Fix lock bypass through floating window, multi window

Author: PranavPurwar

app/src/main/java/dev/pranav/applock/features/lockscreen/ui/PasswordOverlayScreen.kt

@@ -136,19 +136,28 @@ class PasswordOverlayActivity : FragmentActivity() {
         }
     }
 
+    
     private fun setupWindow() {
         window.addFlags(
             WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON or
-                    WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON or
-                    WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
+            WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON or
+            WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON or
+            WindowManager.LayoutParams.FLAG_SECURE
         )
+
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
             setShowWhenLocked(true)
             setTurnScreenOn(true)
         }
+        
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
+            window.setHideOverlayWindows(true)
+        }
+
 
         val layoutParams = window.attributes
-        layoutParams.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY
+        layoutParams.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY 
+        
         if (appLockRepository.shouldUseMaxBrightness()) {
             layoutParams.screenBrightness = WindowManager.LayoutParams.BRIGHTNESS_OVERRIDE_FULL
         }