Re: Connect to a wifi network programmatically

I wish to create an application, that detects the available wifi connections in the vicinity, and then connects to them. What I have done till now, is that I created a ListView that lists the available wifi connections, and then I created a LongItemClick dialog box, that shows the SSID and the BSSID of the network, and asks for the password. Now, I wish to connect to one of the networks, independent of what kind of network it is, it might be WEP, WPA or Open too. I am unable to get an overview of how should I connect to them. Can anyone help me with this ? I searched all available answers, and I didn't find any answer, that could help me do this!

I try the above thing by the below method. I create a list view of all the available wi-fi networks in the vicinity, and then I try to show the connection info on long press, and give an option to connect to the clicked wi-fi network via click.

Code:

package com.example.random;



import java.util.ArrayList;
import java.util.HashMap;    
import java.util.Iterator;
import java.util.List;    

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.FragmentManager;
import android.app.ListActivity;
import android.content.BroadcastReceiver;
import android.content.Context;    
import android.content.Intent;     
import android.content.IntentFilter;    
import android.net.wifi.ScanResult;    
import android.net.wifi.WifiConfiguration;   
import android.net.wifi.WifiConfiguration.AuthAlgorithm;
import android.net.wifi.WifiConfiguration.GroupCipher;
import android.net.wifi.WifiConfiguration.KeyMgmt;
import android.net.wifi.WifiConfiguration.PairwiseCipher;
import android.net.wifi.WifiConfiguration.Protocol;
import android.net.wifi.WifiManager;    
import android.os.Bundle;    
import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentActivity;
import android.util.Log;   
import android.view.LayoutInflater;
import android.view.View;    
import android.view.View.OnClickListener;    
import android.view.ViewGroup;
import android.widget.AdapterView;    
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Button;    
import android.widget.EditText;
import android.widget.ListView;    
import android.widget.SimpleAdapter;    
import android.widget.TextView;    
import android.widget.Toast;

public class MainActivity extends FragmentActivity implements OnClickListener
 {      
    WifiManager wifi;       
    ListView lv;
//    TextView textStatus;
    Button buttonScan;
    int size = 0;
    List<ScanResult> results;
    final Context context = this;
    EditText pass;
    String checkPassword = null;

    String ITEM_KEY = "key";
    ArrayList<HashMap<String, String>> arraylist = new ArrayList<HashMap<String, String>>();
    SimpleAdapter adapter;

    /* Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

//        textStatus = (TextView) findViewById(R.id.textStatus);
        buttonScan = (Button) findViewById(R.id.buttonScan);
        buttonScan.setOnClickListener(this);
        lv = (ListView)findViewById(R.id.list);
        lv.setOnItemClickListener(new OnItemClickListener(){

            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                    long arg3) {
                // TODO Auto-generated method stub
                connectToWifi(arg2);
            }



                private void connectToWifi(final int position)
                        {
                    final Dialog dialog = new Dialog(context);
                    dialog.setContentView(R.layout.connect);
                    dialog.setTitle("Connect to Network");
                    TextView textSSID = (TextView) dialog.findViewById(R.id.textSSID);
                    TextView textBSSID = (TextView) dialog.findViewById(R.id.textBSSID);
                    TextView capabilities = (TextView) dialog.findViewById(R.id.textCapabilities);

                    Button dialogButton = (Button) dialog.findViewById(R.id.dialogButtonOK);
                    pass = (EditText) dialog.findViewById(R.id.textPassword);
                    textSSID.setText(results.get(position).SSID);
                    textBSSID.setText(results.get(position).BSSID);
                    capabilities.setText(results.get(position).capabilities);
//                                      
                    // if button is clicked, connect to the network;
                    dialogButton.setOnClickListener(new OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            checkPassword = pass.getText().toString();
                            finallyConnect(checkPassword);
                            dialog.dismiss();
                        }

                        private void finallyConnect(String checkPassword) {
                            String networkSSID = results.get(position).SSID;
                            String networkPass = checkPassword;

                            WifiConfiguration wifiConfig = new WifiConfiguration();
                            wifiConfig.SSID = String.format("\"%s\"", networkSSID);
                            wifiConfig.preSharedKey = String.format("\"%s\"", networkPass);

