pass abi parsing errors (or other token init errors) up and show a simple dialog

lib/pages/token_view/sub_widgets/my_token_select_item.dart

@@ -14,6 +14,8 @@ import 'package:stackwallet/utilities/show_loading.dart';
 import 'package:stackwallet/utilities/text_styles.dart';
 import 'package:stackwallet/utilities/theme/stack_colors.dart';
 import 'package:stackwallet/utilities/util.dart';
+import 'package:stackwallet/widgets/desktop/primary_button.dart';
+import 'package:stackwallet/widgets/dialogs/basic_dialog.dart';
 import 'package:stackwallet/widgets/icon_widgets/eth_token_icon.dart';
 import 'package:stackwallet/widgets/rounded_white_container.dart';
 
@@ -36,6 +38,36 @@ class _MyTokenSelectItemState extends ConsumerState<MyTokenSelectItem> {
 
   late final CachedEthTokenBalance cachedBalance;
 
+  Future<bool> _loadTokenWallet(
+    BuildContext context,
+    WidgetRef ref,
+  ) async {
+    try {
+      await ref.read(tokenServiceProvider)!.initialize();
+      return true;
+    } catch (_) {
+      await showDialog<void>(
+        barrierDismissible: false,
+        context: context,
+        builder: (context) => BasicDialog(
+          title: "Failed to load token data",
+          desktopHeight: double.infinity,
+          desktopWidth: 450,
+          rightButton: PrimaryButton(
+            label: "OK",
+            onPressed: () {
+              Navigator.of(context).pop();
+              if (!isDesktop) {
+                Navigator.of(context).pop();
+              }
+            },
+          ),
+        ),
+      );
+      return false;
+    }
+  }
+
   void _onPressed() async {
     ref.read(tokenServiceStateProvider.state).state = EthTokenWallet(
       token: widget.token,
@@ -49,13 +81,17 @@ class _MyTokenSelectItemState extends ConsumerState<MyTokenSelectItem> {
       ),
     );
 
-    await showLoading<void>(
+    final success = await showLoading<bool>(
-      whileFuture: ref.read(tokenServiceProvider)!.initialize(),
+      whileFuture: _loadTokenWallet(context, ref),
       context: context,
       isDesktop: isDesktop,
       message: "Loading ${widget.token.name}",
     );
 
+    if (!success) {
+      return;
+    }
+
     if (mounted) {
       await Navigator.of(context).pushNamed(
         isDesktop ? DesktopTokenView.routeName : TokenView.routeName,

lib/services/ethereum/ethereum_token_service.dart

@@ -253,6 +253,7 @@ class EthTokenWallet extends ChangeNotifier with EthTokenCache {
     );
     _credentials = web3dart.EthPrivateKey.fromHex(privateKey);
 
+    try {
       _deployedContract = web3dart.DeployedContract(
         ContractAbiExtensions.fromJsonList(
           jsonList: tokenContract.abi!,
@@ -260,6 +261,9 @@ class EthTokenWallet extends ChangeNotifier with EthTokenCache {
         ),
         contractAddress,
       );
+    } catch (_) {
+      rethrow;
+    }
 
     try {
       _sendFunction = _deployedContract.function('transfer');
@@ -328,6 +332,7 @@ class EthTokenWallet extends ChangeNotifier with EthTokenCache {
       //====================================================================
     }
 
+    try {
       _deployedContract = web3dart.DeployedContract(
         ContractAbiExtensions.fromJsonList(
           jsonList: tokenContract.abi!,
@@ -335,6 +340,9 @@ class EthTokenWallet extends ChangeNotifier with EthTokenCache {
         ),
         contractAddress,
       );
+    } catch (_) {
+      rethrow;
+    }
 
     _sendFunction = _deployedContract.function('transfer');
 

lib/widgets/wallet_card.dart

@@ -19,6 +19,8 @@ import 'package:stackwallet/utilities/enums/coin_enum.dart';
 import 'package:stackwallet/utilities/show_loading.dart';
 import 'package:stackwallet/utilities/util.dart';
 import 'package:stackwallet/widgets/conditional_parent.dart';
+import 'package:stackwallet/widgets/desktop/primary_button.dart';
+import 'package:stackwallet/widgets/dialogs/basic_dialog.dart';
 import 'package:stackwallet/widgets/rounded_white_container.dart';
 import 'package:stackwallet/widgets/wallet_info_row/wallet_info_row.dart';
 import 'package:tuple/tuple.dart';
@@ -37,7 +39,7 @@ class SimpleWalletCard extends ConsumerWidget {
   final bool popPrevious;
   final NavigatorState? desktopNavigatorState;
 
-  Future<void> _loadTokenWallet(
+  Future<bool> _loadTokenWallet(
     BuildContext context,
     WidgetRef ref,
     Manager manager,
@@ -52,7 +54,31 @@ class SimpleWalletCard extends ConsumerWidget {
       ),
     );
 
+    try {
       await ref.read(tokenServiceProvider)!.initialize();
+      return true;
+    } catch (_) {
+      await showDialog<void>(
+        barrierDismissible: false,
+        context: context,
+        builder: (context) => BasicDialog(
+          title: "Failed to load token data",
+          desktopHeight: double.infinity,
+          desktopWidth: 450,
+          rightButton: PrimaryButton(
+            label: "OK",
+            onPressed: () {
+              Navigator.of(context).pop();
+              Navigator.of(context).pop();
+              if (desktopNavigatorState == null) {
+                Navigator.of(context).pop();
+              }
+            },
+          ),
+        ),
+      );
+      return false;
+    }
   }
 
   void _openWallet(BuildContext context, WidgetRef ref) async {
@@ -91,13 +117,21 @@ class SimpleWalletCard extends ConsumerWidget {
         final contract =
             ref.read(mainDBProvider).getEthContractSync(contractAddress!)!;
 
-        await showLoading<void>(
+        final success = await showLoading<bool>(
-          whileFuture: _loadTokenWallet(context, ref, manager, contract),
+          whileFuture: _loadTokenWallet(
-          context: context,
+              desktopNavigatorState?.context ?? context,
+              ref,
+              manager,
+              contract),
+          context: desktopNavigatorState?.context ?? context,
           opaqueBG: true,
           message: "Loading ${contract.name}",
         );
 
+        if (!success) {
+          return;
+        }
+
         if (desktopNavigatorState == null) {
           // pop loading
           nav.pop();