Can not run Wifi and Bluetooth scans in background with Flutter

Question

I am working on a part of an indoor localization project. I need my Flutter application scan and get Mac addresses and RSSI values of Wifi and Bluetooth devices. I am using flutter_blue for bluetooth scans and wifi_scan for Wifi scans. The application works well while in the foreground but scans are failing when the application is in background.

What I have tried so far:

• Tried to change Bluetooth scan mode from ScanMode.lowLatency to ScanMode.lowPower and ScanMode.opportunistic for the startScan() method for flutter_blue.
• flutter_background. I managed to do some tasks in background but wifi and bluetooth did not work.
• flutter_background_service the same situation
• flutter_foreground_plugin the same situation
• flutter_foreground_task the same situation
• workmanager did not try it because it says it can trigger the bg operation per every 15 minutes but I am scanning per every 6 seconds.

Is there any way to achieve this? Aren't there any package with the option backgroundMode: true? I don't know the natives. Don't know Kotlin too.

Answer 1

After a lot of things have been tried, I just tried to get GPS location too.

Used this package: location

And execute location.enableBackgroundMode(enable: true) as it is stated in readme, then my wifi and bluetooth scans starts working in background too.

It's Ridicoulus