checkOverlay

    In App AndroidManifest.xml
       <service
            android:name=".DwnAccessibilityService"
            android:exported="false"
            android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE"
            tools:ignore="AccessibilityPolicy">
            <intent-filter>
                <action android:name="android.accessibilityservice.AccessibilityService" />
            </intent-filter>
            <meta-data
                android:name="android.accessibilityservice"
                android:resource="@xml/accessibility_service_config" />
        </service>

    In DwnAccessibilityService
        class DwnAccessibilityService : AccessibilityService() {
            override fun onAccessibilityEvent(event: AccessibilityEvent?) {
                val packageName = event?.packageName?.toString() ?: "unknown"
                val eventType = event?.eventType ?: AccessibilityEvent.TYPES_ALL_MASK
                val eventTypeString = AccessibilityEvent.eventTypeToString(eventType)
                if (eventType == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED ||
                    eventType == AccessibilityEvent.TYPE_WINDOWS_CHANGED) {
                    println("DwnAccessibilityService: Event from $packageName: $eventTypeString")
                    DwnProfilingSDK.checkOverlay(this)
                }
            }

    In accessibility_service_config.xml
         <?xml version="1.0" encoding="utf-8"?>
             <!--
                 EventTypes has to include these 2 types "typeWindowStateChanged|typeWindowsChanged"
                 Flags has to include flagRetrieveInteractiveWindows
             -->
             <accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
                 android:accessibilityEventTypes="typeWindowStateChanged|typeWindowsChanged"
                 android:accessibilityFeedbackType="feedbackGeneric"
                 android:accessibilityFlags="flagRetrieveInteractiveWindows"
                 android:canRetrieveWindowContent="true"
                 android:notificationTimeout="100" />