扫码拒绝登录后增加刷新按钮，二维码过期后增加刷新操作

lib/bloc/login_qr_cubit.dart

@@ -120,11 +120,18 @@ class LoginQrCubit extends Cubit<LoginQrState> {
       int? errCode = response.errCode;
       if (errCode != null && errCode == 0) {
         _doLogin(response.authCode!);
-      } else {
+      } else if (errCode == -4) {
+        // 用户主动取消
         emit(state.copyWith(
           status: 3,
           tip: '你已取消此次登录',
         ));
+      } else {
+        // 其它非 0 错误码（含二维码过期/超时/网络异常等），引导用户刷新
+        emit(state.copyWith(
+          status: 4,
+          tip: '请刷新二维码，再次登录',
+        ));
       }
     }
   }
@@ -247,6 +254,22 @@ class LoginQrCubit extends Cubit<LoginQrState> {
     router.go('/loginMain');
   }
 
+  void goLoginPhone() {
+    router.go('/loginPhone');
+  }
+
+  /// 刷新二维码：停止当前授权流程并重新走 init() 生成新的二维码
+  Future<void> refresh() async {
+    // 重置为加载中状态（tip 与初次进入区分，避免 Equatable 短路掉相同 state 的 emit）
+    emit(const LoginQrState(status: 0, tip: '正在重新生成二维码...'));
+    try {
+      _fluwx.stopAuthByQRCode();
+    } catch (e) {
+      debugPrint('stopAuthByQRCode error: $e');
+    }
+    await init();
+  }
+
   @override
   Future<void> close() {
     _fluwxCancelable.cancel();

lib/ui/pages/login_v3/login_qr_page_v3.dart

@@ -235,6 +235,126 @@ class LoginQrPageV3 extends StatelessWidget {
               color: Color(0xFF333333),
             ),
           ),
+          SizedBox(height: 20),
+          InkWell(
+            onTap: () {
+              loginQrCubit.refresh();
+            },
+            borderRadius: BorderRadius.circular(25),
+            child: Container(
+              width: 200,
+              height: 50,
+              alignment: Alignment.center,
+              decoration: BoxDecoration(
+                color: Color(0xFF7691FA),
+                borderRadius: BorderRadius.circular(25),
+              ),
+              child: Text(
+                '重新登录',
+                textAlign: TextAlign.center,
+                style: TextStyle(
+                  fontSize: 18,
+                  height: 1.0,
+                  color: Color(0xFFFFFFFF),
+                ),
+              ),
+            ),
+          ),
+        ],
+      );
+    } else if (state.status == 4) {
+      // 二维码过期，提示点击刷新
+      return Column(
+        children: [
+          Container(
+            width: 230,
+            height: 230,
+            padding: EdgeInsets.all(20),
+            decoration: BoxDecoration(
+              border: Border.all(
+                color: Color(0x29265ECF),
+                width: 0.5,
+              ),
+              borderRadius: BorderRadius.circular(20),
+            ),
+            child: Stack(
+              alignment: Alignment.center,
+              children: [
+                Image.memory(
+                  state.image!,
+                  width: 190,
+                  height: 190,
+                ),
+                Container(
+                  width: 190,
+                  height: 190,
+                  color: Color(0xFF000000).withOpacity(0.5),
+                  alignment: Alignment.center,
+                  child: Column(
+                    mainAxisSize: MainAxisSize.min,
+                    children: [
+                      Text(
+                        '二维码已过期',
+                        textAlign: TextAlign.center,
+                        style: TextStyle(
+                          fontSize: 20,
+                          height: 1.0,
+                          fontWeight: FontWeight.bold,
+                          fontFamily: '黑体',
+                          color: Color(0xFFFFFFFF),
+                        ),
+                      ),
+                      SizedBox(height: 12),
+                      InkWell(
+                        onTap: () {
+                          loginQrCubit.refresh();
+                        },
+                        borderRadius: BorderRadius.circular(22),
+                        child: Container(
+                          height: 44,
+                          width: 129,
+                          padding: EdgeInsets.symmetric(horizontal: 16),
+                          alignment: Alignment.center,
+                          decoration: BoxDecoration(
+                            color: Color(0xFF7691FA),
+                            borderRadius: BorderRadius.circular(22),
+                          ),
+                          child: Row(
+                            mainAxisSize: MainAxisSize.min,
+                            mainAxisAlignment: MainAxisAlignment.center,
+                            children: [
+                              Image.asset(
+                                'assets/images/login_v3/refresh_icon.png',
+                              ),
+                              SizedBox(width: 4),
+                              Text(
+                                '点击刷新',
+                                textAlign: TextAlign.center,
+                                style: TextStyle(
+                                  fontSize: 16,
+                                  height: 1.0,
+                                  color: Colors.white,
+                                ),
+                              ),
+                            ],
+                          ),
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              ],
+            ),
+          ),
+          SizedBox(height: 15),
+          Text(
+            state.tip,
+            style: TextStyle(
+              fontSize: 14,
+              height: 1.0,
+              color: Color(0xFF333333),
+            ),
+          ),
         ],
       );
     }