defer fcm token load

android/app/src/main/java/com/keyboardcrumbs/hassclient/MainActivity.java

@@ -35,7 +35,7 @@ public class MainActivity extends FlutterActivity {
                         Context context = getActivity();
                         SharedPreferences.Editor editor = context.getSharedPreferences("FlutterSharedPreferences", Context.MODE_PRIVATE).edit();
                         String token = task.getResult().getToken();
-                        editor.putString("flutter.fcm-token", token);
+                        editor.putString("flutter.push-token", token);
                         editor.commit();
                     }
                 }

lib/managers/app_settings.dart

@@ -20,7 +20,6 @@ class AppSettings {
   String tempToken;
   String oauthUrl;
   String webhookId;
-  String fcmToken;
   double haVersion;
   bool scrollBadges;
   AppTheme appTheme;
@@ -40,7 +39,6 @@ class AppSettings {
     if (full) {
       Logger.d('Loading settings...');
       SharedPreferences prefs = await SharedPreferences.getInstance();
-      fcmToken = prefs.getString('fcm-token');
       _domain = prefs.getString('hassio-domain');
       _port = prefs.getString('hassio-port');
       webhookId = prefs.getString('app-webhook-id');
@@ -69,6 +67,11 @@ class AppSettings {
     }
   }
 
+  Future<dynamic> loadSingle(String key) async {
+    SharedPreferences prefs = await SharedPreferences.getInstance();
+    return prefs.get('$key');
+  }
+
   Future save(Map<String, dynamic> settings) async {
     if (settings != null && settings.isNotEmpty) {
       SharedPreferences prefs = await SharedPreferences.getInstance();

