fix: Fixes polkawallet-io#30. Return empty string not null when inval…

…id custom type s and no remote node

lib/page/assets/index.dart

@@ -318,7 +318,7 @@ class _AssetsState extends State<Assets> {
     return Observer(
       builder: (_) {
         String symbol = store.settings.networkState.tokenSymbol;
-        String networkName = store.settings.networkName;
+        String networkName = store.settings.networkName ?? '';
         return RefreshIndicator(
           key: globalBalanceRefreshKey,
           onRefresh: _fetchBalance,

pubspec.lock

@@ -234,7 +234,7 @@ packages:
       name: flutter_mobx
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.7"
+    version: "1.1.0"
   flutter_plugin_android_lifecycle:
     dependency: transitive
     description:
@@ -419,14 +419,14 @@ packages:
       name: mobx
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.0+4"
+    version: "1.2.0"
   mobx_codegen:
     dependency: "direct main"
     description:
       name: mobx_codegen
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.13"
+    version: "1.1.0"
   node_interop:
     dependency: transitive
     description:

pubspec.yaml

@@ -21,9 +21,9 @@ dependencies:
   # intl - format numbers
   intl: ^0.16.0
   # state management with mobx & provider
-  mobx: ^0.4.0
-  flutter_mobx: ^0.3.6
-  mobx_codegen: ^0.3.12
+  mobx: ^1.2.0
+  flutter_mobx: ^1.1.0
+  mobx_codegen: ^1.1.0
   provider: ^3.1.0
   json_serializable: ^3.0.0
   shared_preferences: ^0.5.6