Resolves #401 Fix login restart and several login views opened

flutter_03.log

@@ -0,0 +1,41 @@
+Flutter crash report; please file at https://github.com/flutter/flutter/issues.
+
+## command
+
+flutter --no-color run --machine --track-widget-creation --device-id=89AY052S4 lib/main.dart
+
+## exception
+
+_InternalLinkedHashMap<String, dynamic>: {code: 105, message: Isolate must be runnable, data: {request: {method: _reloadSources, params: {pause: true, rootLibUri: file:///data/user/0/com.keyboardcrumbs.haclient/code_cache/ha_clientLNSJAH/ha_client/lib/main.dart.incremental.dill, packagesUri: file:///data/user/0/com.keyboardcrumbs.haclient/code_cache/ha_clientLNSJAH/ha_client/.packages, isolateId: isolates/866521062}}, details: Isolate must be runnable before this request is made.}}
+
+```
+null```
+
+## flutter doctor
+
+```
+[✓] Flutter (Channel stable, v1.7.8+hotfix.4, on Linux, locale en_US.UTF-8)
+    • Flutter version 1.7.8+hotfix.4 at /home/estevez/sdk/flutter
+    • Framework revision 20e59316b8 (6 weeks ago), 2019-07-18 20:04:33 -0700
+    • Engine revision fee001c93f
+    • Dart version 2.4.0
+
+[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
+    • Android SDK at /home/estevez/Android/Sdk
+    • Android NDK location not configured (optional; useful for native profiling support)
+    • Platform android-29, build-tools 29.0.2
+    • Java binary at: /home/estevez/bin/android-studio/jre/bin/java
+    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b49-5587405)
+    • All Android licenses accepted.
+
+[✓] Android Studio (version 3.5)
+    • Android Studio at /home/estevez/bin/android-studio
+    • Flutter plugin version 38.2.3
+    • Dart plugin version 191.8423
+    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b49-5587405)
+
+[✓] Connected device (1 available)
+    • Pixel 3 XL • 89AY052S4 • android-arm64 • Android 9 (API 28)
+
+• No issues found!
+```

lib/main.dart

@@ -176,8 +176,7 @@ class HAClientApp extends StatelessWidget {
               FlatButton(
                 child: Text("Manual", style: TextStyle(color: Colors.white)),
                 onPressed: () {
-                  Navigator.of(context).pop();
+                  eventBus.fire(ShowPageEvent(path: "/connection-settings", goBackFirst: true));
-                  Navigator.of(context).pushNamed("/connection-settings");
                 },
               )
             ],
@@ -212,6 +211,7 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver, Ticker
   StreamSubscription _showPageSubscription;
   int _previousViewCount;
   bool _showLoginButton = false;
+  bool _preventAppRefresh = false;
 
   @override
   void initState() {
@@ -255,6 +255,7 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver, Ticker
     _settingsSubscription = eventBus.on<SettingsChangedEvent>().listen((event) {
       Logger.d("Settings change event: reconnect=${event.reconnect}");
       if (event.reconnect) {
+        _preventAppRefresh = false;
         _fullLoad();
       }
     });
@@ -332,7 +333,7 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver, Ticker
   @override
   void didChangeAppLifecycleState(AppLifecycleState state) {
     Logger.d("$state");
-    if (state == AppLifecycleState.resumed && ConnectionManager().settingsLoaded) {
+    if (state == AppLifecycleState.resumed && ConnectionManager().settingsLoaded && !_preventAppRefresh) {
       _quickLoad();
     }
   }
@@ -411,7 +412,7 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver, Ticker
     if (_showPageSubscription == null) {
       _showPageSubscription =
           eventBus.on<ShowPageEvent>().listen((event) {
-            _showPage(event.path);
+            _showPage(event.path, event.goBackFirst);
           });
     }
 
@@ -429,6 +430,7 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver, Ticker
         if (event.showButton) {
           _showOAuth();
         } else {
+          _preventAppRefresh = false;
           Navigator.of(context).pop();
         }
       });
@@ -442,6 +444,7 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver, Ticker
   }
 
   void _showOAuth() {
+    _preventAppRefresh = true;
     Navigator.of(context).pushNamed('/login');
   }
 
@@ -509,7 +512,10 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver, Ticker
     );
   }
 
-  void _showPage(String path) {
+  void _showPage(String path, bool goBackFirst) {
+    if (goBackFirst) {
+      Navigator.pop(context);
+    }
     Navigator.pushNamed(
         context,
         path

lib/managers/startup_user_messages_manager.class.dart

@@ -59,7 +59,7 @@ class StartupUserMessagesManager {
         onPositive: () {
           SharedPreferences.getInstance().then((prefs) {
             prefs.setBool(_supportAppDevelopmentMessageKey, true);
-            eventBus.fire(ShowPageEvent("/configuration"));
+            eventBus.fire(ShowPageEvent(path: "/configuration"));
           });
         },
         onNegative: () {

lib/utils.class.dart

@@ -200,9 +200,10 @@ class ShowEntityPageEvent {
 }
 
 class ShowPageEvent {
-  String path;
+  final String path;
+  final bool goBackFirst;
 
-  ShowPageEvent(this.path);
+  ShowPageEvent({@required this.path, this.goBackFirst: false});
 }
 
 class ShowErrorEvent {