Exception: type 'Null' is not a subtype of type 'String' in type cast on v.5.2.0 only on iOS #738
Comments
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👀 We've just linked this issue to our internal tracker and notified the team. Thank you for reporting, we're checking this out! |
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Downgrading to version 4.13.0 of purchases_flutter resolves the issue |
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Thank you for posting this. I was really heading down the rabbit hole. For me I just had to change pubspec.yaml to "5.1.0" not "^5.1.0" to avoid 5.2.0 |
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Hi @akarapetsas, thanks for reporting this! We've been able to confirm the issue in our 5.2.0 SDK and are working on a fix. In the meantime, we suggest making sure you're using 5.1.0 or a previous version. Will update this issue once the release is out! |
### Description Reported in RevenueCat/purchases-flutter#738. After #2654, we were using the new Google Play identifiers that include the plan id in expiration dates, but we didn't change the system that parses purchase dates. Later on, when we map purchases, we iterate over the expiration dates map, and since that id wasn't found in the purchase dates, it was null, causing the issue in flutter. This makes the purchase date calculation use the same algorithm that we use for expiration dates to get the new google play product identifiers.
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Hi @akarapetsas and @reimager. We narrowed down the issue to users with android purchases using the app in iOS. We just released version 5.2.1 of the flutter SDK which solves this issue. Please try it and let us know the results! |
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I can confirm that 5.2.1 has solved the issue for me! Thank you! I don't know if the users I was testing with had any purchases on android, but I certainly test with same users on both so possibly in the past. Regardless, I have no exceptions now on IOS. |
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Yeah, it can happen with purchases in the past. Glad that it worked for you! I'm going to close this but please reopen if needed. |
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Environment
flutter doctor[✓] Flutter (Channel stable, 3.10.5, on macOS 13.4 22F66 darwin-arm64, locale en-DE)
• Flutter version 3.10.5 on channel stable at /opt/homebrew/Caskroom/flutter/3.7.6/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 796c8ef792 (11 days ago), 2023-06-13 15:51:02 -0700
• Engine revision 45f6e00911
• Dart version 3.0.5
• DevTools version 2.23.1
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.2)
• Android SDK at /Users/alexioskarapetsas/Library/Android/sdk
• Platform android-33, build-tools 33.0.2
• Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 14.3.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 14E300c
• CocoaPods version 1.12.0
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 2022.2)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)
[✓] Connected device (3 available)
• iPhone (mobile) • 00008101-000649190198001E • ios • iOS 16.5.1 20F75
• macOS (desktop) • macos • darwin-arm64 • macOS 13.4 22F66 darwin-arm64
• Chrome (web) • chrome • web-javascript • Google Chrome 114.0.5735.133
[✓] Network resources
• All expected network resources are available.
• No issues found!
Process finished with exit code 0
purchases-flutter=> 5.2.0Other information (e.g. stacktraces, related issues, suggestions how to fix, links for us to have context, eg. stackoverflow, etc.)
Stacktrace:
2023-06-25 10:28:04.722650+0200 Runner[2247:349369] [VERBOSE-2:dart_vm_initializer.cc(41)] Unhandled Exception: type 'Null' is not a subtype of type 'String' in type cast
#0 new LinkedHashMap.from. (dart:collection/linked_hash_map.dart:187)
#1 _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:625)
#2 new LinkedHashMap.from (dart:collection/linked_hash_map.dart:186)
#3 _$$_CustomerInfoFromJson (package:purchases_flutter/models/customer_info_wrapper.g.dart:12)
#4 new _$_CustomerInfo.fromJson (package:purchases_flutter/models/customer_info_wrapper.freezed.dart:332)
#5 _$CustomerInfoFromJson (package:purchases_flutter/models/customer_info_wrapper.freezed.dart:18)
#6 new CustomerInfo.fromJson (package:purchases_flutter/models/customer_info_wrapper.dart:66)
#7 Purchases.getCustomerInfo (package:purchases_flutter/purchases_flutter.dart:561)
#8 Payments.isUserPremium (package:flutter_app/utils/payments.dart:23)
#9 Utils.canAccessContent (package:flutter_app/utils/utils.dart:16)
#10 _ContentRowWidgetState.build.. (package:flutter_app/utils/column_audio_list.dart:77)
Describe the bug
I've updated the purchases_flutter package and I constantly get the exception described on the stacktrace above. And I can't get the info for the user on iOS (if has bought subscription etc). On android it works fine though.
Additional context
Add any other context about the problem here.
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