fix：苹果一键登录页面，深浅色

lib/features/auth/application/login_launcher.dart

@@ -8,10 +8,8 @@ import '../../../common/router/app_router.dart';
 import 'auth_controller.dart';
 import 'one_key_login_service.dart';
 
-/// Shared login entry: launch the carrier-owned authorization page first and
-/// use the Flutter SMS page only as a deliberate fallback.
 abstract final class LoginLauncher {
-  static final _service = OneKeyLoginService();
+  static final OneKeyLoginService _service = OneKeyLoginService();
   static bool _starting = false;
 
   static Future<void> start(
@@ -21,71 +19,95 @@ abstract final class LoginLauncher {
   }) async {
     if (_starting) return;
     _starting = true;
-    final dismissLoading = _showLoading(context);
+
+    var loadingVisible = false;
+
+    void showLoading() {
+      if (loadingVisible || !context.mounted) return;
+      loadingVisible = true;
+      unawaited(
+        showDialog<void>(
+          context: context,
+          useRootNavigator: true,
+          barrierDismissible: false,
+          builder: (_) => const PopScope(
+            canPop: false,
+            child: Center(child: CircularProgressIndicator()),
+          ),
+        ),
+      );
+    }
+
+    void dismissLoading() {
+      if (!loadingVisible || !context.mounted) return;
+      loadingVisible = false;
+      Navigator.of(context, rootNavigator: true).pop();
+    }
+
     try {
       final observer = _OneKeyLoginLifecycleObserver(_service);
-      WidgetsBinding.instance.addObserver(observer);
+      var observerAdded = false;
       late final OneKeyLoginOutcome outcome;
       try {
+        WidgetsBinding.instance.addObserver(observer);
+        observerAdded = true;
+        // Carrier-auth initialization only begins after this explicit login
+        // action. Keep the loading indicator visible while the native SDK
+        // determines whether one-key login can be launched.
+        showLoading();
         outcome = await _service.start(
           context: context,
           verifyToken: ref.read(authProvider.notifier).verifyOneKeyLogin,
+          // The native carrier page follows the device, while linked H5 pages
+          // retain the appearance selected inside the app.
+          appIsDark: Theme.of(context).brightness == Brightness.dark,
+          nativeIsDark:
+              MediaQuery.platformBrightnessOf(context) == Brightness.dark,
           onNativeRequestDispatched: dismissLoading,
           onAuthPageOpened: dismissLoading,
         );
-      } catch (_) {
-        outcome = OneKeyLoginOutcome.fallback;
       } finally {
-        WidgetsBinding.instance.removeObserver(observer);
+        dismissLoading();
+        if (observerAdded) WidgetsBinding.instance.removeObserver(observer);
       }
+
       if (!context.mounted) return;
-      if (outcome == OneKeyLoginOutcome.success) {
-        context.go(next?.isNotEmpty == true ? next! : AppRoutes.profile);
-        return;
-      }
-      if (outcome == OneKeyLoginOutcome.fallback ||
-          outcome == OneKeyLoginOutcome.unsupported) {
-        final target = next == null || next.isEmpty
-            ? AppRoutes.login
-            : '${AppRoutes.login}?next=${Uri.encodeComponent(next)}';
-        if (GoRouterState.of(context).matchedLocation != AppRoutes.login) {
-          await context.push(target);
-        }
+      switch (outcome) {
+        case OneKeyLoginOutcome.success:
+          if (next != null && next.isNotEmpty) GoRouter.of(context).go(next);
+          return;
+        case OneKeyLoginOutcome.cancelled:
+        case OneKeyLoginOutcome.busy:
+          return;
+        case OneKeyLoginOutcome.fallback:
+        case OneKeyLoginOutcome.unsupported:
+          await openSmsLogin(context, next: next);
       }
     } finally {
-      dismissLoading();
       _starting = false;
     }
   }
+}
 
-  static VoidCallback _showLoading(BuildContext context) {
-    var visible = true;
-    unawaited(
-      showDialog<void>(
-        context: context,
-        useRootNavigator: true,
-        barrierDismissible: false,
-        builder: (_) => const PopScope(
-          canPop: false,
-          child: Center(child: CircularProgressIndicator()),
-        ),
-      ),
-    );
-    return () {
-      if (visible && context.mounted) {
-        Navigator.of(context, rootNavigator: true).pop();
-      }
-      visible = false;
-    };
-  }
+Future<void> openSmsLogin(
+  BuildContext context, {
+  String? next,
+  Future<void> Function()? onReturn,
+}) async {
+  if (!context.mounted) return;
+  if (GoRouterState.of(context).matchedLocation == AppRoutes.login) return;
+  final location = next == null || next.isEmpty
+      ? AppRoutes.login
+      : '${AppRoutes.login}?next=${Uri.encodeComponent(next)}';
+  await GoRouter.of(context).push(location);
+  if (context.mounted) await onReturn?.call();
 }
 
 class _OneKeyLoginLifecycleObserver with WidgetsBindingObserver {
-  _OneKeyLoginLifecycleObserver(this._service);
-  final OneKeyLoginService _service;
-
+  _OneKeyLoginLifecycleObserver(this.service);
+  final OneKeyLoginService service;
   @override
   void didChangeAppLifecycleState(AppLifecycleState state) {
-    if (state == AppLifecycleState.resumed) _service.onAppResumed();
+    if (state == AppLifecycleState.resumed) service.onAppResumed();
   }
 }