link_cubit 增加状态判断

lib/bloc/link_cubit.dart

@@ -70,7 +70,10 @@ class LinkCubit extends Cubit<LinkState> {
               final pageTitle = await _controller.runJavaScriptReturningResult('document.title') as String?;
               final pageTitle = await _controller.runJavaScriptReturningResult('document.title') as String?;
               // 移除可能存在的引号
               // 移除可能存在的引号
               final cleanTitle = pageTitle?.replaceAll('"', '');
               final cleanTitle = pageTitle?.replaceAll('"', '');
-              emit(state.copyWith(title: cleanTitle ?? ''));
+              // 检查 Cubit 是否已关闭，避免调用 emit 时抛出异常
+              if (!isClosed) {
+                emit(state.copyWith(title: cleanTitle ?? ''));
+              }
             }
             }
 
 
             _finishLoading();
             _finishLoading();
@@ -100,7 +103,10 @@ class LinkCubit extends Cubit<LinkState> {
   }
   }
 
 
   void _finishLoading() {
   void _finishLoading() {
-    emit(state.copyWith(loaded: true));
+    // 检查 Cubit 是否已关闭，避免调用 emit 时抛出异常
+    if (!isClosed) {
+      emit(state.copyWith(loaded: true));
+    }
   }
   }
 
 
   // 设置屏幕方向
   // 设置屏幕方向