Flutter中如何检测开发者选项的启用与禁用状态？

由于Flutter框架本身没有提供直接读取系统开发者模式状态的API，你需要通过MethodChannel与原生平台（Android/iOS）交互来实现该功能，以下是具体实现步骤：

Android端实现 #

在Flutter项目的android/app/src/main/kotlin/[包名]/MainActivity.kt中注册MethodChannel，并实现获取开发者模式状态的逻辑：

import android.provider.Settings
import io.flutter.embedding.android.FlutterActivity
import io.flutter.embedding.engine.FlutterEngine
import io.flutter.plugin.common.MethodChannel

class MainActivity : FlutterActivity() {
    private val CHANNEL = "com.example/dev_mode_check"

    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
        super.configureFlutterEngine(flutterEngine)
        MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHANNEL).setMethodCallHandler { call, result ->
            if (call.method == "isDeveloperModeEnabled") {
                val devModeEnabled = try {
                    Settings.Global.getInt(contentResolver, Settings.Global.DEVELOPMENT_SETTINGS_ENABLED, 0) == 1
                } catch (e: Settings.SettingNotFoundException) {
                    false
                }
                result.success(devModeEnabled)
            } else {
                result.notImplemented()
            }
        }
    }
}

Flutter端实现 #

在Dart代码中创建MethodChannel实例，调用原生接口并根据状态切换页面：

import 'package:flutter/services.dart';
import 'package:flutter/material.dart';

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

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  static const MethodChannel _channel = MethodChannel('com.example/dev_mode_check');
  bool _isDeveloperModeEnabled = false;

  @override
  void initState() {
    super.initState();
    _checkDeveloperMode();
  }

  Future<void> _checkDeveloperMode() async {
    bool isEnabled;
    try {
      isEnabled = await _channel.invokeMethod('isDeveloperModeEnabled') ?? false;
    } on PlatformException catch (_) {
      isEnabled = false;
    }
    setState(() {
      _isDeveloperModeEnabled = isEnabled;
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: _isDeveloperModeEnabled 
          ? const DeveloperRestrictionPage()
          : const HomePage(),
    );
  }
}

// 开发者模式限制页面
class DeveloperRestrictionPage extends StatelessWidget {
  const DeveloperRestrictionPage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Text(
          '开发者模式已开启，该应用暂时无法使用',
          style: Theme.of(context).textTheme.headlineSmall,
          textAlign: TextAlign.center,
        ),
      ),
    );
  }
}

// 正常首页
class HomePage extends StatelessWidget {
  const HomePage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('应用首页')),
      body: const Center(child: Text('正常使用中')),
    );
  }
}

补充说明 #

• Android端通过Settings.Global.getInt读取系统状态，返回1表示开发者模式开启，0表示关闭；捕获SettingNotFoundException避免异常崩溃。
• Flutter端在页面初始化时调用原生接口，根据返回结果自动切换显示限制页面或正常首页。
• 若需支持iOS平台，可在iOS原生项目的AppDelegate.swift中实现对应逻辑：通过检测系统开发者模式相关的UserDefaults键值或调用iOS系统API完成状态判断。

内容的提问来源于stack exchange，提问作者Naimish Patel