startScan() in WifiManager deprecated in Android P

Question

How to get scan result from wifi for example every 3 seconds, without mWifimanager.startScan();

Google says :

startScan() This method was

Answer 1

It appears Googles intention might be to force developers to use WifiRttManager instead for indoor location atleast [1]. Or rely on usual Google Play location services, which is an option in some use cases, but definitely not all. It's optimised for the average use case. No use case is the average use case.

Unfortunately with the way WifiRttManager calculates location it requires the wifi accesspoints to have 802.11mc. However you don't need to connect to these points. Virtually 0 routers today have this standard. [2] [3] [4] With 3 access points you can get location close to 1-2m accuracy.

Who knows if they'll place restrictions on this functionality as well though. There is simply no excuse for taking this choice away from users and developers. Disgusting.

So it appears there will atleast be a dark age for indoor location. Perhaps a workaround is to have devices you are connected to and ping them.

[1] https://developer.android.com/reference/android/net/wifi/rtt/WifiRttManager

[2] https://github.com/Plinzen/android-rttmanager-sample

Additional reading

[3] https://en.wikipedia.org/wiki/IEEE_802.11mc

[4] https://fit-iot.com/web/wifi-indoor-positioning/