feat(banner): expose windowFullscreen setting on android bridge

android/src/main/kotlin/com/usercentrics/sdk/flutter/serializer/GeneralStyleSettingsSerializer.kt

@@ -23,5 +23,6 @@ internal fun Any?.deserializeGeneralStyleSettings(
         font = this["font"].deserializeBannerFont(assetsProvider, activityProvider),
         links = this["links"].deserializeLegalLinksSettings(),
         disableSystemBackButton = this["disableSystemBackButton"] as? Boolean,
+        windowFullscreen = this["windowFullscreen"] as? Boolean,
     )
 }

example/android/app/src/main/kotlin/com/usercentrics/sdk/flutter_example/MainActivity.kt

@@ -1,6 +1,12 @@
 package com.usercentrics.sdk.flutter_example
 
+import android.os.Bundle
+import androidx.core.view.WindowCompat
 import io.flutter.embedding.android.FlutterActivity
 
 class MainActivity: FlutterActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        WindowCompat.setDecorFitsSystemWindows(window, false)
+    }
 }

example/lib/main.dart

@@ -6,6 +6,7 @@ import 'package:usercentrics_sdk/usercentrics_sdk.dart';
 import 'build_your_own_ui.dart';
 import 'customization_example_1.dart';
 import 'customization_example_2.dart';
+import 'window_fullscreen_example.dart';
 
 // Build-time flag — shows the consent mediation toggle when true.
 // Usage: flutter run --dart-define=MEDIATION_TEST=true
@@ -212,6 +213,14 @@ class HomePageState extends State<HomePage> {
                   : null,
               child: const Text("Customization Example 2"),
             ),
+            ElevatedButton(
+              onPressed: isSdkReady
+                  ? () => _showFirstLayer(
+                        settings: bannerSettingsWindowFullscreenExample,
+                      )
+                  : null,
+              child: const Text("Window Fullscreen (Android)"),
+            ),
             ElevatedButton(
               onPressed: isSdkReady
                   ? () => Navigator.push(

example/lib/window_fullscreen_example.dart

@@ -0,0 +1,12 @@
+import 'package:usercentrics_sdk/usercentrics_sdk.dart';
+
+// MSDK-4637: exercises the windowFullscreen backward-compat workaround
+// (Android only) — see https://usercentrics.atlassian.net/browse/MSDK-4637
+const bannerSettingsWindowFullscreenExample = BannerSettings(
+  firstLayer: FirstLayerStyleSettings(
+    layout: UsercentricsLayout.full,
+  ),
+  general: GeneralStyleSettings(
+    windowFullscreen: true,
+  ),
+);

lib/src/internal/serializer/general_style_settings_serializer.dart

@@ -22,6 +22,7 @@ class GeneralStyleSettingsSerializer {
           'logo': value.logo?.assetPath,
           'links': LegalLinksSettingsSerializer.serialize(value.links),
           'disableSystemBackButton': value.disableSystemBackButton,
+          'windowFullscreen': value.windowFullscreen,
         };
 
   static dynamic _serializeFont(BannerFont? customFont) {

lib/src/model/general_style_settings.dart

@@ -17,6 +17,7 @@ class GeneralStyleSettings {
     this.logo,
     this.links,
     this.disableSystemBackButton,
+    this.windowFullscreen,
   });
 
   /// The text color.
@@ -51,6 +52,11 @@ class GeneralStyleSettings {
 
   final bool? disableSystemBackButton;
 
+  /// Android-only. Backward-compat workaround for publishers who relied on the
+  /// legacy fullscreen dialog behavior prior to the edge-to-edge fix. Has no
+  /// effect on iOS.
+  final bool? windowFullscreen;
+
   @override
   bool operator ==(Object other) =>
       identical(this, other) ||
@@ -67,7 +73,8 @@ class GeneralStyleSettings {
           font == other.font &&
           logo == other.logo &&
           links == other.links &&
-          disableSystemBackButton == other.disableSystemBackButton;
+          disableSystemBackButton == other.disableSystemBackButton &&
+          windowFullscreen == other.windowFullscreen;
 
   @override
   int get hashCode =>
@@ -81,11 +88,12 @@ class GeneralStyleSettings {
       font.hashCode ^
       logo.hashCode ^
       links.hashCode ^
-      disableSystemBackButton.hashCode;
+      disableSystemBackButton.hashCode ^
+      windowFullscreen.hashCode;
 
   @override
   String toString() {
-    return 'GeneralStyleSettings{textColor: $textColor, layerBackgroundColor: $layerBackgroundColor, layerBackgroundSecondaryColor: $layerBackgroundSecondaryColor, linkColor: $linkColor, tabColor: $tabColor, bordersColor: $bordersColor, toggleStyleSettings: $toggleStyleSettings, font: $font, logo: $logo, links: $links, disableSystemBackButton: $disableSystemBackButton}';
+    return 'GeneralStyleSettings{textColor: $textColor, layerBackgroundColor: $layerBackgroundColor, layerBackgroundSecondaryColor: $layerBackgroundSecondaryColor, linkColor: $linkColor, tabColor: $tabColor, bordersColor: $bordersColor, toggleStyleSettings: $toggleStyleSettings, font: $font, logo: $logo, links: $links, disableSystemBackButton: $disableSystemBackButton, windowFullscreen: $windowFullscreen}';
   }
 }
 

test/internal/bridge/show_first_layer_bridge_test.mock.dart

@@ -116,6 +116,7 @@ const expectedArguments = {
       'logo': 'images/flutter-logo.png',
       'links': 'BOTH',
       'disableSystemBackButton': false,
+      'windowFullscreen': null,
     },
     "variantName": "variantA",
     "initCustomization": null

test/internal/bridge/show_second_layer_bridge_test.mock.dart

@@ -91,7 +91,8 @@ const expectedArguments = {
       },
       'logo': 'images/flutter-logo.png',
       'links': 'HIDDEN',
-      'disableSystemBackButton': false
+      'disableSystemBackButton': false,
+      'windowFullscreen': null
     },
     "variantName": 'variantA',
     "initCustomization": {