Type Null is not a subtype of string in hive type adapter.

[incrediblezayed]

Steps to Reproduce

1. Create a model class.
2. Generate & Register the type adapter
3. Open the box for that type.

Code sample

@HiveType(typeId: 0)
class UserModel {
  @HiveField(0)
  String id;

  @HiveField(1)
  String username;

  @HiveField(2)
  String displayName;

  @HiveField(3)
  String email;

  @HiveField(4)
  String phoneNumber;
  UserModel({
    required this.id,
    required this.username,
    required this.displayName,
    required this.email,
    required this.phoneNumber,
  });
}

Log:
E/flutter (29302): [ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: type 'Null' is not a subtype of type 'String' in type cast
E/flutter (29302): #0 UserModelAdapter.read
package:justpoll/model/user_model.g.dart:22
E/flutter (29302): #1 BinaryReaderImpl.read
package:hive/…/binary/binary_reader_impl.dart:326
E/flutter (29302): #2 BinaryReaderImpl.readFrame
package:hive/…/binary/binary_reader_impl.dart:274
E/flutter (29302): #3 FrameHelper.framesFromBytes
package:hive/…/binary/frame_helper.dart:21
E/flutter (29302): #4 FrameIoHelper.framesFromFile
package:hive/…/io/frame_io_helper.dart:42
E/flutter (29302):
Launching lib\main.dart on M2101K6I in debug mode...
package:justpoll/main.dart:1
E/flutter (29302): #5 StorageBackendVm.initialize
package:hive/…/vm/storage_backend_vm.dart:86
E/flutter (29302):
E/flutter (29302): #6 HiveImpl._openBox
package:hive/src/hive_impl.dart:116
E/flutter (29302):
E/flutter (29302): #7 HiveImpl.openBox
package:hive/src/hive_impl.dart:145
E/flutter (29302):
E/flutter (29302): #8 HiveDataHelper.initBox
package:justpoll/utils/hive_helper.dart:44
E/flutter (29302):
E/flutter (29302): #9 HiveDataHelper.init
package:justpoll/utils/hive_helper.dart:27
E/flutter (29302):
E/flutter (29302): #10 main
package:justpoll/main.dart:14
E/flutter (29302):
E/flutter (29302):

Version

• Platform: iOS, Android, Mac, Windows, Linux, Web
• Flutter version: 2.2.3
• Hive version: 2.0.4
• Hive Flutter: 1.1.0
• Hive Generator: 1.1.0
• Build Runner: 2.1.0

[pishguy]

@incrediblezayed problem is on your implementations. please ask in www.stackoverflow.com

[incrediblezayed]

Hello @pishguy, but the same implementation works in my other apps.

[incrediblezayed]

I had to recreate the app.