Question

Can some body help me to solve this issue?

Here is my code, and at mWifi.enableNetwork(netID, true) it’s cannot enable network and cannot auto connect to specified network. So I want to know where I had made a mistake?

    public class WifiConnActivity extends Activity {
    /** Called when the activity is first created. */
    final String tag = "WifiConn:...";
    EditText txt;
    WifiManager mWifi;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        mWifi = (WifiManager)getSystemService(Context.WIFI_SERVICE);

        txt = (EditText)findViewById(R.id.editText1);

        Button b1 = (Button)findViewById(R.id.B1);        
        b1.setOnClickListener(new OnClickListener(){
            @Override
            public void onClick(View v)
            {

                if (mWifi.startScan())  //scan now
                {
                    Log.d(tag, "startScan()");

                    List<ScanResult> sRet = mWifi.getScanResults();  //scan results.

                    for (int i=0; i<sRet.size(); i++)
                    {
                        ScanResult retS = sRet.get(i); 
                        txt.append("resT: " + retS.SSID +" " + retS.BSSID + "\n");
                        Log.d(tag, "resT: " + retS.SSID +" " + retS.BSSID);

                        if (retS.SSID.equalsIgnoreCase("TEST"))
                        {
                            txt.append("Found: " + retS.SSID +" " + retS.BSSID + "\n");

                            WifiConfiguration wc = new WifiConfiguration();

                            wc.SSID = "\""+retS.SSID+"\"";
                            wc.BSSID = retS.BSSID;
                            wc.status = WifiConfiguration.Status.ENABLED;
                            wc.hiddenSSID = true;

                            int netID = mWifi.addNetwork(wc); // add network
                            txt.append("addNetwork: "+ Integer.toString(netID) +"\n");

                            if(mWifi.enableNetwork(netID, true)) // enable network, but cannot work???????????
                            {
                                txt.append("enableNetwork: true\n");
                            }
                        }
                    }

                }
            }

        });      
    }
}

Answer 1

I think you need to add a WifiConfiguration.KeyMgmt to your WifiConfiguration object. Assuming it’s an open network:

wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);

Also, be cautious in assuming that scan results are available immediately upon exit of your call to startScan(). The best bet in this case is to add a BroadcastReceiver on WifiManager.SCAN_RESULTS_AVAILABLE_ACTION and add to it all of your code from mWifi.getScanResults() forward. You will need to add a call to mWifi.reconnect() once you get enableNetwork() to succeed.

As for initializing your WifiConfiguration wc, I’d love it if you’d consider my post here. Finally, another good answer is here.