lib/managers/mobile_app_integration_manager.class.dart

@@ -24,94 +24,95 @@ class MobileAppIntegrationManager {
   static Future checkAppRegistration() {
     Completer completer = Completer();
     _appRegistrationData["device_name"] = AppSettings().mobileAppDeviceName ?? getDefaultDeviceName();
-    (_appRegistrationData["app_data"] as Map)["push_token"] = "${AppSettings().fcmToken}";
-    if (AppSettings().webhookId == null) {
-      Logger.d("Mobile app was not registered yet. Registering...");
-      var registrationData = Map.from(_appRegistrationData);
-      registrationData.addAll({
-        "app_id": "ha_client",
-        "app_name": "$appName",
-        "os_name": DeviceInfoManager().osName,
-        "supports_encryption": false,
-      });
-      if (AppSettings().haVersion >= 104) {
+    AppSettings().loadSingle('push-token').then((fcmToken) {
+      (_appRegistrationData["app_data"] as Map)["push_token"] = "$fcmToken";
+      if (AppSettings().webhookId == null) {
+        Logger.d("Mobile app was not registered yet. Registering...");
+        var registrationData = Map.from(_appRegistrationData);
         registrationData.addAll({
-          "device_id": "${DeviceInfoManager().unicDeviceId}"
+          "app_id": "ha_client",
+          "app_name": "$appName",
+          "os_name": DeviceInfoManager().osName,
+          "supports_encryption": false,
+        });
+        if (AppSettings().haVersion >= 104) {
+          registrationData.addAll({
+            "device_id": "${DeviceInfoManager().unicDeviceId}"
+          });
+        }
+        ConnectionManager().sendHTTPPost(
+            endPoint: "/api/mobile_app/registrations",
+            includeAuthHeader: true,
+            data: json.encode(registrationData)
+        ).then((response) {
+          Logger.d("Processing registration responce...");
+          var responseObject = json.decode(response);
+          AppSettings().webhookId = responseObject["webhook_id"];
+          AppSettings().save({
+            'app-webhook-id': responseObject["webhook_id"]
+          }).then((prefs) {
+            completer.complete();
+            eventBus.fire(ShowPopupEvent(
+              popup: Popup(
+                title: "Mobile app Integration was created",
+                body: "HA Client was registered as MobileApp in your Home Assistant. To start using notifications you need to restart your Home Assistant",
+                positiveText: "Restart now",
+                negativeText: "Later",
+                onPositive: () {
+                  ConnectionManager().callService(domain: "homeassistant", service: "restart");
+                },
+              )
+            ));
+          });
+        }).catchError((e) {
+          completer.complete();
+          if (e is http.Response) {
+            Logger.e("Error registering the app: ${e.statusCode}: ${e.body}");
+          } else {
+            Logger.e("Error registering the app: ${e?.toString()}");
+          }
+          _showError();
+        });
+      } else {
+        Logger.d("App was previously registered. Checking...");
+        var updateData = {
+          "type": "update_registration",
+          "data": _appRegistrationData
+        };
+        ConnectionManager().sendHTTPPost(
+            endPoint: "/api/webhook/${AppSettings().webhookId}",
+            includeAuthHeader: false,
+            data: json.encode(updateData)
+        ).then((response) {
+          var registrationData;
+          try {
+            registrationData = json.decode(response);
+          } catch (e) {
+            registrationData = null;
+          }
+          if (registrationData == null || registrationData.isEmpty) {
+            Logger.w("No registration data in response. MobileApp integration was removed or broken");
+            _askToRegisterApp();
+          } else {
+            Logger.d('App registration works fine');
+          }
+          completer.complete();
+        }).catchError((e) {
+          if (e is http.Response && e.statusCode == 410) {
+            Logger.w("MobileApp integration was removed");
+            _askToRegisterApp();
+          } else if (e is http.Response) {
+            Logger.w("Error updating app registration: ${e.statusCode}: ${e.body}");
+            _showError();
+          } else {
+            Logger.w("Error updating app registration: ${e?.toString()}");
+            _showError();
+          }
+          completer.complete();
         });
       }
-      ConnectionManager().sendHTTPPost(
-          endPoint: "/api/mobile_app/registrations",
-          includeAuthHeader: true,
-          data: json.encode(registrationData)
-      ).then((response) {
-        Logger.d("Processing registration responce...");
-        var responseObject = json.decode(response);
-        AppSettings().webhookId = responseObject["webhook_id"];
-        AppSettings().save({
-          'app-webhook-id': responseObject["webhook_id"]
-        }).then((prefs) {
-          completer.complete();
-          eventBus.fire(ShowPopupEvent(
-            popup: Popup(
-              title: "Mobile app Integration was created",
-              body: "HA Client was registered as MobileApp in your Home Assistant. To start using notifications you need to restart your Home Assistant",
-              positiveText: "Restart now",
-              negativeText: "Later",
-              onPositive: () {
-                ConnectionManager().callService(domain: "homeassistant", service: "restart");
-              },
-            )
-          ));
-        });
-      }).catchError((e) {
-        completer.complete();
-        if (e is http.Response) {
-          Logger.e("Error registering the app: ${e.statusCode}: ${e.body}");
-        } else {
-          Logger.e("Error registering the app: ${e?.toString()}");
-        }
-        _showError();
-      });
-      return completer.future;
-    } else {
-      Logger.d("App was previously registered. Checking...");
-      var updateData = {
-        "type": "update_registration",
-        "data": _appRegistrationData
-      };
-      ConnectionManager().sendHTTPPost(
-          endPoint: "/api/webhook/${AppSettings().webhookId}",
-          includeAuthHeader: false,
-          data: json.encode(updateData)
-      ).then((response) {
-        var registrationData;
-        try {
-          registrationData = json.decode(response);
-        } catch (e) {
-          registrationData = null;
-        }
-        if (registrationData == null || registrationData.isEmpty) {
-          Logger.w("No registration data in response. MobileApp integration was removed or broken");
-          _askToRegisterApp();
-        } else {
-          Logger.d('App registration works fine');
-        }
-        completer.complete();
-      }).catchError((e) {
-        if (e is http.Response && e.statusCode == 410) {
-          Logger.w("MobileApp integration was removed");
-          _askToRegisterApp();
-        } else if (e is http.Response) {
-          Logger.w("Error updating app registration: ${e.statusCode}: ${e.body}");
-          _showError();
-        } else {
-          Logger.w("Error updating app registration: ${e?.toString()}");
-          _showError();
-        }
-        completer.complete();
-      });
-      return completer.future;
-    }
+    });
+    return completer.future;
   }
 
   static void _showError() {