[SOLVED] wifiManager doesn't update unless I check WiFi List manually from settings

wifiManager doesn't update unless I check WiFi List manually from settings

I use wifiManager in Kotlin to get wifi network list with

wifiManager = applicationContext.getSystemService(Context.WIFI_SERVICE) as WifiManager

wifiManager!!.scanResults

But the list doesn't get updated when I invoke wifiManager!!.scanResults(I call it every second).

For example let's say I create a new network called net1 but It doesn't see net1 directly

It updates only when I visit WiFi Settings manually net1 shows up there at the settings, and the list updates. Finally wifiManager starts to see net1

How can I invoke what the phone does when I visit WiFi Settings/solve this problem?

Solution

So apparently android throttles scanning WiFi for foreground apps.

You can scan only 4 times in 2 minutes, and because I scan every second it just updates for 4 seconds every 2 minutes.

But if I visit WiFi settings device manually scans and the last scan results are displayed in wifiManager!!.scanResults if scan is failed/not completed.

I solved this disabling Developer options -> Networking -> Wi-Fi scan throttling