feat(visionos): ui-mobile-base supporting xros plus improvements to window handling (#10478)

packages/core/utils/ios/index.ts

@@ -1,6 +1,7 @@
 import { Color } from '../../color';
 import { Trace } from '../../trace';
 import { CORE_ANIMATION_DEFAULTS, getDurationWithDampingFromSpring } from '../common';
+import { SDK_VERSION } from '../constants';
 
 declare let UIImagePickerControllerSourceType: any;
 
@@ -63,6 +64,14 @@ export function getRootViewController(): UIViewController {
 }
 
 export function getWindow(): UIWindow {
+	let window: UIWindow;
+	if (SDK_VERSION >= 15) {
+		// UIWindowScene.keyWindow is only available 15+
+		window = NativeScriptViewFactory.getKeyWindow();
+	}
+	if (window) {
+		return window;
+	}
 	const app = UIApplication.sharedApplication;
 	if (!app) {
 		return;
@@ -70,6 +79,11 @@ export function getWindow(): UIWindow {
 	return app.keyWindow || (app.windows && app.windows.count > 0 && app.windows.objectAtIndex(0));
 }
 
+export function getMainScreen(): UIScreen {
+	const window = getWindow();
+	return window ? window.screen : UIScreen.mainScreen;
+}
+
 export function setWindowBackgroundColor(value: string) {
 	const win = getWindow();
 	if (win) {
@@ -158,9 +172,7 @@ export function createUIDocumentInteractionControllerDelegate(): NSObject {
 		public static ObjCProtocols = [UIDocumentInteractionControllerDelegate];
 
 		public getViewController(): UIViewController {
-			const app = UIApplication.sharedApplication;
-
-			return app.keyWindow.rootViewController;
+			return getWindow().rootViewController;
 		}
 
 		public documentInteractionControllerViewControllerForPreview(controller: UIDocumentInteractionController) {

packages/core/utils/layout-helper/index.ios.ts

@@ -1,4 +1,5 @@
 import * as layoutCommon from './layout-helper-common';
+import { getMainScreen } from '../ios';
 
 export namespace layout {
 	// cache the MeasureSpec constants here, to prevent extensive marshaling calls to and from Objective C
@@ -32,15 +33,15 @@ export namespace layout {
 	}
 
 	export function getDisplayDensity(): number {
-		return UIScreen.mainScreen.scale;
+		return getMainScreen().scale;
 	}
 
 	export function toDevicePixels(value: number): number {
-		return value * UIScreen.mainScreen.scale;
+		return value * getMainScreen().scale;
 	}
 
 	export function toDeviceIndependentPixels(value: number): number {
-		return value / UIScreen.mainScreen.scale;
+		return value / getMainScreen().scale;
 	}
 
 	export function round(value: number) {