Flutter Google Place Search not working after upgrading to Flutter Version 2

[basheerbsr79]

[ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 900): #0 PlacesAutocompleteState.doSearch (package:flutter_google_places/src/flutter_google_places.dart:436)
E/flutter ( 900): #1 _rootRunUnary (dart:async/zone.dart:1362)
E/flutter ( 900): #2 _CustomZone.runUnary (dart:async/zone.dart:1265)
E/flutter ( 900): #3 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170)
E/flutter ( 900): #4 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:341)
E/flutter ( 900): #5 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:271)
E/flutter ( 900): #6 _SyncBroadcastStreamController._sendData (dart:async/broadcast_stream_controller.dart:378)
E/flutter ( 900): #7 _BroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:244)
E/flutter ( 900): #8 _StartWithStreamSink.add (package:rxdart/src/transformers/start_with.dart:15)
E/flutter ( 900): #9 forwardStream... (package:rxdart/src/utils/forwarding_stream.dart:31)
E/flutter ( 900): #10 forwardStream.runCatching (package:rxdart/src/utils/forwarding_stream.dart:21)
E/flutter ( 900): #11 forwardStream.. (package:rxdart/src/utils/forwarding_stream.dart:31)
E/flutter ( 900): #12 _rootRunUnary (dart:async/zone.dart:1362)
E/flutter ( 900): #13 _CustomZone.runUnary (dart:async/zone.dart:1265)
E/flutter ( 900): #14 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170)
E/flutter ( 900): #15 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:341)
E/flutter ( 900): #16 _DelayedData.perform (dart:async/stream_impl.dart:591)
E/flutter ( 900): #17 _StreamImplEvents.handleNext (dart:async/stream_impl.dart:706)
E/flutter ( 900): #18 _PendingEvents.schedule. (dart:async/stream_impl.dart:663)
E/flutter ( 900): #19 _rootRun (dart:async/zone.dart:1346)
E/flutter ( 900): #20 _CustomZone.run (dart:async/zone.dart:1258)
E/flutter ( 900): #21 _CustomZone.runGuarded (dart:async/zone.dart:1162)
E/flutter ( 900): #22 _CustomZone.bindCallbackGuarded. (dart:async/zone.dart:1202)
E/flutter ( 900): #23 _rootRun (dart:async/zone.dart:1354)
E/flutter ( 900): #24 _CustomZone.run (dart:async/zone.dart:1258)
E/flutter ( 900): #25 _CustomZone.runGuarded (dart:async/zone.dart:1162)
E/flutter ( 900): #26 _CustomZone.bindCallbackGuarded. (dart:async/zone.dart:1202)
E/flutter ( 900): #27 _microtaskLoop (dart:async/schedule_microtask.dart:40)
E/flutter ( 900): #28 _startMicrotaskLoop (dart:async/schedule_microtask.dart:49)

[adam-weissert]

This same issue was occurring for me as well after upgrading the package to v0.3.0, its dependencies, and Flutter to the current stable channel.

Judging by the first error, it looks like the null safety on types, components, and strictbounds is causing this.

Here's a fix I included in my PlacesAutocomplete.show() function:

Prediction p = await PlacesAutocomplete.show(
          context: context,
          apiKey: kGoogleApiKey,
          mode: Mode.overlay,
          types: [],
          language: "en",
          components: [Component(Component.country, "us")],
          strictbounds: false,
        );

Take a look at the Google Maps docs for this function as well

[KevMorelli]

@adam-weissert thank you for your hotfix, I already fix this and some other properties having similar issues, I will release another version this weekend so I have a little more time to fix other issues

[Adrek]

The new version will depend on rxdart ^ 0.27.0?

I updated to the latest versions of the FlutterFire and GeoFlutterFire packages so they don't conflict. But I get this error:

Running "flutter pub get" in ubercloneflutter...                
Because no versions of geoflutterfire match >3.0.0-nullsafety.4 <4.0.0 and geoflutterfire 3.0.0-nullsafety.4 depends on rxdart ^0.27.0, geoflutterfire ^3.0.0-nullsafety.4 requires rxdart ^0.27.0.

And because flutter_google_places >=0.3.0 depends on rxdart ^0.26.0, geoflutterfire ^3.0.0-nullsafety.4 is incompatible with flutter_google_places >=0.3.0.

So, because ubercloneflutter depends on both flutter_google_places ^0.3.0 and geoflutterfire ^3.0.0-nullsafety.4, version solving failed.
pub get failed (1; So, because ubercloneflutter depends on both flutter_google_places ^0.3.0 and geoflutterfire ^3.0.0-nullsafety.4, version solving failed.)
exit code 1

[scortumee]

@Adrek you can do a temporary workaround for the problem you are having like below

dependencies: 
  ...
  rxdart: ^0.27.0
dependency_overrides:
  rxdart: ^0.26.0

in your pubspec.yaml file

[juliansteenbakker]

This issue will be tracked in #164, expect an update soon.