androidkotlinandroid-wifiwifimanager

Problem with geting wifiInfo while app is in background

I am geting wifiInfo like that:

val wifiManager = applicationContext.getSystemService(Context.WIFI_SERVICE) as WifiManager
val wifiInfo = wifiManager.connectionInfo
Log.d("###", wifiInfo.ssid.toString())

But when app is in background wifiInfo always return <unknown ssid>. How can i get it?

EDIT:

In MainActivity I starting coroutine that prints connected wifi SSID every second:

job = MainScope().launch {
    while(true) {
        val wifiManager = applicationContext.getSystemService(Context.WIFI_SERVICE) as WifiManager
        val wifiInfo = wifiManager.connectionInfo
        Log.d("###", "SSID: ${wifiInfo.ssid.toString()}")
        delay(1000)
    }
}

Screenshot from Logcat: enter image description here

Can see, that SSID stops printing properly after any seconds in background.

Solution

  • @AlexVs86 I tried your provided code.

    Solution: After API 29 ACCESS_COARSE_LOCATION or ACCESS_FINE_LOCATION permissions is not enough in manifest, you have to add ACCESS_BACKGROUND_LOCATION for background location access.

    Here, I tried permission:

    <uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION"/>

    OutPut: After granting permission to Allow all the time it provides the information in background as well.

    D/###: SSID: <unknown ssid>
D/###: SSID: <unknown ssid>
D/###: SSID: <unknown ssid>
D/###: SSID: <unknown ssid>
D/###: SSID: <unknown ssid>
D/###: SSID: <unknown ssid>
D/###: SSID: <unknown ssid>
D/###: SSID: "Home1_EXT"
D/###: SSID: "Home1_EXT"
D/###: SSID: "Home1_EXT"
D/###: SSID: "Home1_EXT"
D/###: SSID: "Home1_EXT"
D/###: SSID: "Home1_EXT"
D/###: SSID: "Home1_EXT"
D/###: SSID: "Home1_EXT"
D/###: SSID: "Home1_EXT"