                            WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
                            //remember id
                            int netId = wifiManager.addNetwork(wifiConfig);
                            wifiManager.disconnect();
                            wifiManager.enableNetwork(netId, true);
                            wifiManager.reconnect();



                            WifiConfiguration conf = new WifiConfiguration();
                            conf.SSID = "\"\"" + networkSSID + "\"\"";
                            conf.preSharedKey = "\""+ networkPass +"\"";
                            WifiManager wifiManager1 = (WifiManager)context.getSystemService(Context.WIFI_SERVICE); 
                            wifiManager1.addNetwork(conf);

//                          List<WifiConfiguration> list = wifiManager1.getConfiguredNetworks();
//                          for( WifiConfiguration i : list ) {
//                              if(i.SSID != null && i.SSID.equals("\"" + networkSSID + "\"")) {
//                                   wifiManager1.disconnect();
//                                   
//                                  wifiManager1.enableNetwork(i.networkId, true);
//                                  if(wifiManager1.reconnect()){
////                                    int ipAddress = wifiManager.getConnectionInfo().getIpAddress();
////                                    Toast.makeText(getApplicationContext(), ipAddress, Toast.LENGTH_SHORT).show();
//                                  Toast.makeText(getApplicationContext(), networkSSID + " "+ "Connection successful", Toast.LENGTH_SHORT).show();                              
//                                  }
//                                  else{
//                                  Toast.makeText(getApplicationContext(), "Connection Failed", Toast.LENGTH_SHORT).show();
//                                  }
//                                  
//                                   break;
//                                         
//                              }
//                          }

                        }
                    });
                    dialog.show();
                }
       });

        lv.setOnItemLongClickListener(new OnItemLongClickListener(){

            @Override
            public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
                    int arg2, long arg3) {
                // TODO Auto-generated method stub
                showWifiSettings(arg2);
                return true;
            }

            private void showWifiSettings(int arg2) {
                showDialogOfOptions(arg2);
                    }

            private void showDialogOfOptions(int arg2) {
                // Create a custom Dialog
                final Dialog dialog = new Dialog(context);
                dialog.setContentView(R.layout.custom);
                dialog.setTitle("Network details");
                TextView textSSID = (TextView) dialog.findViewById(R.id.textSSID);
                TextView textBSSID = (TextView) dialog.findViewById(R.id.textBSSID);
                Button dialogButton = (Button) dialog.findViewById(R.id.dialogButtonOK);
                textSSID.setText(results.get(arg2).SSID);
                textBSSID.setText(results.get(arg2).BSSID);
                // if button is clicked, close the custom dialog
                dialogButton.setOnClickListener(new OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        dialog.dismiss();
                    }
                });

                dialog.show();
              }
            });

        wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
        if (wifi.isWifiEnabled() == false)
        {
            Toast.makeText(getApplicationContext(), "wifi is disabled..making it enabled", Toast.LENGTH_LONG).show();
            wifi.setWifiEnabled(true);
        }   

        this.adapter = new SimpleAdapter(MainActivity.this, arraylist, R.layout.row, new String[] { ITEM_KEY }, new int[] { R.id.list_value });
        lv.setAdapter(this.adapter);

        registerReceiver(new BroadcastReceiver()
        {
            @Override
            public void onReceive(Context c, Intent intent) 
            {
               results = wifi.getScanResults();
               size = results.size();
            }
        }, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));                    
    }

//    protected void connectionStatus(String password) {
//      // TODO Auto-generated method stub
//      
//      
//  }

    public void onClick(View view) 
    {


        arraylist.clear();          
        wifi.startScan();

        Toast.makeText(this, "Scanning...." + size, Toast.LENGTH_SHORT).show();
        try 
        {
            size = size - 1;
            while (size >= 0) 
            {   
                HashMap<String, String> item = new HashMap<String, String>();
                item.put(ITEM_KEY, results.get(size).SSID.toString()+ results.get(size).capabilities.toString());

                arraylist.add(item);
                size--;
                adapter.notifyDataSetChanged();                 
            }


           }
        catch (Exception e)
        { }         
    }    
}

The application is running fine, but it does not connect to any of the Wifi networks. Any help please ?