[Bug]: Error when scanning on Android using withServices

[etx]

Requirements

• I've looked at the README 'Common Problems' section

Have you checked this problem on the example app?

Yes

FlutterBluePlus Version

1.28.10

Flutter Version

3.13.9

What OS?

Android

OS Version

MacOS 14.1.1

Bluetooth Module

Blackmagic Pocket Camera

What is your problem?

Only on Android devices, iOS and MacOS is working as expected.

When I start a scan with a list of services to scan for like this:
FlutterBluePlus.startScan(timeout: const Duration(seconds: 15), withServices: _blackmagicServiceList)

I see this error in the console:
E/flutter (18870): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: type 'Null' is not a subtype of type 'int' E/flutter (18870): #0 new BmScanAdvertisement.fromMap (package:flutter_blue_plus/src/bluetooth_msgs.dart:156:17) E/flutter (18870): #1 new BmScanResponse.fromMap (package:flutter_blue_plus/src/bluetooth_msgs.dart:177:46) E/flutter (18870): #2 FlutterBluePlus.startScan.<anonymous closure> (package:flutter_blue_plus/src/flutter_blue_plus.dart:217:39) E/flutter (18870): #3 _MapStream._handleData (dart:async/stream_pipe.dart:213:31) E/flutter (18870): #4 _ForwardingStreamSubscription._handleData (dart:async/stream_pipe.dart:153:13) E/flutter (18870): #5 _RootZone.runUnaryGuarded (dart:async/zone.dart:1594:10)

It looks like the rssi isn't populated when creating a new BmScanAdvertisement instance?

If I remove the withServices property from the startScan call everything works as I would expect.

Logs

I/flutter (18870): Bluetooth state change: BluetoothAdapterState.on
V/DartMessenger(18870): Received message from Dart over channel 'flutter/platform'
V/DartMessenger(18870): Deferring to registered handler to process message.
V/PlatformChannel(18870): Received 'SystemSound.play' message.
I/flutter (18870): ┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
I/flutter (18870): │ #0   Scan.start (package:pocket_app/core/providers/devicesProvider.dart:43:9)
I/flutter (18870): │ #1   ConnectView.build.<anonymous closure> (package:pocket_app/core/views/connect_view.dart:117:63)
I/flutter (18870): ├┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
I/flutter (18870): │ 💡 DevicesProvider Scan
I/flutter (18870): └───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
V/DartMessenger(18870): Received message from Dart over channel 'flutter_blue_plus/methods'
V/DartMessenger(18870): Deferring to registered handler to process message.
D/[FBP-Android](18870): [FBP] onMethodCall: startScan
D/BluetoothAdapter(18870): isLeEnabled(): ON
D/BluetoothLeScanner(18870): onScannerRegistered() - status=0 scannerId=4 mScannerId=0
I/flutter (18870): ┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
I/flutter (18870): │ #0   Scan.start.<anonymous closure> (package:pocket_app/core/providers/devicesProvider.dart:50:15)
I/flutter (18870): │ #1   <asynchronous suspension>
I/flutter (18870): ├┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
I/flutter (18870): │ 💡 Scan complete
I/flutter (18870): └───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
V/DartMessenger(18870): Sending message with callback over channel 'flutter_blue_plus/methods'
V/DartMessenger(18870): Received message reply from Dart.
E/flutter (18870): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: type 'Null' is not a subtype of type 'int'
E/flutter (18870): #0      new BmScanAdvertisement.fromMap (package:flutter_blue_plus/src/bluetooth_msgs.dart:156:17)
E/flutter (18870): #1      new BmScanResponse.fromMap (package:flutter_blue_plus/src/bluetooth_msgs.dart:177:46)
E/flutter (18870): #2      FlutterBluePlus.startScan.<anonymous closure> (package:flutter_blue_plus/src/flutter_blue_plus.dart:217:39)
E/flutter (18870): #3      _MapStream._handleData (dart:async/stream_pipe.dart:213:31)
E/flutter (18870): #4      _ForwardingStreamSubscription._handleData (dart:async/stream_pipe.dart:153:13)
E/flutter (18870): #5      _RootZone.runUnaryGuarded (dart:async/zone.dart:1594:10)
E/flutter (18870): #6      _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:339:11)
E/flutter (18870): #7      _BufferingStreamSubscription._add (dart:async/stream_impl.dart:271:7)
E/flutter (18870): #8      _ForwardingStreamSubscription._add (dart:async/stream_pipe.dart:123:11)
E/flutter (18870): #9      _MapStream._handleData (dart:async/stream_pipe.dart:218:10)
E/flutter (18870): #10     _ForwardingStreamSubscription._handleData (dart:async/stream_pipe.dart:153:13)
E/flutter (18870): #11     _RootZone.runUnaryGuarded (dart:async/zone.dart:1594:10)
E/flutter (18870): #12     _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:339:11)
E/flutter (18870): #13     _BufferingStreamSubscription._add (dart:async/stream_impl.dart:271:7)
E/flutter (18870): #14     _ForwardingStreamSubscription._add (dart:async/stream_pipe.dart:123:11)
E/flutter (18870): #15     _WhereStream._handleData (dart:async/stream_pipe.dart:195:12)
E/flutter (18870): #16     _ForwardingStreamSubscription._handleData (dart:async/stream_pipe.dart:153:13)
E/flutter (18870): #17     _RootZone.runUnaryGuarded (dart:async/zone.dart:1594:10)
E/flutter (18870): #18     _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:339:11)
E/flutter (18870): #19     _DelayedData.perform (dart:async/stream_impl.dart:515:14)
E/flutter (18870): #20     _PendingEvents.handleNext (dart:async/stream_impl.dart:620:11)
E/flutter (18870): #21     _PendingEvents.schedule.<anonymous closure> (dart:async/stream_impl.dart:591:7)
E/flutter (18870): #22     _microtaskLoop (dart:async/schedule_microtask.dart:40:21)
E/flutter (18870): #23     _startMicrotaskLoop (dart:async/schedule_microtask.dart:49:5)
E/flutter (18870): 
V/DartMessenger(18870): Received message from Dart over channel 'flutter_blue_plus/methods'
V/DartMessenger(18870): Deferring to registered handler to process message.
D/[FBP-Android](18870): [FBP] onMethodCall: stopScan
D/BluetoothAdapter(18870): isLeEnabled(): ON
Application finished.

[chipweinberger]

fixed 1.28.12

[etx]

Wow, thanks! Moved from flutter_blue to flutter_blue_plus today in my app. I must say, Nice work!

[chipweinberger]

love to hear it! how was the migration?

[etx]

love to hear it! how was the migration?

Easy peasy thanks to the docs and deprecation annotations.