link_cubit 增加状态判断

lib/bloc/link_cubit.dart

@@ -70,8 +70,11 @@ 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('"', '');
+              // 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 ?? ''));
                 emit(state.copyWith(title: cleanTitle ?? ''));
               }
               }
+            }
 
 
             _finishLoading();
             _finishLoading();
           },
           },
@@ -100,8 +103,11 @@ class LinkCubit extends Cubit<LinkState> {
   }
   }
 
 
   void _finishLoading() {
   void _finishLoading() {
+    // 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));
       emit(state.copyWith(loaded: true));
     }
     }
+  }
 
 
   // 设置屏幕方向
   // 设置屏幕方向
   void _setOrientation(int screenType) {
   void _setOrientation(int screenType) {