I want to design an app which shows a list of wifi networks available and connect to the network when it is selected. I have implemented the part showing the scan results. Now i want to connect to a particular network selected by the user from the list of scan results. Can anyone please tell me how to do this?
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ListView listview = (ListView) findViewById(R.id.listView);
    adapter = new ArrayAdapter
            (this, android.R.layout.simple_list_item_1);
    listview.setAdapter(adapter);
    wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
    wifiReciever = new WiFiScanReceiver();
}
public void onToggleClicked(View view) {
    adapter.clear();
    ToggleButton toggleButton = (ToggleButton) view;
    if (wifiManager == null) {
        // Device does not support Wi-Fi
        Toast.makeText(getApplicationContext(), "Oop! Your device does not support Wi-Fi",
                Toast.LENGTH_SHORT).show();
        toggleButton.setChecked(false);
    } else {
        if (toggleButton.isChecked()) { // To turn on Wi-Fi
            if (!wifiManager.isWifiEnabled()) {
                Toast.makeText(getApplicationContext(), "Wi-Fi is turned on." +
                                "\n" + "Scanning for access points...",
                        Toast.LENGTH_SHORT).show();
                wifiManager.setWifiEnabled(true);
            } else {
                Toast.makeText(getApplicationContext(), "Wi-Fi is already turned on." +
                                "\n" + "Scanning for access points...",
                        Toast.LENGTH_SHORT).show();
            }
            wifiManager.startScan();
        } else { // To turn off Wi-Fi
            Toast.makeText(getApplicationContext(), "Wi-Fi is turned off.",
                    Toast.LENGTH_SHORT).show();
            wifiManager.setWifiEnabled(false);
        }
    }
}
class WiFiScanReceiver extends BroadcastReceiver {
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        //if (intent.getAction().equals(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)) {
        //    wifiScanResult = wifiManager.getScanResults();
        if (WifiManager.SCAN_RESULTS_AVAILABLE_ACTION.equals(action)) {
            List<ScanResult> wifiScanResultList = wifiManager.getScanResults();
            for (int i = 0; i < wifiScanResultList.size(); i++) {
                ScanResult accessPoint = wifiScanResultList.get(i);
                //wifiScanList[i] = wifiScanResultList.get(i).SSID;
                String listItem = " Name: " + accessPoint.SSID +    " \n Mac: " + accessPoint.BSSID + "\n Signal Strenght: " + accessPoint.level+ "dBm";
                adapter.add(listItem);
                // }
                // }
                //listview.setAdapter(new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1, wifiScanList));
            }
        }
    }
}
@Override
protected void onPause() {
    super.onPause();
    unregisterReceiver(wifiReciever);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.wi_fi, menu);
    return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}
}
 
     
     
     
    