[Bug]: iOS 18.4.1 跳转到 Flutter 页面 直接卡死

[aixinchao]

请描述遇到的问题，以及您所期望的正确的结果

1、创建了一个 Flutter 项目：flutter create -t module flutter_module 2、注册路由

static Map<String, FlutterBoostRouteFactory> routerMap ={
    'mainPage': (settings, uniqueId) {
      return CupertinoPageRoute(
          settings: settings,
          builder: (_) {
            Map<String, dynamic> parameters = settings.arguments as Map<String, dynamic>? ?? {};
            return MainPage(
              parameters: parameters,
            );
          });
    },
}

3、启动 FlutterBoost

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

private func setupFlutterEngine(application: UIApplication) {
        
        let delegate = FlutterBoostDelegate()
        // 启动 FlutterBoost
        FlutterBoost.instance().setup(application, delegate: delegate) { [weak self] engine in
            self?.flutterEngine = engine
        }
    }

界面跳转

let options = FlutterBoostRouteOptions()
options.pageName = "mainPage"
FlutterBoost.instance().open(options)

4、直接卡死在 pushFlutterRoute 这个方法的 let vc: FBFlutterViewContainer = FBFlutterViewContainer() 这一行代码

func pushFlutterRoute(_ options: FlutterBoostRouteOptions!) {
        let vc: FBFlutterViewContainer = FBFlutterViewContainer()
       ......
}

Flutter Version: Flutter 3.29.3 • channel stable • https://github.com/flutter/flutter.git Framework • revision ea121f8859 (4 weeks ago) • 2025-04-11 19:10:07 +0000 Engine • revision cf56914b32 Tools • Dart 3.7.2 • DevTools 2.42.3

flutter_boost Version： flutter_boost: git: url: 'https://github.com/alibaba/flutter_boost.git' ref: '4.6.1'

iOS Version: Xcode Version 16.3 (16E140) iOS 18.4.1 手机 iPhone 15 Pro

每次 跳转 Flutter 页面 项目都直接卡死，怎么才能在18.4.1正常跑起来？测试在18.2 是正常的。

请说明如何操作会遇到上述问题

No response

在下面填入关键复现代码

复现的平台

iOS

Flutter SDK版本

3.29.3

FlutterBoost版本

4.6.1

是否延迟初始化FlutterBoost

No

解决方案

[lc18652613]

你是国航手机遇到此问题么？ 我是国外部分手机有此问题，国航手机未复现

[aixinchao]

你是国航手机遇到此问题么？ 我是国外部分手机有此问题，国航手机未复现

使用的是国行的，不知道是不是跟这个关系，目前就是发现跟手机系统版本有问题，系统升级到18.4.1 就有这个问题，18.2 的时候都是正常的

[AnnyName]

大佬，有解决方案吗？ 我这也是 到这儿就不往下走了 let vc: FBFlutterViewContainer = FBFlutterViewContainer()

[applebest]

 let delegate = FlutterBoostDelegate()
        // 启动 FlutterBoost
        FlutterBoost.instance().setup(application, delegate: delegate) { [weak self] engine in
            self?.flutterEngine = engine
        }

代理做成单利试试 let delegate = BoostDelegate.shared

[xieyinghao]

我用demo测试，也出现这个情况：

• (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { self.window = [[UIWindow alloc] initWithFrame: [UIScreen mainScreen].bounds]; [self.window makeKeyAndVisible];

  FlutterBoostSetupOptions* options = [FlutterBoostSetupOptions createDefault]; options.dartEntryPointArgs = @[ @"I'm from IOS!", @"--for-test" ];

  MyFlutterBoostDelegate* delegate=[[MyFlutterBoostDelegate alloc ] init]; [[FlutterBoost instance] setup:application delegate:delegate callback:^(FlutterEngine engine) { NSObject<FlutterPluginRegistrar> registrar = [engine registrarForPlugin:@"plugin-name"]; FLNativeViewFactory* factory = [[FLNativeViewFactory alloc] initWithMessenger:registrar.messenger]; [[engine registrarForPlugin:@""] registerViewFactory:factory withId:@""]; } options:options];

