Flutter hive: cannot generate Adapter files
1,269
Solution 1
Run this command :
flutter packages pub run build_runner build
But before that, you will have to import the generator.
Example : If your file name is project_database.dart, then in that file :
Import,
import 'package:hive/hive.dart';
part 'project_database.g.dart'; //this will show an error initially but if
// you run the above command, it will generate the generator file
Solution 2
I faced the same issue but I was missing hive_generator: ^1.1.1
. I didn't find it in the original Docs.
Special thanks to @Denny Mueller's comment
Author by
ThommyB
Updated on January 01, 2023Comments
-
ThommyB over 1 year
I have a model like so:
import 'package:uuid/uuid.dart'; import 'package:hive/hive.dart'; part 'config_item.g.dart'; @HiveType() class ConfigItem { @HiveField(0) String _id; // this can be a uuid or a MongoDB ObjectID @HiveField(1) final String deviceName; .... }
I like to generate the Adapter file but it does not want to do it! When I call
flutter packages pub run build_runner build --delete-conflicting-outputs
I get the following output:flutter packages pub run build_runner build --delete-conflicting-outputs main ✭ ✈ [INFO] Generating build script... [INFO] Generating build script completed, took 399ms [SEVERE] Nothing can be built, yet a build was requested. [INFO] Initializing inputs [INFO] Reading cached asset graph... [INFO] Reading cached asset graph completed, took 45ms [INFO] Checking for updates since last build... [INFO] Checking for updates since last build completed, took 399ms [INFO] Running build... [INFO] Running build completed, took 3ms [INFO] Caching finalized dependency graph... [INFO] Caching finalized dependency graph completed, took 35ms [INFO] Succeeded after 53ms with 0 outputs (0 actions)
In my
pubspec.yaml
I have:environment: sdk: ">=2.12.0 <3.0.0" dependencies: flutter: sdk: flutter # The following adds the Cupertino Icons font to your application. # Use with the CupertinoIcons class for iOS style icons. cupertino_icons: ^1.0.2 bottom_navy_bar: ^6.0.0 get_it: ^7.2.0 get_it_mixin: ^3.1.3 servicestack: ^2.0.0 font_awesome_flutter: ^9.1.0 hive: ^2.0.4 hive_flutter: ^1.1.0 path_provider: ^2.0.3 uuid: ^3.0.4 dev_dependencies: flutter_test: sdk: flutter build_runner:
I tried all sort of things like
- Delete .dart_tool folder
- Adding
*.g.dart
to.gitignore
flutter clean
- and a lot more I found when searching the net.
But nothing helps! Any idea what is missing?
I am using the latest (stable) versions of flutter, dart SDK and AndroidStudio.
-
Denny Mueller over 2 yearsI think you are missing
hive_generator: ^1.1.1
in the dev dependencies. -
ThommyB over 2 yearsThat was the solution regarding the
build
. And I had to assign a typeId in the @HiveType annotation like so:@HiveType(typeId : 1)
. Thanks a lot for the hint.