SecureScreen

SecureScreen is a Kotlin Android app that prevents screenshots and screen recording for selected apps using FLAG_SECURE-based enforcement.

Features

• Select protected apps from installed launchable applications
• Foreground app detection via UsageStatsManager
• Foreground service with persistent notification
• Transparent SecureActivity enforcement with FLAG_SECURE
• Optional watermark overlay with timestamp and session ID
• Settings for watermark toggle, opacity, and aggressive mode flag
• Boot receiver to recover service state after reboot/update

Build

1. Open this project in Android Studio (Jellyfish or newer recommended).
2. Let Gradle sync complete.
3. If gradle-wrapper.jar is missing, run gradle wrapper once from the project root.
4. Run on a physical Android device (Android 8.0+).

Required User Setup

• Grant Usage Access permission in system settings.
• Enable notification permissions on Android 13+ if prompted.
• Grant Overlay permission only if watermark is enabled.