Enable secure screen when incognito mode is enabled (#5339)

* Enable secure screen when incognito mode is enabled

* Fix incognito banner not showing up after configuration changes

app/src/main/java/eu/kanade/tachiyomi/ui/security/SecureActivityDelegate.kt

@@ -1,11 +1,11 @@
 package eu.kanade.tachiyomi.ui.security
 
 import android.content.Intent
-import android.view.WindowManager
 import androidx.fragment.app.FragmentActivity
 import androidx.lifecycle.lifecycleScope
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.util.system.AuthenticatorUtil
+import eu.kanade.tachiyomi.util.view.setSecureScreen
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import uy.kohesive.injekt.injectLazy
@@ -17,13 +17,7 @@ class SecureActivityDelegate(private val activity: FragmentActivity) {
 
     fun onCreate() {
         preferences.secureScreen().asFlow()
-            .onEach {
-                if (it) {
-                    activity.window.setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE)
-                } else {
-                    activity.window.clearFlags(WindowManager.LayoutParams.FLAG_SECURE)
-                }
-            }
+            .onEach { activity.window.setSecureScreen(it || preferences.incognitoMode().get()) }
             .launchIn(activity.lifecycleScope)
     }