Android 6.0 Cannot add WifiConfiguration if there is already another WifiConfiguration for that SSID

Question

Android 6.0 made some changes to the WiFi behavior and it breaks my app behavior and cannot find a solution for it.

Basically, for Android 6.0 you are not permitted

Answer 1

Yes. It is an Android 6.0. bug and it seems it will be fixed in a new version.

https://code.google.com/p/android/issues/detail?id=192622

Answer 2

I think it helps....A few changes needed... WifiConfiguration objects that are not created by your app for every time. The app doesnt have permission to create another object...So we need connected with previous existing netID.

public void connectToWifi(){
    try{
        WifiManager wifiManager = (WifiManager) super.getSystemService(android.content.Context.WIFI_SERVICE);
        WifiConfiguration wc = new WifiConfiguration();
        WifiInfo wifiInfo = wifiManager.getConnectionInfo();
        wc.SSID = "\"NETWORK_NAME\"";
        wc.preSharedKey = "\"PASSWORD\"";
        wc.status = WifiConfiguration.Status.ENABLED;
        wc.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
        wc.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
        wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
        wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
        wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
        wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
        wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
        wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
        wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
        wifiManager.setWifiEnabled(true);
        int netId = wifiManager.addNetwork(wc);
        if (netId == -1) {
            netId = getExistingNetworkId(SSID);
        }
        wifiManager.disconnect();
        wifiManager.enableNetwork(netId, true);
        wifiManager.reconnect();
    } catch (Exception e) {
        e.printStackTrace();
    }
}
private int getExistingNetworkId(String SSID) {
    WifiManager wifiManager = (WifiManager) super.getSystemService(Context.WIFI_SERVICE);
    List<WifiConfiguration> configuredNetworks = wifiManager.getConfiguredNetworks();
    if (configuredNetworks != null) {
        for (WifiConfiguration existingConfig : configuredNetworks) {
            if (existingConfig.SSID.equals(SSID)) {
                return existingConfig.networkId;
            }
        }
    }
    return -1;
}

And add permissions in Manifest file also...