DART未经手的例外：Nosuchmethoderror：无顶级Getter＆＃x27; xx＆＃x27;声明。不得运行运行主DART入口点

Question

Steps to reproduce

NO.1 Create the following Dart program:

(1) main.dart

import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

@pragma('vm:entry-point')
void test() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: Scaffold(
        body: const Center(
          child: Text('Flutter Demo'),
        ),
      ),
    );
  }
}

(2) pubspec.yaml

version: 1.0.0+1

environment:
  sdk: ">=2.16.2 <3.0.0"

dependencies:
  flutter:
    sdk: flutter

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^1.0.2
  shared_preferences: ^2.0.13

(3) flutter doctor

/Users/dqs/Documents/CompanyProjects/Flutter/flutter/bin/flutter doctor --verbose
[✓] Flutter (Channel stable, 2.10.4, on macOS 12.0.1 21A559 darwin-x64, locale zh-Hans-CN)
    • Flutter version 2.10.4 at /Users/dqs/Documents/CompanyProjects/Flutter/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision c860cba910 (4 weeks ago), 2022-03-25 00:23:12 -0500
    • Engine revision 57d3bac3dd
    • Dart version 2.16.2
    • DevTools version 2.9.2
    • Pub download mirror https://pub.flutter-io.cn
    • Flutter download mirror https://storage.flutter-io.cn

NO.2 ~ Create the following iOS program:

(1) BaseFlutterController 。

import UIKit
import Flutter

class BaseFlutterController: FlutterViewController {
    
    override init(engine: FlutterEngine, nibName: String?, bundle nibBundle: Bundle?) {
        super.init(engine: engine, nibName: nibName, bundle: nibBundle)
    }
    
    required init(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()

    }
    
}

​

import UIKit
import FlutterPluginRegistrant

class TestController: BaseFlutterController {
    
    init(withEntrypoint entryPoint: String?) {
      let appDelegate: AppDelegate = UIApplication.shared.delegate as! AppDelegate
      let newEngine = appDelegate.flutterEngines.makeEngine(withEntrypoint: entryPoint, libraryURI: nil)
      // register third-party packages
      GeneratedPluginRegistrant.register(with: newEngine)
      super.init(engine: newEngine, nibName: nil, bundle: nil)
    }
    
    required init(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    override func viewDidLoad() {
        super.viewDidLoad()
       
    }
}

​

import UIKit
import Flutter

@UIApplicationMain
class AppDelegate: FlutterAppDelegate {
    
    //MARK: Flutter Engines
    lazy var flutterEngines = FlutterEngineGroup(name: "native_flutter_engine_group", project: nil)

​

let testVC = TestController(withEntrypoint: "test")
navigationController?.pushViewController(testVC, animated: true)

​

预期的行为

期望测试（）作为程序的入口点运行，并产生正常的颤音屏幕。

实际行为

该应用程序在调试模式下运行良好，但在版本中失败模式，并具有以下错误：

[768:219965] [VERBOSE-2:shell.cc(93)] Dart Unhandled Exception: NoSuchMethodError: No top-level getter 'test' declared.
Receiver: top-level
Tried calling: test, stack trace: #0      NoSuchMethodError._throwNew (dart:core-patch/errors_patch.dart:222)
[768:219965] [VERBOSE-2:dart_isolate.cc(681)] Could not resolve main entrypoint function.
[VERBOSE-2:dart_isolate.cc(165)] Could not run the run main Dart entrypoint.
[768:219965] [VERBOSE-2:runtime_controller.cc(381)] Could not create root isolate.
[768:219965] [VERBOSE-2:shell.cc(580)] Could not launch engine with configuration.

我的尝试

当我从“ pubspec.yaml”中删除“ shared_preferences： ^2.0.13”软件包时，它在 debug 和 repartion 模式下均效果很好。 然后我还尝试了其他软件包（Local-Storage与其他软件包和其他软件包），我发现一旦使用了有关本地存储的软件包（例如shared_preferences，cached_network_image ...），问题肯定会出现，当我删除它们时，一切都可以了。 。 （所有本地存储相关的软件包，例如共享_preference，在 pure flutter project中都很好地工作 debug 和版本模式，但是版本模式中不工作。

>在 ios x

void main() => runApp(const MyApp());

@pragma('vm:entry-point')
void test() => runApp(const MyApp());

Flutter