SharedPreferences error in Flutter

I was using shared_preferences plugin in my Flutter application. From one moment (probably after Flutter upgrade), it started to throw an exception:

E/flutter (27778): [ERROR:topaz/lib/tonic/logging/dart_error.cc(16)] Unhandled exception:
E/flutter (27778): type '_InternalLinkedHashMap' is not a subtype of type 'Map<String, Object>' where
E/flutter (27778): _InternalLinkedHashMap is from dart:collection
E/flutter (27778): Map is from dart:core
E/flutter (27778): String is from dart:core
E/flutter (27778): Object is from dart:core
E/flutter (27778):
E/flutter (27778): #0 SharedPreferences.getInstance (package:shared_preferences/shared_preferences.dart)
E/flutter (27778): <asynchronous suspension>
E/flutter (27778): #1 loadFirstUse (**path**/lib/main.dart:29:53)
E/flutter (27778): <asynchronous suspension>
E/flutter (27778): #2 main (**path**/lib/main.dart:17:9)
E/flutter (27778): <asynchronous suspension>
E/flutter (27778): #3 _startIsolate.<anonymous closure> (dart:isolate/runtime/libisolate_patch.dart:279:19)
E/flutter (27778): #4 _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:165:12)


It happens when I simple try to create instance of SharedPreferences:

SharedPreferences prefs = await SharedPreferences.getInstance();


I was trying to find root of the problem, but was unable to find it. Thank you for any help.

EDIT: I am using shared_preferences: "^0.4.0"

I've tried shared_preferences: "0.2.4" and other versions suggested above without any success. Finally got it to work after changing flutter channel from dev to beta:

flutter channel beta


At least this fixes this problem for now and just wait for a fix for the shared_preferences plugin on the dev channel.

This still appears to be an issue. Seemingly appeared out of nowhere. I fixed it by changing to shared_preferences: "0.3.3". There is a good chance this breaks again.

Good luck.

you need to use Future like this

Future<SharedPreferences> _sprefs = SharedPreferences.getInstance();


I faced the same issue guys. I solved this using the following workaround:

Future<SharedPreferences> prefs = SharedPreferences.getInstance();
prefs.then(
(pref)
{
//call functions like pref.getInt(), etc. here
}
);