How Can I Enforce Internet Connection Only Through Wifi?

We have a Wifi-connected device. We need to connect to the device via wifi for installation. Once connected, the application sends the request on a ip. This works smoothly before a

Solution 1:

I guess this is related to permissions since API level 27 you need either android.permission.ACCESS_FINE_LOCATION or android.permission.ACCESS_COARSE_LOCATION permission. You need to CHANGE_WIFI_STATE for Android Pie. Try this

ConnectivityManagerconnManager= (ConnectivityManager) activity.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfonetworkInfo= connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        if (networkInfo.isConnected()) {
            WifiManagerwifiManager= (WifiManager) activity.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
            WifiInfowifiInfo= wifiManager.getConnectionInfo();
            wifiInfo.getSSID();
            Stringname= networkInfo.getExtraInfo();
            Stringssid="\"" + wifiInfo.getSSID() + "\"";
}

You can study about these changes in detail. Refer Here