支持备线切换

lib/ui/home/home_ui_model.dart

@@ -113,11 +113,7 @@ class HomeUIModel extends BaseUIModel {
               .data));
       countdownFestivalListData = await Api.getFestivalCountdownList();
       notifyListeners();
-      try {
-        _loadRRS();
-      } catch (e) {
-        dPrint("_loadRRS Error:$e");
-      }
+      _loadRRS();
     } catch (e) {
       dPrint(e);
     }
@@ -139,6 +135,12 @@ class HomeUIModel extends BaseUIModel {
     appUpdateTimer = Timer.periodic(const Duration(minutes: 30), (timer) {
       _checkLocalizationUpdate();
     });
+    Future.delayed(const Duration(milliseconds: 100)).then((value) {
+      if (URLConf.isUsingFallback) {
+        if (!mounted) return;
+        showToast(context!, "因源服务器异常（机房故障或遭受攻击），当前正在使用备用线路，可能会出现访问速度下降，敬请谅解。");
+      }
+    });
     super.initModel();
   }
 
@@ -187,13 +189,17 @@ class HomeUIModel extends BaseUIModel {
   }
 
   Future _loadRRS() async {
-    final v = await RSSApi.getRssVideo();
-    rssVideoItems = v;
-    notifyListeners();
-    final t = await RSSApi.getRssText();
-    rssTextItems = t;
-    notifyListeners();
-    dPrint("RSS update Success !");
+    try {
+      final v = await RSSApi.getRssVideo();
+      rssVideoItems = v;
+      notifyListeners();
+      final t = await RSSApi.getRssText();
+      rssTextItems = t;
+      notifyListeners();
+      dPrint("RSS update Success !");
+    } catch (e) {
+      dPrint("_loadRRS Error:$e");
+    }
   }
 
   VoidCallback? doCheck() {

lib/ui/home/webview/webview.dart

@@ -207,7 +207,7 @@ class WebViewModel {
 
     /// https://github.com/CxJuice/Uex_Chinese_Translate
     // get versions
-    const hostUrl = URLConf.webTranslateHomeUrl;
+    final hostUrl = URLConf.webTranslateHomeUrl;
     dPrint("AppWebLocalizationVersionsData === ${v.toJson()}");
 
     localizationResource["zh-CN"] = await _getJson("$hostUrl/zh-CN-rsi.json",