  UIViewControllerDemo *vc = [[UIViewControllerDemo alloc] initWithNibName:@"UIViewControllerDemo" bundle:[NSBundle mainBundle]]; vc.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"hybrid" image:nil tag:0];

  FBFlutterViewContainer *fvc = [[FBFlutterViewContainer alloc] init] ;

  [fvc setName:@"tab_friend" uniqueId:nil params:@{} opaque:YES]; fvc.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"flutter_tab" image:nil tag:1];

  UITabBarController *tabVC = [[UITabBarController alloc] init]; tabVC.viewControllers = @[vc,fvc];

  UINavigationController *rvc = [[UINavigationController alloc] initWithRootViewController:tabVC];

  delegate.navigationController=rvc;

  self.window.rootViewController = rvc;

  UIButton *nativeButton = [UIButton buttonWithType:UIButtonTypeCustom]; nativeButton.frame = CGRectMake(self.window.frame.size.width * 0.5 - 50, 200, 100, 40); nativeButton.backgroundColor = [UIColor redColor]; [nativeButton setTitle:@"push native" forState:UIControlStateNormal]; [nativeButton addTarget:self action:@selector(pushNative) forControlEvents:UIControlEventTouchUpInside]; [self.window addSubview:nativeButton];

  UIButton *pushEmbeded = [UIButton buttonWithType:UIButtonTypeCustom]; pushEmbeded.frame = CGRectMake(self.window.frame.size.width * 0.5 - 70, 150, 140, 40); pushEmbeded.backgroundColor = [UIColor redColor]; [pushEmbeded setTitle:@"push embedded" forState:UIControlStateNormal]; [pushEmbeded addTarget:self action:@selector(pushEmbeded) forControlEvents:UIControlEventTouchUpInside]; [self.window addSubview:pushEmbeded];

  return YES; }

当打印如下就正常显示： flutter: The Dart VM service is listening on http://127.0.0.1:64296/10u-9h5XPkE=/ flutter: FlutterBoost_dart#page_visibility, #addGlobalObserver, Instance of 'AppGlobalPageVisibilityObserver' flutter: FlutterBoost_dart#boost_flutter_binding: handleAppLifecycleStateChanged AppLifecycleState.resumed flutter: dartEntrypointArgs: [I'm from IOS!, --for-test] flutter: FlutterBoost_dart#restoreStackForHotRestart, null, null flutter: FlutterBoost_dart#saveStackForHotRestart, [1748248963846/], {1748248963846/: Instance of 'FlutterContainer'}

[HeHuiqi]

FlutterBoost.m 中的预热引擎方法如下：

/// 提前预热引擎
- (void)warmUpEngine {
  FlutterViewController* vc = [[FlutterViewController alloc] initWithEngine:self.engine
                                                                    nibName:nil bundle:nil];
//卡死页面的代码地方
//下面这几行代码的调用时机应在在addChildVC后，没有addChildVC直接调用会有问题
  [vc beginAppearanceTransition:YES animated:NO];
  [vc endAppearanceTransition];
  [vc beginAppearanceTransition:NO animated:NO];
  [vc endAppearanceTransition];
}

解决方法：

1. 初始化时关闭预热 AppDelegate.swift

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        
        let ops:FlutterBoostSetupOptions = FlutterBoostSetupOptions()
        //关闭预热
        ops.warmUpEngine = false
        let delegate = MyBoostAppDelegate.shared
        FlutterBoost.instance().setup(application, delegate: delegate, callback: { engine in
                                        
        }, options: ops)
        return true
    }

2. 手动预热，最好在window的根控制器中，或其他控制器中，自己根据情况选择 ViewController.swift

    override func viewDidLoad() {
        super.viewDidLoad()
        //手动预热
        if let eg = FlutterBoost.instance().engine() {
           let vc = FBFlutterViewContainer(engine: eg, nibName: nil, bundle: nil)
            //隐藏视图
            vc.view.isHidden = true
            self.addChild(vc)
            vc.beginAppearanceTransition(true, animated: false)
            vc.endAppearanceTransition()
            vc.beginAppearanceTransition(false, animated: false)
            vc.endAppearanceTransition()
        }