterPlugin"))
    
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }

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