Flutter应用中检测录屏并触发退出功能的实现需求

针对Android和iOS平台，分别通过原生代码实现录屏检测逻辑，一旦检测到录屏行为立即关闭应用：

Android 实现 #

在MainActivity.kt中添加录屏检测逻辑，通过AppOpsManager检查屏幕录制权限的使用状态，定时轮询检测：

import android.app.AppOpsManager
import android.content.Context
import android.os.Bundle
import android.os.Process
import io.flutter.embedding.android.FlutterActivity
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch

class MainActivity : FlutterActivity() {
    private val appOpsManager by lazy { getSystemService(Context.APP_OPS_SERVICE) as AppOpsManager }
    
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        startScreenRecordingDetection()
    }
    
    private fun startScreenRecordingDetection() {
        CoroutineScope(Dispatchers.Default).launch {
            while (true) {
                delay(1000) // 每秒执行一次检测
                if (isScreenRecording()) {
                    runOnUiThread {
                        finishAffinity() // 关闭所有Activity
                        System.exit(0)
                    }
                    break
                }
            }
        }
    }
    
    private fun isScreenRecording(): Boolean {
        val mode = appOpsManager.checkOpNoThrow(
            AppOpsManager.OPSTR_PROJECT_MEDIA,
            Process.myUid(),
            packageName
        )
        return mode == AppOpsManager.MODE_ALLOWED
    }
}

iOS 实现 #

在AppDelegate.swift中监听系统的屏幕录制状态变化通知，一旦检测到录屏立即退出应用：

import UIKit
import Flutter

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
    override func application(
        _ application: UIApplication,
        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
    ) -> Bool {
        GeneratedPluginRegistrant.register(with: self)
        
        // 注册屏幕录制状态监听
        NotificationCenter.default.addObserver(
            self,
            selector: #selector(screenCaptureStateChanged),
            name: UIScreen.capturedDidChangeNotification,
            object: nil
        )
        
        return super.application(application, didFinishLaunchingWithOptions: launchOptions)
    }
    
    @objc private func screenCaptureStateChanged(_ notification: Notification) {
        guard let screen = notification.object as? UIScreen, screen.isCaptured else {
            return
        }
        // 检测到录屏，直接退出应用
        exit(0)
    }
}

说明 #

• 原生层启动后会自动开始监听/轮询，无需Flutter层额外调用
• 你之前遇到的录屏黑屏问题，是因为可能设置了FLAG_SECURE（Android）或系统隐私保护机制，该逻辑可以保留，同时配合上述检测关闭逻辑使用
• Android方案适配API 21+，iOS方案适配iOS 11+，覆盖绝大多数主流设备

内容的提问来源于stack exchange，提问作者Nassim Solimam