UI/connectivity warning

packages/uni_app/lib/generated/intl/messages_all.dart

@@ -38,8 +38,9 @@ MessageLookupByLibrary? _findExact(String localeName) {
 /// User programs should call this before using [localeName] for messages.
 Future<bool> initializeMessages(String localeName) async {
   var availableLocale = Intl.verifiedLocale(
-      localeName, (locale) => _deferredLibraries[locale] != null,
-      onFailure: (_) => null);
+    localeName,
+    (locale) => _deferredLibraries[locale] != null,
+    onFailure: (_) => null);
   if (availableLocale == null) {
     return new Future.value(false);
   }
@@ -59,8 +60,8 @@ bool _messagesExistFor(String locale) {
 }
 
 MessageLookupByLibrary? _findGeneratedMessagesFor(String locale) {
-  var actualLocale =
-      Intl.verifiedLocale(locale, _messagesExistFor, onFailure: (_) => null);
+  var actualLocale = Intl.verifiedLocale(locale, _messagesExistFor,
+      onFailure: (_) => null);
   if (actualLocale == null) return null;
   return _findExact(actualLocale);
 }

packages/uni_app/lib/l10n/intl_en.arb

@@ -332,6 +332,6 @@
   "@fail_to_authenticate": {},
   "wrong_credentials_exception": "Invalid credentials",
   "@wrong_credentials_exception": {},
-  "internet_status_exception": "Check your internet connection",
+  "internet_status_exception": "Attention: No internet connection",
   "@internet_status_exception": {}
 }

packages/uni_app/lib/l10n/intl_pt_PT.arb

@@ -332,6 +332,6 @@
   "@fail_to_authenticate": {},
   "wrong_credentials_exception": "Credenciais inválidas",
   "@wrong_credentials_exception": {},
-  "internet_status_exception": "Verifique sua conexão com a internet",
+  "internet_status_exception": "Atenção: Sem conexão à internet",
   "@internet_status_exception": {}
 }

packages/uni_app/lib/view/common_widgets/connectivity_warning_card.dart

@@ -0,0 +1,70 @@
+import 'dart:async';
+
+import 'package:connectivity_plus/connectivity_plus.dart';
+import 'package:flutter/material.dart';
+
+import '../../generated/l10n.dart';
+
+class ConnectivityWarning extends StatefulWidget {
+  const ConnectivityWarning({super.key});
+
+  @override
+  State<ConnectivityWarning> createState() => _ConnectivityWarningState();
+}
+
+class _ConnectivityWarningState extends State<ConnectivityWarning> {
+  bool isOffline = false;
+
+  StreamSubscription<ConnectivityResult>? connectivitySubscription;
+
+  @override
+  void initState() {
+    super.initState();
+    checkInitialConnection();
+
+    connectivitySubscription = Connectivity()
+        .onConnectivityChanged
+        .listen((result) {
+          setState(() {
+            isOffline = result == ConnectivityResult.none;
+          });
+    });
+  }
+
+   Future<void> checkInitialConnection() async {
+    final result = await Connectivity().checkConnectivity();
+    setState(() {
+      isOffline = result == ConnectivityResult.none;
+    });
+   }
+
+  @override
+  void dispose() {
+    connectivitySubscription?.cancel();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Visibility(
+      visible: isOffline,
+      child: Container(
+        padding: const EdgeInsets.symmetric(vertical: 4, horizontal: 18),
+        child: Row(
+          children: [
+            Icon(
+              Icons.info_outline,
+              color: Theme.of(context).primaryColor,
+              size: 21,
+            ),
+            const SizedBox(width: 8),
+            Text(
+              S.of(context).internet_status_exception,
+              style: Theme.of(context).textTheme.bodyMedium,
+              ),
+          ],
+        ),
+      ),
+    );
+  }
+}

packages/uni_app/lib/view/common_widgets/pages_layouts/general/widgets/top_navigation_bar.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:uni/view/common_widgets/connectivity_warning_card.dart';
 import 'package:uni/view/common_widgets/page_title.dart';
 
 class AppTopNavbar extends StatelessWidget implements PreferredSizeWidget {
@@ -16,29 +17,34 @@ class AppTopNavbar extends StatelessWidget implements PreferredSizeWidget {
   final Widget? leftButton;
 
   Widget _createTopWidgets(BuildContext context) {
-    return Padding(
-      padding: EdgeInsets.fromLTRB(leftButton == null ? 20 : 12, 0, 20, 0),
-      child: Row(
-        children: [
-          if (leftButton != null)
-            Padding(
-              padding: const EdgeInsets.only(right: 8),
-              child: leftButton,
-            ),
-          Expanded(
-            child: PageTitle(
-              name: title ?? '',
-              pad: false,
-              center: false,
+    return Column(
+      children: [
+        Padding(
+            padding: EdgeInsets.fromLTRB(leftButton == null ? 20 : 12, 0, 20, 0),
+            child: Row(
+              children: [
+                if (leftButton != null)
+                  Padding(
+                    padding: const EdgeInsets.only(right: 8),
+                    child: leftButton,
+                  ),
+                Expanded(
+                  child: PageTitle(
+                    name: title ?? '',
+                    pad: false,
+                    center: false,
+                  ),
+                ),
+                if (rightButton != null)
+                  Padding(
+                    padding: const EdgeInsets.only(left: 8),
+                    child: rightButton,
+                  ),
+              ],
             ),
           ),
-          if (rightButton != null)
-            Padding(
-              padding: const EdgeInsets.only(left: 8),
-              child: rightButton,
-            ),
-        ],
-      ),
+        const ConnectivityWarning(),
+      ],
     );
   }