[Bug]: iOS 17.1.1 | manufacturereData is empty in ScanResult.advertisementData.manufacturerData

[DavorStajcer]

Requirements

• [X] I've looked at the README 'Common Problems' section

Have you checked this problem on the example app?

No

FlutterBluePlus Version

1.29.4

Flutter Version

3.16.0

What OS?

iOS

OS Version

17.1.1

Bluetooth Module

Not sure

What is your problem?

I have an IOT product. When scanning, the product is found. From the ScanResult object I take ScanResult.advertisementData.manufacturerData[2775] to decode information about the product article and serial number. This key is not present in the manufacturerData (map is empty)

Things to consider:

• Works on Android
• Works on lower iOS versions
• Works with version 1.5.2 if await FlutterBluePlus.stopScan() is added

Code:

Logs

There is no logs

[seymooreth3myth]

The same is happening here.

[seymooreth3myth]

@DavorStajcer here using the example flutter_blue_plus the manufactureData isn't empty. The reason? I don't know.

[seymooreth3myth]

@DavorStajcer Here works with:

await FlutterBluePlus.startScan(
      timeout: const Duration(seconds: 6),
      continuousUpdates: true,
      continuousDivisor: 1,
    );

I have recently noticed that following an update, the functionality to access manufacturerData on iOS has been impacted unless the continuousUpdates and continuousDivisor parameters are specified. Prior to this change, these parameters were not required to retrieve this data.

While I understand that updates and improvements are essential to the development of any library, changes that affect existing functionality can cause significant inconvenience for developers relying on your library. It would be helpful if such changes were clearly documented, and if possible, provide a smoother transition or alternatives to maintain compatibility with previous implementations.

FlutterBluePlus Team, thank you for your continued work in improving the library, and I hope you will consider this feedback for future updates.

[chipweinberger]

you should not need continuousUpdates and continuousDivisor

the only reason you might need those is if your ble device advertises nothing and but then later changes the advertisement data.

that said, there's a change i should make so you should only have to set a withMsd scan filter.

Works on lower iOS versions

this suggests it is a bug in ios.

please provide logs. verbose logs.

also, all breaking changes are listed in MIGRATION.md

[seymooreth3myth]

flutter: [FBP] \^[[1;30m<setLogLevel>\^[[0m args: \^[[1;35<…>
flutter: [FBP] \^[[1;30m<setLogLevel>\^[[0m result: \^[[1;33mtr<…>
flutter: [FBP] \^[[1;30m<getAdapterState>\^[[0m args: \^[[1;35mnu<…>
flutter: [FBP] \^[[1;30m[[ OnAdapterStateChanged ]]\^[[0m result: \^[[1;33m{adapter_state: <…>
flutter: [FBP] \^[[1;30m<getAdapterState>\^[[0m result: \^[[1;33m{adapter_state: <…>
flutter: [FBP] \^[[1;30m<getSystemDevices>\^[[0m args: \^[[1;35mnu<…>
flutter: [FBP] \^[[1;30m<getSystemDevices>\^[[0m result: \^[[1;33m{devices: [<…>
flutter: [FBP] \^[[1;30m<startScan>\^[[0m args: \^[[1;35m{with_services: [], with_remote_ids: [], with_names: [], with_keywords: [], with_msd: [], with_service_data: [], continuous_updates: false, continuous_divisor: 4, android_scan_mode: 2, android_uses_fine_location: fals<…>
flutter: [FBP] \^[[1;30m<startScan>\^[[0m result: \^[[1;33mtr<…>
flutter: [FBP] \^[[1;30m[[ OnScanResponse ]]\^[[0m result: \^[[1;33m{advertisements: [{rssi: -95, remote_id: 1ED30DF4-FB03-3395-B181-FBC8830F950D, manufacturer_data: {6: 010f2022a854462240f8a377ced2732c86b0f6f5af4ad5aebc1156}}<…>
flutter: [FBP] \^[[1;30m[[ OnScanResponse ]]\^[[0m result: \^[[1;33m{advertisements: [{rssi: -40, remote_id: 9F63C197-36D3-3D47-12F1-EB471C121E54}<…>
flutter: [FBP] \^[[1;30m[[ OnScanResponse ]]\^[[0m result: \^[[1;33m{advertisements: [{remote_id: 7B41903C-582C-65F1-6C0A-EF663C68CC66, platform_name: 287-2B, service_uuids: [6e400001-b5a3-f393-e0a9-e50e24dcca3e], connectable: 1, rssi: -75, adv_name: 287-2B}<…>
flutter: [FBP] \^[[1;30m[[ OnScanResponse ]]\^[[0m result: \^[[1;33m{advertisements: [{remote_id: AC04D4FE-E134-2A2F-A590-3CF0FFADE603, platform_name: F1 WATCH, rssi: -61, connectable: 1, adv_name: F1 WATCH}<…>
flutter: [FBP] \^[[1;30m[[ OnScanResponse ]]\^[[0m result: \^[[1;33m{advertisements: [{remote_id: 465FA1C5-C625-03BD-0F19-1C1BF3F9C321, rssi: -41, connectable: 1, tx_power_level: 12}<…>
flutter: [FBP] \^[[1;30m[[ OnScanResponse ]]\^[[0m result: \^[[1;33m{advertisements: [{remote_id: 3239DA7B-B689-261C-B137-D17FBA9B146A, platform_name: Mac Pro de Fábio, rssi: -41, connectable: 1, tx_power_level: 12}<…>
flutter: [FBP] \^[[1;30m[[ OnScanResponse ]]\^[[0m result: \^[[1;33m{advertisements: [{remote_id: 001C5E4B-FC9C-A45D-4519-29F7F5907709, platform_name: F1 WATCH, rssi: -53, connectable: 1, adv_name: F1 WATCH}<…>
flutter: [FBP] \^[[1;30m[[ OnScanResponse ]]\^[[0m result: \^[[1;33m{advertisements: [{remote_id: 148371E1-0ED5-7E6C-6EF6-44243BC30418, rssi: -95, connectable: 1, tx_power_level: 6}<…>
flutter: [FBP] \^[[1;30m[[ OnScanResponse ]]\^[[0m result: \^[[1;33m{advertisements: [{remote_id: B81B8BC5-4E98-A52F-81D8-64002CEFD4E8, rssi: -92, connectable: 1, tx_power_level: 12}<…>
flutter: [FBP] \^[[1;30m[[ OnScanResponse ]]\^[[0m result: \^[[1;33m{advertisements: [{rssi: -43, remote_id: A1EAD4C2-41FF-1673-07F5-503CC697065C}<…>
flutter: [FBP] \^[[1;30m<stopScan>\^[[0m args: \^[[1;35mnu<…>
flutter: [FBP] \^[[1;30m<stopScan>\^[[0m result: \^[[1;33mtr<…>

like this?

[chipweinberger]

try 1.29.6

[seymooreth3myth]

Working perfectly now without passing arguments. Good job. Thank you!

[DavorStajcer]

@chipweinberger Thanks!