Two instances of the same network when searching wifi network

Question

I am trying to connect to a device via wifi

final WifiNetworkSpecifier wifiNetworkSpecifier = new WifiNetworkSpecifier.Builder()
                .setSsidPattern(new PatternMatcher(networkSSIDPattern, PatternMatcher.PATTERN_PREFIX))
                .setWpa2Passphrase(passWord)
                .build();


final NetworkRequest networkRequest = new NetworkRequest.Builder()
                .addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
                .removeCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
                .setNetworkSpecifier(wifiNetworkSpecifier)
                .build();


connectivityManager = (ConnectivityManager) RainBird.getContext().getApplicationContext().getSystemService(CONNECTIVITY_SERVICE);

connectivityManager.requestNetwork(networkRequest, networkCallback);

I am getting a dialog with the good device network, after connecting, the same network appears two times in the dialog.

how can I fix it?

First connection view:

after one connection, the same network appears 2 times:

The problem only occurs on android12

Seems like your networkSSIDPattern is matching two networks? Is it possible you are showing both bands of a dual-band Wi-Fi network? — Always Learning, Jun 30 '22 at 01:33

score 1 · Answer 1 · answered Jul 04 '22 at 17:35

I believe that Mike's answer might help you:

This is the proper way to register for connectivity changes on API 21 and higher. The following code can be placed in a base activity and that way you can expect every screen in your app (that inherits from this activity) to get these callbacks.

First, create a network callback which will monitor connectivity changes.

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private val networkCallback: ConnectivityManager.NetworkCallback = object : ConnectivityManager.NetworkCallback() {

    override fun onAvailable(network: Network?) {
        super.onAvailable(network)
    }

    override fun onLost(network: Network?) {
        super.onLost(network)
    }
}

Then, register and unregister this callback in the relevant spots.

override fun onResume() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        val cm = getSystemService(Context.CONNECTIVITY_SERVICE) as? ConnectivityManager
        cm?.registerNetworkCallback(NetworkRequest.Builder().build(), networkCallback)
    }
}

override fun onPause() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        val cm = getSystemService(Context.CONNECTIVITY_SERVICE) as? ConnectivityManager
        cm?.unregisterNetworkCallback(networkCallback)
    }
}

this didn't fix the problem, I still see 2 networks – haythem souissi Jul 05 '22 at 18:42 — haythem souissi, Jul 05 '22 at 18:42

haythem souissi · Answer 2 · 2022-07-07T21:54:04.630

1

Finally, I found the solution I just changed compileSdkVersion from 30 to 31

ConnectivityManager in android 12 (version 31) contain the fix

thank you every one

Actually this did fix the problem for my pixel 6 I still can reproduce the problem on samsung S22...

edited Jul 07 '22 at 21:54

answered Jul 05 '22 at 21:06

haythem souissi

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score 1 · Answer 3 · answered Jul 08 '22 at 06:30

On Android 12 WifiNetworkSpecifier API is only for peer-to-peer local-only network which means it must NOT have NetworkCapabilities.NET_CAPABILITY_INTERNET. For more information please check this link. If you are looking for an internet connection, please use WifiNetworkSuggestion API.

Two instances of the same network when searching wifi network

3 Answers3